def main():
print("Starting tests for wotan...")
numpy.testing.assert_almost_equal(t14(R_s=1, M_s=1, P=365),
0.6490025258902046)
numpy.testing.assert_almost_equal(
t14(R_s=1, M_s=1, P=365, small_planet=True), 0.5403690143737738)
print("Transit duration correct.")
numpy.random.seed(seed=0) # reproducibility
print("Slide clipper...")
points = 1000
time = numpy.linspace(0, 30, points)
flux = 1 + numpy.sin(time) / points
noise = numpy.random.normal(0, 0.0001, points)
flux += noise
for i in range(points):
if i % 75 == 0:
flux[i:i + 5] -= 0.0004 # Add some transits
flux[i + 50:i + 52] += 0.0002 # and flares
clipped = slide_clip(time,
flux,
window_length=0.5,
low=3,
high=2,
method='mad',
center='median')
numpy.testing.assert_almost_equal(numpy.nansum(clipped), 948.9926368754939)
"""
import matplotlib.pyplot as plt
plt.scatter(time, flux, s=3, color='black')
plt.scatter(time, clipped, s=3, color='orange')
plt.show()
"""
# TESS test
print('Loading TESS data from archive.stsci.edu...')
path = 'https://archive.stsci.edu/hlsps/tess-data-alerts/'
filename = "hlsp_tess-data-alerts_tess_phot_00062483237-s01_tess_v1_lc.fits"
#path = 'P:/P/Dok/tess_alarm/'
#filename = "hlsp_tess-data-alerts_tess_phot_00062483237-s01_tess_v1_lc.fits"
#filename = 'P:/P/Dok/tess_alarm/hlsp_tess-data-alerts_tess_phot_00077031414-s02_tess_v1_lc.fits'
#filename = 'tess2018206045859-s0001-0000000201248411-111-s_llc.fits'
time, flux = load_file(path + filename)
window_length = 0.5
print("Detrending 1 (biweight)...")
flatten_lc, trend_lc = flatten(time,
flux,
window_length,
edge_cutoff=1,
break_tolerance=0.1,
return_trend=True,
cval=5.0)
numpy.testing.assert_equal(len(trend_lc), 20076)
numpy.testing.assert_almost_equal(numpy.nanmax(trend_lc),
28754.985299070882)
numpy.testing.assert_almost_equal(numpy.nanmin(trend_lc),
28615.108124724477)
numpy.testing.assert_almost_equal(trend_lc[500], 28671.686308143515)
numpy.testing.assert_equal(len(flatten_lc), 20076)
numpy.testing.assert_almost_equal(numpy.nanmax(flatten_lc),
1.0034653549250616)
numpy.testing.assert_almost_equal(numpy.nanmin(flatten_lc),
0.996726610702177)
numpy.testing.assert_almost_equal(flatten_lc[500], 1.000577429565131)
print("Detrending 2 (andrewsinewave)...")
flatten_lc, trend_lc = flatten(time,
flux,
window_length,
method='andrewsinewave',
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
18119.15471987987,
decimal=2)
print("Detrending 3 (welsch)...")
flatten_lc, trend_lc = flatten(time,
flux,
window_length,
method='welsch',
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
18119.16764691235,
decimal=2)
print("Detrending 4 (hodges)...")
flatten_lc, trend_lc = flatten(time[:1000],
flux[:1000],
window_length,
method='hodges',
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
994.0110525909206,
decimal=2)
print("Detrending 5 (median)...")
flatten_lc, trend_lc = flatten(time,
flux,
window_length,
method='median',
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
18119.122065014355,
decimal=2)
print("Detrending 6 (mean)...")
flatten_lc, trend_lc = flatten(time,
flux,
window_length,
method='mean',
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
18119.032473037714,
decimal=2)
print("Detrending 7 (trim_mean)...")
flatten_lc, trend_lc = flatten(time,
flux,
window_length,
method='trim_mean',
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
18119.095164910334,
decimal=2)
print("Detrending 8 (supersmoother)...")
flatten_lc, trend_lc = flatten(time,
flux,
window_length,
method='supersmoother',
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
18123.00632204841,
decimal=2)
print("Detrending 9 (hspline)...")
flatten_lc, trend_lc = flatten(time,
flux,
window_length,
method='hspline',
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
18123.07625225313,
decimal=2)
print("Detrending 10 (cofiam)...")
flatten_lc, trend_lc = flatten(time[:2000],
flux[:2000],
window_length,
method='cofiam',
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
1948.9999999987976,
decimal=2)
print("Detrending 11 (savgol)...")
flatten_lc, trend_lc = flatten(time,
flux,
window_length=301,
method='savgol',
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
18123.003465539354,
decimal=2)
print("Detrending 12 (medfilt)...")
flatten_lc, trend_lc = flatten(time,
flux,
window_length=301,
method='medfilt',
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
18123.22609806557,
decimal=2)
print("Detrending 12 (gp squared_exp)...")
flatten_lc, trend_lc1 = flatten(time[:2000],
flux[:2000],
method='gp',
kernel='squared_exp',
kernel_size=10,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
1948.99958552324,
decimal=2)
print("Detrending 13 (gp squared_exp robust)...")
flatten_lc, trend_lc1 = flatten(time[:2000],
flux[:2000],
method='gp',
kernel='squared_exp',
kernel_size=10,
robust=True,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
1948.8820772313468,
decimal=2)
print("Detrending 14 (gp matern)...")
flatten_lc, trend_lc2 = flatten(time[:2000],
flux[:2000],
method='gp',
kernel='matern',
kernel_size=10,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
1949.0001583058202,
decimal=2)
print("Detrending 15 (gp periodic)...")
flatten_lc, trend_lc2 = flatten(time[:2000],
flux[:2000],
method='gp',
kernel='periodic',
kernel_size=1,
kernel_period=10,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
1948.9999708985608,
decimal=2)
time_synth = numpy.linspace(0, 30, 200)
flux_synth = numpy.sin(time_synth) + numpy.random.normal(0, 0.1, 200)
flux_synth = 1 + flux_synth / 100
time_synth *= 1.5
print("Detrending 16 (gp periodic_auto)...")
flatten_lc, trend_lc2 = flatten(time_synth,
flux_synth,
method='gp',
kernel='periodic_auto',
kernel_size=1,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 200, decimal=1)
print("Detrending 17 (rspline)...")
flatten_lc, trend_lc2 = flatten(time,
flux,
method='rspline',
window_length=1,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
18121.812790732245,
decimal=2)
print("Detrending 18 (huber)...")
flatten_lc, trend_lc = flatten(time[:1000],
flux[:1000],
method='huber',
window_length=0.5,
edge_cutoff=0,
break_tolerance=0.4,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
994.01102,
decimal=2)
print("Detrending 19 (winsorize)...")
flatten_lc, trend_lc2 = flatten(time,
flux,
method='winsorize',
window_length=0.5,
edge_cutoff=0,
break_tolerance=0.4,
proportiontocut=0.1,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
18119.064587196448,
decimal=2)
print("Detrending 20 (pspline)...")
flatten_lc, trend_lc = flatten(time,
flux,
method='pspline',
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
18121.832133916843,
decimal=2)
print("Detrending 21 (hampelfilt)...")
flatten_lc, trend_lc5 = flatten(time,
flux,
method='hampelfilt',
window_length=0.5,
cval=3,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
18119.158072498867,
decimal=2)
print("Detrending 22 (lowess)...")
flatten_lc, trend_lc1 = flatten(time,
flux,
method='lowess',
window_length=1,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
18123.08085676265,
decimal=2)
print("Detrending 23 (huber_psi)...")
flatten_lc, trend_lc1 = flatten(time,
flux,
method='huber_psi',
window_length=0.5,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
18119.122065014355,
decimal=2)
print("Detrending 24 (tau)...")
flatten_lc, trend_lc2 = flatten(time,
flux,
method='tau',
window_length=0.5,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
18119.02772621119,
decimal=2)
import numpy as np
points = 1000
time = np.linspace(0, 30, points)
flux = 1 + np.sin(time) / points
noise = np.random.normal(0, 0.0001, points)
flux += noise
for i in range(points):
if i % 75 == 0:
flux[i:i + 5] -= 0.0004 # Add some transits
flux[i + 50:i + 52] += 0.0002 # and flares
print("Detrending 25a (hampel 17A)...")
flatten_lc, trend_lc1 = flatten(time,
flux,
method='hampel',
cval=(1.7, 3.4, 8.5),
window_length=0.5,
return_trend=True)
print("Detrending 25b (hampel 25A)...")
flatten_lc, trend_lc2 = flatten(time,
flux,
method='hampel',
cval=(2.5, 4.5, 9.5),
window_length=0.5,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
997.9994362858843,
decimal=2)
print("Detrending 26 (ramsay)...")
flatten_lc, trend_lc3 = flatten(time,
flux,
method='ramsay',
cval=0.3,
window_length=0.5,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc),
997.9974021484584,
decimal=2)
"""
import matplotlib.pyplot as plt
plt.scatter(time, flux, s=1, color='black')
plt.plot(time[:len(trend_lc1)], trend_lc1, color='blue', linewidth=2)
plt.plot(time[:len(trend_lc1)], trend_lc2, color='red', linewidth=2, linestyle='dashed')
plt.show()
plt.close()
#plt.scatter(time, flatten_lc, s=1, color='black')
#plt.show()
"""
print('All tests completed.')
def main():
print("Starting tests for wotan...")
numpy.testing.assert_almost_equal(t14(R_s=1, M_s=1, P=365), 0.6490025258902046)
numpy.testing.assert_almost_equal(
t14(R_s=1, M_s=1, P=365, small_planet=True), 0.5403690143737738
)
print("Transit duration correct.")
numpy.random.seed(seed=0) # reproducibility
print("Slide clipper...")
points = 1000
time = numpy.linspace(0, 30, points)
flux = 1 + numpy.sin(time) / points
noise = numpy.random.normal(0, 0.0001, points)
flux += noise
for i in range(points):
if i % 75 == 0:
flux[i : i + 5] -= 0.0004 # Add some transits
flux[i + 50 : i + 52] += 0.0002 # and flares
clipped = slide_clip(
time, flux, window_length=0.5, low=3, high=2, method="mad", center="median"
)
numpy.testing.assert_almost_equal(numpy.nansum(clipped), 948.9926368754939)
"""
import matplotlib.pyplot as plt
plt.scatter(time, flux, s=3, color='black')
plt.scatter(time, clipped, s=3, color='orange')
plt.show()
"""
# TESS test
print("Loading TESS data from archive.stsci.edu...")
path = "https://archive.stsci.edu/hlsps/tess-data-alerts/"
# path = 'P:/P/Dok/tess_alarm/'
filename = "hlsp_tess-data-alerts_tess_phot_00062483237-s01_tess_v1_lc.fits"
time, flux = load_file(path + filename)
window_length = 0.5
print("Detrending 1 (biweight)...")
flatten_lc, trend_lc = flatten(
time,
flux,
window_length,
edge_cutoff=1,
break_tolerance=0.1,
return_trend=True,
cval=5.0,
)
numpy.testing.assert_equal(len(trend_lc), 20076)
numpy.testing.assert_almost_equal(
numpy.nanmax(trend_lc), 28755.03811866676, decimal=2
)
numpy.testing.assert_almost_equal(
numpy.nanmin(trend_lc), 28615.110229935075, decimal=2
)
numpy.testing.assert_almost_equal(trend_lc[500], 28671.650565730513, decimal=2)
numpy.testing.assert_equal(len(flatten_lc), 20076)
numpy.testing.assert_almost_equal(
numpy.nanmax(flatten_lc), 1.0034653549250616, decimal=2
)
numpy.testing.assert_almost_equal(
numpy.nanmin(flatten_lc), 0.996726610702177, decimal=2
)
numpy.testing.assert_almost_equal(flatten_lc[500], 1.000577429565131, decimal=2)
print("Detrending 2 (andrewsinewave)...")
flatten_lc, trend_lc = flatten(
time, flux, window_length, method="andrewsinewave", return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 18123.15456308313, decimal=2
)
print("Detrending 3 (welsch)...")
flatten_lc, trend_lc = flatten(
time, flux, window_length, method="welsch", return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 18123.16770590837, decimal=2
)
print("Detrending 4 (hodges)...")
flatten_lc, trend_lc = flatten(
time[:1000], flux[:1000], window_length, method="hodges", return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 996.0113241694287, decimal=2
)
print("Detrending 5 (median)...")
flatten_lc, trend_lc = flatten(
time, flux, window_length, method="median", return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 18123.12166552401, decimal=2
)
print("Detrending 6 (mean)...")
flatten_lc, trend_lc = flatten(
time, flux, window_length, method="mean", return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 18123.032058753546, decimal=2
)
print("Detrending 7 (trim_mean)...")
flatten_lc, trend_lc = flatten(
time, flux, window_length, method="trim_mean", return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 18123.094751124332, decimal=2
)
print("Detrending 8 (supersmoother)...")
flatten_lc, trend_lc = flatten(
time, flux, window_length, method="supersmoother", return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 18123.00632204841, decimal=2
)
print("Detrending 9 (hspline)...")
flatten_lc, trend_lc = flatten(
time, flux, window_length, method="hspline", return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 18123.082601463717, decimal=1
)
print("Detrending 10 (cofiam)...")
flatten_lc, trend_lc = flatten(
time[:2000], flux[:2000], window_length, method="cofiam", return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 1948.9999999987976, decimal=1
)
print("Detrending 11 (savgol)...")
flatten_lc, trend_lc = flatten(
time, flux, window_length=301, method="savgol", return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 18123.003465539354, decimal=1
)
print("Detrending 12 (medfilt)...")
flatten_lc, trend_lc = flatten(
time, flux, window_length=301, method="medfilt", return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 18123.22609806557, decimal=1
)
print("Detrending 12 (gp squared_exp)...")
flatten_lc, trend_lc1 = flatten(
time[:2000],
flux[:2000],
method="gp",
kernel="squared_exp",
kernel_size=10,
return_trend=True,
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 1948.9672036416687, decimal=2
)
print("Detrending 13 (gp squared_exp robust)...")
flatten_lc, trend_lc1 = flatten(
time[:2000],
flux[:2000],
method="gp",
kernel="squared_exp",
kernel_size=10,
robust=True,
return_trend=True,
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 1948.8820772313468, decimal=2
)
print("Detrending 14 (gp matern)...")
flatten_lc, trend_lc2 = flatten(
time[:2000],
flux[:2000],
method="gp",
kernel="matern",
kernel_size=10,
return_trend=True,
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 1948.9672464898367, decimal=2
)
print("Detrending 15 (gp periodic)...")
flatten_lc, trend_lc2 = flatten(
time[:2000],
flux[:2000],
method="gp",
kernel="periodic",
kernel_size=1,
kernel_period=10,
return_trend=True,
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 1948.9999708985608, decimal=2
)
time_synth = numpy.linspace(0, 30, 200)
flux_synth = numpy.sin(time_synth) + numpy.random.normal(0, 0.1, 200)
flux_synth = 1 + flux_synth / 100
time_synth *= 1.5
print("Detrending 16 (gp periodic_auto)...")
flatten_lc, trend_lc2 = flatten(
time_synth,
flux_synth,
method="gp",
kernel="periodic_auto",
kernel_size=1,
return_trend=True,
)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 200, decimal=1)
print("Detrending 17 (rspline)...")
flatten_lc, trend_lc2 = flatten(
time, flux, method="rspline", window_length=1, return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 18121.812790732245, decimal=2
)
"""
print("Detrending 18 (huber)...")
flatten_lc, trend_lc = flatten(
time[:1000],
flux[:1000],
method='huber',
window_length=0.5,
edge_cutoff=0,
break_tolerance=0.4,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 996.0112964009066, decimal=2)
"""
print("Detrending 19 (winsorize)...")
flatten_lc, trend_lc2 = flatten(
time,
flux,
method="winsorize",
window_length=0.5,
edge_cutoff=0,
break_tolerance=0.4,
proportiontocut=0.1,
return_trend=True,
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 18123.064149766662, decimal=2
)
print("Detrending 20 (pspline)...")
flatten_lc, trend_lc = flatten(time, flux, method="pspline", return_trend=True)
# import matplotlib.pyplot as plt
# plt.scatter(time, flux, s=3, color='black')
# plt.plot(time, trend_lc)
# plt.show()
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 18122.740535799767, decimal=2
)
print("Detrending 21 (hampelfilt)...")
flatten_lc, trend_lc5 = flatten(
time, flux, method="hampelfilt", window_length=0.5, cval=3, return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 18123.157973016467, decimal=2
)
print("Detrending 22 (lowess)...")
flatten_lc, trend_lc1 = flatten(
time, flux, method="lowess", window_length=1, return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 18123.039744125545, decimal=2
)
print("Detrending 23 (huber_psi)...")
flatten_lc, trend_lc1 = flatten(
time, flux, method="huber_psi", window_length=0.5, return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 18123.110893063527, decimal=2
)
print("Detrending 24 (tau)...")
flatten_lc, trend_lc2 = flatten(
time, flux, method="tau", window_length=0.5, return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 18123.026005725977, decimal=2
)
print("Detrending 25 (cosine)...")
flatten_lc, trend_lc2 = flatten(
time, flux, method="cosine", window_length=0.5, return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 18122.999999974905, decimal=2
)
print("Detrending 25 (cosine robust)...")
flatten_lc, trend_lc2 = flatten(
time, flux, method="cosine", robust=True, window_length=0.5, return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 18122.227938535038, decimal=2
)
import numpy as np
points = 1000
time = numpy.linspace(0, 30, points)
flux = 1 + numpy.sin(time) / points
noise = numpy.random.normal(0, 0.0001, points)
flux += noise
for i in range(points):
if i % 75 == 0:
flux[i : i + 5] -= 0.0004 # Add some transits
flux[i + 50 : i + 52] += 0.0002 # and flares
print("Detrending 26 (hampel 17A)...")
flatten_lc, trend_lc1 = flatten(
time,
flux,
method="hampel",
cval=(1.7, 3.4, 8.5),
window_length=0.5,
return_trend=True,
)
print("Detrending 27 (hampel 25A)...")
flatten_lc, trend_lc2 = flatten(
time,
flux,
method="hampel",
cval=(2.5, 4.5, 9.5),
window_length=0.5,
return_trend=True,
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 999.9992212031945, decimal=2
)
print("Detrending 28 (ramsay)...")
flatten_lc, trend_lc3 = flatten(
time, flux, method="ramsay", cval=0.3, window_length=0.5, return_trend=True
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 999.9970566765148, decimal=2
)
print("Detrending 29 (ridge)...")
flatten_lc, trend_lc1 = flatten(
time, flux, window_length=0.5, method="ridge", return_trend=True, cval=1
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 999.9999958887022, decimal=1
)
print("Detrending 30 (lasso)...")
flatten_lc, trend_lc2 = flatten(
time, flux, window_length=0.5, method="lasso", return_trend=True, cval=1
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 999.9999894829843, decimal=1
)
print("Detrending 31 (elasticnet)...")
flatten_lc, trend_lc3 = flatten(
time, flux, window_length=0.5, method="elasticnet", return_trend=True, cval=1
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 999.9999945063338, decimal=1
)
# Test of transit mask
print("Testing transit_mask")
filename = "hlsp_tess-data-alerts_tess_phot_00207081058-s01_tess_v1_lc.fits"
time, flux = load_file(path + filename)
from wotan import transit_mask
mask = transit_mask(time=time, period=14.77338, duration=0.21060, T0=1336.141095)
numpy.testing.assert_almost_equal(numpy.sum(mask), 302, decimal=1)
print("Detrending 32 (transit_mask cosine)")
flatten_lc1, trend_lc1 = flatten(
time,
flux,
method="cosine",
window_length=0.4,
return_trend=True,
robust=True,
mask=mask,
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc1), 18119.281265446625, decimal=1
)
print("Detrending 33 (transit_mask lowess)")
flatten_lc2, trend_lc2 = flatten(
time,
flux,
method="lowess",
window_length=0.8,
return_trend=True,
robust=True,
mask=mask,
)
# print(numpy.nansum(flatten_lc2))
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc2), 18119.30865711536, decimal=1
)
print("Detrending 34 (transit_mask GP)")
mask = transit_mask(time=time[:2000], period=100, duration=0.3, T0=1327.4)
flatten_lc2, trend_lc2 = flatten(
time[:2000],
flux[:2000],
method="gp",
kernel="matern",
kernel_size=0.8,
return_trend=True,
robust=True,
mask=mask,
)
# print(numpy.nansum(flatten_lc2))
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc2), 1948.9000170463796, decimal=1
)
print("Detrending 35 (pspline full features)")
flatten_lc, trend_lc, nsplines = flatten(
time,
flux,
method="pspline",
max_splines=100,
edge_cutoff=0.5,
return_trend=True,
return_nsplines=True,
verbose=True,
)
# print('lightcurve was split into', len(nsplines), 'segments')
# print('chosen number of splines', nsplines)
"""
import matplotlib.pyplot as plt
plt.scatter(time, flux, s=3, color='black')
plt.plot(time, trend_lc)
plt.show()
plt.scatter(time, flatten_lc, s=3, color='black')
plt.show()
"""
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 16678.312693036027, decimal=1
)
print("Detrending 36 (pspline variable PSPLINES_STDEV_CUT)")
flatten_lc, trend_lc, nsplines = flatten(
time,
flux,
method="pspline",
max_splines=100,
edge_cutoff=0.5,
stdev_cut=3,
return_trend=True,
return_nsplines=True,
verbose=True,
)
numpy.testing.assert_almost_equal(
numpy.nansum(flatten_lc), 16678.292210380347, decimal=2
)
"""
import matplotlib.pyplot as plt
plt.scatter(time, flux, s=1, color='black')
plt.plot(time, trend_lc, color='red', linewidth=2, linestyle='dashed')
plt.show()
plt.close()
"""
print("All tests completed.")
t0 = time.time()
lcf = lightkurve.search_lightcurve("TIC 251848941", mission="TESS", cadence="short", sector=[2], author="SPOC")\
.download_all()
lc = lcf.stitch().remove_nans()
lc = lc.remove_outliers(sigma_lower=float('inf'), sigma_upper=3)
lc_time = lc.time.value
flux = lc.flux.value
cadence = 2
window_length = 25 / cadence
flux = savgol_filter(flux, 11, 3)
R_s = 1.1
M_s = 1.3
P_min = 0.5
P_max = 22
ld_coefficients = [0.2, 0.1]
min_duration = wotan.t14(R_s, M_s, P_min, True)
max_duration = wotan.t14(R_s, M_s, P_max, True)
duration_grid = np.arange(min_duration * 24 * 60 // cadence,
max_duration * 24 * 60 // cadence, 1)
def calculate_semi_major_axis(period, star_mass):
G = 6.674e-11
period_seconds = period * 24. * 3600.
mass_kg = star_mass * 2.e30
a1 = (G * mass_kg * period_seconds**2 / 4. / (np.pi**2))**(1. / 3.)
return a1 / 1.496e11
a_au = calculate_semi_major_axis(0.5, M_s)
a_Rs = a_au / (R_s * 0.00465047)
def analyse(det_met, time_i, flatten_i, n_tra, ab, mass, mass_min, mass_max,
radius, radius_min, radius_max, id_run):
# ---------------------------------------------------------------------------------------------------------------------------------------------------------
# Detrending of the data using WOTAN
# ---------------------------------------------------------------------------------------------------------------------------------------------------------
# By default is used a 'biweight' method.
# It will detrend the lightcurve 'N_detrends' independent times
from wotan import flatten
if det_met == 2:
wl_min = 1
wl_max = 12
else:
tdur = t14(
R_s=radius, M_s=mass, P=P_protec, small_planet=True
) # we define the typical duration of a small planet in this star
wl_min = 3 * tdur # minimum transit duration
wl_max = 20 * tdur # maximum transit duration
wl_step = (wl_max - wl_min) / N_detrends
wl = np.arange(
wl_min, wl_max,
wl_step) # we define all the posibles window_length that we apply
global_flatten_lc = np.zeros((len(wl), len(flatten_i)))
global_trend_lc = np.zeros((len(wl), len(flatten_i)))
for i in range(0, len(wl)):
if det_met == 2:
flatten_lc, trend_lc = flatten(time_i,
flatten_i,
method='gp',
kernel='matern',
kernel_size=wl[i],
return_trend=True,
break_tolerance=0.5)
else:
flatten_lc, trend_lc = flatten(time_i,
flatten_i,
window_length=wl[i],
return_trend=True,
method='biweight',
break_tolerance=0.5)
global_flatten_lc[i] = flatten_lc
global_trend_lc[i] = trend_lc
## save in the log file all the information concerning the detrendins applied
warnings.filterwarnings("ignore")
global_final = np.zeros((len(wl), len(flatten_i)))
logprint('\n MODELS IN THE DETRENDING - Run ' + str(id_run))
logprint('========================================\n')
if det_met == 2:
det_model = 'kernel_size:'
else:
det_model = 'window_size:'
bins = len(time_i) * 2 / minutes
bin_means, bin_edges, binnumber = stats.binned_statistic(time_i,
flatten_i,
statistic='mean',
bins=bins)
bin_stds, _, _ = stats.binned_statistic(time_i,
flatten_i,
statistic='std',
bins=bins)
bin_width = (bin_edges[1] - bin_edges[0])
bin_centers = bin_edges[1:] - bin_width / 2
logprint('PDCSAP_FLUX_' + str(id_run), '\t ', ' ------ ', '\t', '------',
'\t', '\t', 'RMS (ppm):',
np.std(flatten_i) * 1e6, '\t', 'RMS_10min (ppm):',
np.std(bin_means[~np.isnan(bin_means)]) * 1e6)
for i in range(len(wl)):
flatten = sigma_clip(global_flatten_lc[i],
sigma_lower=20,
sigma_upper=3)
global_final[i] = flatten
bins_i = len(time_i) * 2 / minutes
bin_means_i, bin_edges_i, binnumber_i = stats.binned_statistic(
time_i, flatten, statistic='mean', bins=bins_i)
bin_stds_i, _, _ = stats.binned_statistic(time_i,
flatten,
statistic='std',
bins=bins_i)
bin_width_i = (bin_edges_i[1] - bin_edges_i[0])
bin_centers_i = bin_edges_i[1:] - bin_width_i / 2
logprint('flatten_lc%s' % i, '\t ', 'trend_lc%s' % i, '\t', det_model,
format(wl[i], '0.4f'), '\t', 'RMS (ppm):',
np.std(flatten) * 1e6, '\t', 'RMS_10min (ppm):',
np.std(bin_means_i[~np.isnan(bin_means_i)]) * 1e6)
## save in a plot all the detrendings and all the data to inspect visually.
cases = np.zeros((len(wl), 1))
for i in range(len(wl)):
cases[i] = wl[i]
figsize = (8, 8) #x,y
cols = 3
rows = len(cases) // cols
shift = 2 * (1.0 - (np.min(flatten_i))
) #shift in the between the raw and detrended data
ylim_max = 1.0 + 3 * (np.max(flatten_i) - 1.0
) #shift in the between the raw and detrended data
ylim_min = 1.0 - 2.0 * shift #shift in the between the raw and detrended data
fig1, axs = plt.subplots(rows,
cols,
figsize=figsize,
constrained_layout=True)
axs = trim_axs(axs, len(cases))
for ax, case in zip(axs, cases):
if det_met == 2:
ax.set_title('ks=%s' % str(np.around(case, decimals=4)))
else:
ax.set_title('ws=%s' % str(np.around(case, decimals=4)))
bins_i = len(time_i) * 2 / minutes
bin_means_i, bin_edges_i, binnumber_i = stats.binned_statistic(
time_i,
global_final[np.nonzero(cases == case)[0][0]],
statistic='mean',
bins=bins_i)
bin_stds_i, _, _ = stats.binned_statistic(
time_i,
global_final[np.nonzero(cases == case)[0][0]],
statistic='std',
bins=bins_i)
bin_width_i = (bin_edges_i[1] - bin_edges_i[0])
bin_centers_i = bin_edges_i[1:] - bin_width_i / 2
ax.plot(time_i,
flatten_i,
linewidth=0.05,
color='black',
alpha=0.75,
rasterized=True)
ax.plot(time_i,
global_trend_lc[np.nonzero(cases == case)[0][0]],
linewidth=1,
color='orange',
alpha=1.0)
ax.plot(time_i,
global_final[np.nonzero(cases == case)[0][0]] - shift,
linewidth=0.05,
color='teal',
alpha=0.75,
rasterized=True)
ax.plot(bin_centers_i,
bin_means_i - shift,
marker='.',
markersize=2,
color='firebrick',
alpha=0.5,
linestyle='none',
rasterized=True)
ax.set_ylim(ylim_min, ylim_max)
plt.savefig('Detrends_' + 'run_' + str(id_run) + '_TIC' + str(TIC_ID) +
'.png',
dpi=200)
# ---------------------------------------------------------------------------------------------------------------------------------------------------------
# Search of signals in the raw data
# ---------------------------------------------------------------------------------------------------------------------------------------------------------
logprint('\n SEARCH OF SIGNALS - Run', id_run)
logprint('=================================\n')
logprint('PDCSAP_FLUX_' + str(id_run), '\t', 'Period', '\t', 'Per_err',
'\t', 'N.Tran', '\t', 'Mean Depth(ppt)', '\t', 'T. dur(min)',
'\t', 'T0', '\t', 'SNR', '\t', 'SDE', '\t', 'FAP\n')
model = transitleastsquares(time_i, flatten_i)
results_pdcsap = model.power(u=ab,
M_star=mass,
M_star_min=mass_min,
M_star_max=mass_max,
R_star=radius,
R_star_min=radius_min,
R_star_max=radius_max,
period_min=Pmin,
period_max=Pmax,
n_transits_min=n_tra,
show_progress_bar=False)
x = []
if results_pdcsap.T0 != 0:
for j in range(0, len(results_pdcsap.transit_depths)):
# print (results.transit_depths[i])
x = np.append(x, results_pdcsap.transit_depths[j])
x = x[~np.isnan(x)]
depth = (1. - np.mean(x)) * 100 / 0.1 #we change to ppt units
else:
depth = results_pdcsap.transit_depths
logprint('-----', '\t ', format(results_pdcsap.period, '.5f'), '\t ',
format(results_pdcsap.period_uncertainty, '.6f'),
'\t ', results_pdcsap.distinct_transit_count, '\t',
format(depth, '.3f'), '\t',
format(results_pdcsap.duration * 24 * 60,
'.1f'), '\t', results_pdcsap.T0, '\t ',
format(results_pdcsap.snr, '.3f'), '\t ',
format(results_pdcsap.SDE, '.3f'), '\t ', results_pdcsap.FAP)
logprint('\n')
# ---------------------------------------------------------------------------------------------------------------------------------------------------------
# Saving a plot of the best signal from raw data
# ---------------------------------------------------------------------------------------------------------------------------------------------------------
fig = save_plot(time_i, global_final, results_pdcsap, i)
fig.suptitle('PDCSAP_FLUX_' + str(id_run) + ' ## SNR:' +
str(format(results_pdcsap.snr, '.3f')) + ' ## SDE:' +
str(format(results_pdcsap.SDE, '.3f')) + ' ## FAP:' +
str(results_pdcsap.FAP))
plt.savefig('Run_' + str(id_run) + '_PDCSAP-FLUX_' + 'TIC' + str(TIC_ID) +
'.png',
bbox_inches='tight',
dpi=200)
# ---------------------------------------------------------------------------------------------------------------------------------------------------------
# Search of signals in the detrended data
# ---------------------------------------------------------------------------------------------------------------------------------------------------------
if det_met == 2:
logprint('Kernel_size', '\t', 'Period', '\t', 'Per_err', '\t',
'N.Tran', '\t', 'Mean Depth(ppt)', '\t', 'T. dur(min)', '\t',
'T0', '\t', 'SNR', '\t', 'SDE', '\t', 'FAP\n')
else:
logprint('Window_size', '\t', 'Period', '\t', 'Per_err', '\t',
'N.Tran', '\t', 'Mean Depth(ppt)', '\t', 'T. dur(min)', '\t',
'T0', '\t', 'SNR', '\t', 'SDE', '\t', 'FAP\n')
SNR = np.zeros((len(wl), 1))
SDE = np.zeros((len(wl), 1))
FAP = np.zeros((len(wl), 1))
periods = np.zeros((len(wl), 1))
per_err = np.zeros((len(wl), 1))
durations = np.zeros((len(wl), 1))
tos = np.zeros((len(wl), 1))
for i in range(len(wl)):
print(i)
model = transitleastsquares(time_i, global_final[i])
results = model.power(u=ab,
M_star=mass,
M_star_min=mass_min,
M_star_max=mass_max,
R_star=radius,
R_star_min=radius_min,
R_star_max=radius_max,
period_min=Pmin,
period_max=Pmax,
n_transits_min=n_tra,
show_progress_bar=False)
SNR[i] = results.snr
SDE[i] = results.SDE
FAP[i] = results.FAP
periods[i] = results.period
per_err[i] = results.period_uncertainty
durations[i] = results.duration
tos[i] = results.T0
x = []
if results.T0 != 0:
for j in range(0, len(results.transit_depths)):
# print (results.transit_depths[i])
x = np.append(x, results.transit_depths[j])
x = x[~np.isnan(x)]
depth = (1. - np.mean(x)) * 100 / 0.1 #we change to ppt units
else:
depth = results.transit_depths
logprint(format(wl[i], '.4f'), '\t ', format(results.period,
'.5f'), '\t ',
format(results.period_uncertainty,
'.6f'), '\t ', results.distinct_transit_count, '\t',
format(depth, '.3f'), '\t',
format(results.duration * 24 * 60, '.1f'), '\t', results.T0,
'\t ', format(results.snr, '.3f'), '\t ',
format(results.SDE, '.3f'), '\t ', results.FAP)
# -----------------------------------------------------------------------------------------------------------------------------------------------------
# Saving a plot of the best signal from detrended data
# -----------------------------------------------------------------------------------------------------------------------------------------------------
fig = save_plot(time_i, global_final, results, i)
if det_met == 2:
fig.suptitle('Run ' + str(id_run) + ' ## kernel_size:' +
str(format(wl[i], '.4f')) + ' ## SNR:' +
str(format(results.snr, '.3f')) + ' ## SDE:' +
str(format(results.SDE, '.3f')) + ' ## FAP:' +
str(results.FAP))
#plt.savefig('TIC'+str(TIC_ID)+'_ks='+str(format(wl[i],'.4f'))+'_run_'+str(id_run)+'.png', bbox_inches='tight', dpi=200)
plt.savefig('Run_' + str(id_run) + '_ks=' +
str(format(wl[i], '.4f')) + '_TIC' + str(TIC_ID) +
'.png',
bbox_inches='tight',
dpi=200)
else:
fig.suptitle('Run ' + str(id_run) + ' ## window_size:' +
str(format(wl[i], '.4f')) + ' ## SNR:' +
str(format(results.snr, '.3f')) + ' ## SDE:' +
str(format(results.SDE, '.3f')) + ' ## FAP:' +
str(results.FAP))
#plt.savefig('TIC'+str(TIC_ID)+'_ws='+str(format(wl[i],'.4f'))+'_run_'+str(id_run)+'.png', bbox_inches='tight', dpi=200)
plt.savefig('Run_' + str(id_run) + '_ws=' +
str(format(wl[i], '.4f')) + '_TIC' + str(TIC_ID) +
'.png',
bbox_inches='tight',
dpi=200)
SNR = np.nan_to_num(SNR)
a = np.nanargmax(SNR) #check the maximum SRN
if results_pdcsap.snr > SNR[a]:
logprint('\nBest Signal -->', '\t', 'PDCSAP_FLUX', '\t', 'SNR:',
format(results_pdcsap.snr, '.3f'))
if (
results_pdcsap.snr > SNR_min
): # and results_pdcsap.SDE > SDE_min and results_pdcsap.FAP < FAP_max):
logprint(
'\nBest Signal is good enough to keep searching. Going to the next run.'
)
key = 1
else:
logprint('\nBest Signal does not look very promising. End')
key = 0
else:
if det_met == 2:
logprint('\nBest Signal -->', '\t', 'flatten_lc' + str(a), '\t',
'kernel_size:', format(wl[a], '0.4f'), '\t', 'SNR:',
format(SNR[a][0], '.3f'))
else:
logprint('\nBest Signal -->', '\t', 'flatten_lc' + str(a), '\t',
'window_size:', format(wl[a], '0.4f'), '\t', 'SNR:',
format(SNR[a][0], '.3f'))
if (SNR[a] > SNR_min): #and SDE[a] > SDE_min and FAP[a] < FAP_max):
logprint(
'\nBest Signal is good enough to keep searching. Going to the next run.'
)
key = 1
else:
logprint('\nBest Signal does not look very promising. End')
key = 0
print("### SNR :", str(format(results.snr, '.3f')), " SDE :",
str(format(results.SDE, '.3f')), " FAP :", str(results.FAP))
return results_pdcsap, SNR, key, periods, durations, tos
def main():
print("Starting tests for wotan...")
numpy.testing.assert_almost_equal(
t14(R_s=1, M_s=1, P=365),
0.6490025258902046)
numpy.testing.assert_almost_equal(
t14(R_s=1, M_s=1, P=365, small_planet=True),
0.5403690143737738)
print("Transit duration correct.")
numpy.random.seed(seed=0) # reproducibility
print("Slide clipper...")
points = 1000
time = numpy.linspace(0, 30, points)
flux = 1 + numpy.sin(time) / points
noise = numpy.random.normal(0, 0.0001, points)
flux += noise
for i in range(points):
if i % 75 == 0:
flux[i:i+5] -= 0.0004 # Add some transits
flux[i+50:i+52] += 0.0002 # and flares
clipped = slide_clip(
time,
flux,
window_length=0.5,
low=3,
high=2,
method='mad',
center='median'
)
numpy.testing.assert_almost_equal(numpy.nansum(clipped), 948.9926368754939)
"""
import matplotlib.pyplot as plt
plt.scatter(time, flux, s=3, color='black')
plt.scatter(time, clipped, s=3, color='orange')
plt.show()
"""
# TESS test
print('Loading TESS data from archive.stsci.edu...')
path = 'https://archive.stsci.edu/hlsps/tess-data-alerts/'
#path = 'P:/P/Dok/tess_alarm/'
filename = "hlsp_tess-data-alerts_tess_phot_00062483237-s01_tess_v1_lc.fits"
time, flux = load_file(path + filename)
window_length = 0.5
print("Detrending 1 (biweight)...")
flatten_lc, trend_lc = flatten(
time,
flux,
window_length,
edge_cutoff=1,
break_tolerance=0.1,
return_trend=True,
cval=5.0)
numpy.testing.assert_equal(len(trend_lc), 20076)
numpy.testing.assert_almost_equal(numpy.nanmax(trend_lc), 28755.03811866676, decimal=2)
numpy.testing.assert_almost_equal(numpy.nanmin(trend_lc), 28615.110229935075, decimal=2)
numpy.testing.assert_almost_equal(trend_lc[500], 28671.650565730513, decimal=2)
numpy.testing.assert_equal(len(flatten_lc), 20076)
numpy.testing.assert_almost_equal(numpy.nanmax(flatten_lc), 1.0034653549250616, decimal=2)
numpy.testing.assert_almost_equal(numpy.nanmin(flatten_lc), 0.996726610702177, decimal=2)
numpy.testing.assert_almost_equal(flatten_lc[500], 1.000577429565131, decimal=2)
print("Detrending 2 (andrewsinewave)...")
flatten_lc, trend_lc = flatten(time, flux, window_length, method='andrewsinewave', return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 18119.15471987987, decimal=2)
print("Detrending 3 (welsch)...")
flatten_lc, trend_lc = flatten(time, flux, window_length, method='welsch', return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 18119.16764691235, decimal=2)
print("Detrending 4 (hodges)...")
flatten_lc, trend_lc = flatten(time[:1000], flux[:1000], window_length, method='hodges', return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 994.0110525909206, decimal=2)
print("Detrending 5 (median)...")
flatten_lc, trend_lc = flatten(time, flux, window_length, method='median', return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 18119.122065014355, decimal=2)
print("Detrending 6 (mean)...")
flatten_lc, trend_lc = flatten(time, flux, window_length, method='mean', return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 18119.032473037714, decimal=2)
print("Detrending 7 (trim_mean)...")
flatten_lc, trend_lc = flatten(time, flux, window_length, method='trim_mean', return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 18119.095164910334, decimal=2)
print("Detrending 8 (supersmoother)...")
flatten_lc, trend_lc = flatten(time, flux, window_length, method='supersmoother', return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 18123.00632204841, decimal=2)
print("Detrending 9 (hspline)...")
flatten_lc, trend_lc = flatten(time, flux, window_length, method='hspline', return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 18123.082601463717, decimal=1)
print("Detrending 10 (cofiam)...")
flatten_lc, trend_lc = flatten(time[:2000], flux[:2000], window_length, method='cofiam', return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 1948.9999999987976, decimal=1)
print("Detrending 11 (savgol)...")
flatten_lc, trend_lc = flatten(time, flux, window_length=301, method='savgol', return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 18123.003465539354, decimal=1)
print("Detrending 12 (medfilt)...")
flatten_lc, trend_lc = flatten(time, flux, window_length=301, method='medfilt', return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 18123.22609806557, decimal=1)
print("Detrending 12 (gp squared_exp)...")
flatten_lc, trend_lc1 = flatten(
time[:2000],
flux[:2000],
method='gp',
kernel='squared_exp',
kernel_size=10,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 1948.9672036416687, decimal=2)
print("Detrending 13 (gp squared_exp robust)...")
flatten_lc, trend_lc1 = flatten(
time[:2000],
flux[:2000],
method='gp',
kernel='squared_exp',
kernel_size=10,
robust=True,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 1948.8820772313468, decimal=2)
print("Detrending 14 (gp matern)...")
flatten_lc, trend_lc2 = flatten(
time[:2000],
flux[:2000],
method='gp',
kernel='matern',
kernel_size=10,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 1948.9672464898367, decimal=2)
print("Detrending 15 (gp periodic)...")
flatten_lc, trend_lc2 = flatten(
time[:2000],
flux[:2000],
method='gp',
kernel='periodic',
kernel_size=1,
kernel_period=10,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 1948.9999708985608, decimal=2)
time_synth = numpy.linspace(0, 30, 200)
flux_synth = numpy.sin(time_synth) + numpy.random.normal(0, 0.1, 200)
flux_synth = 1 + flux_synth / 100
time_synth *= 1.5
print("Detrending 16 (gp periodic_auto)...")
flatten_lc, trend_lc2 = flatten(
time_synth,
flux_synth,
method='gp',
kernel='periodic_auto',
kernel_size=1,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 200, decimal=1)
print("Detrending 17 (rspline)...")
flatten_lc, trend_lc2 = flatten(
time,
flux,
method='rspline',
window_length=1,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 18121.812790732245, decimal=2)
print("Detrending 18 (huber)...")
flatten_lc, trend_lc = flatten(
time[:1000],
flux[:1000],
method='huber',
window_length=0.5,
edge_cutoff=0,
break_tolerance=0.4,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 994.01102, decimal=2)
print("Detrending 19 (winsorize)...")
flatten_lc, trend_lc2 = flatten(
time,
flux,
method='winsorize',
window_length=0.5,
edge_cutoff=0,
break_tolerance=0.4,
proportiontocut=0.1,
return_trend=True)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 18119.064587196448, decimal=2)
print("Detrending 20 (pspline)...")
flatten_lc, trend_lc = flatten(
time,
flux,
method='pspline',
return_trend=True
)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 18121.832133916843, decimal=2)
print("Detrending 21 (hampelfilt)...")
flatten_lc, trend_lc5 = flatten(
time,
flux,
method='hampelfilt',
window_length=0.5,
cval=3,
return_trend=True
)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 18119.158072498867, decimal=2)
print("Detrending 22 (lowess)...")
flatten_lc, trend_lc1 = flatten(
time,
flux,
method='lowess',
window_length=1,
return_trend=True
)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 18123.039744125545, decimal=2)
print("Detrending 23 (huber_psi)...")
flatten_lc, trend_lc1 = flatten(
time,
flux,
method='huber_psi',
window_length=0.5,
return_trend=True
)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 18119.122065014355, decimal=2)
print("Detrending 24 (tau)...")
flatten_lc, trend_lc2 = flatten(
time,
flux,
method='tau',
window_length=0.5,
return_trend=True
)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 18119.02772621119, decimal=2)
print("Detrending 25 (cosine)...")
flatten_lc, trend_lc2 = flatten(
time,
flux,
method='cosine',
window_length=0.5,
return_trend=True
)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 18122.999999974905, decimal=2)
print("Detrending 25 (cosine robust)...")
flatten_lc, trend_lc2 = flatten(
time,
flux,
method='cosine',
robust=True,
window_length=0.5,
return_trend=True
)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 18122.227938535038, decimal=2)
import numpy as np
points = 1000
time = numpy.linspace(0, 30, points)
flux = 1 + numpy.sin(time) / points
noise = numpy.random.normal(0, 0.0001, points)
flux += noise
for i in range(points):
if i % 75 == 0:
flux[i:i+5] -= 0.0004 # Add some transits
flux[i+50:i+52] += 0.0002 # and flares
print("Detrending 26 (hampel 17A)...")
flatten_lc, trend_lc1 = flatten(
time,
flux,
method='hampel',
cval=(1.7, 3.4, 8.5),
window_length=0.5,
return_trend=True
)
print("Detrending 27 (hampel 25A)...")
flatten_lc, trend_lc2 = flatten(
time,
flux,
method='hampel',
cval=(2.5, 4.5, 9.5),
window_length=0.5,
return_trend=True
)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 997.9994362858843, decimal=2)
print("Detrending 28 (ramsay)...")
flatten_lc, trend_lc3 = flatten(
time,
flux,
method='ramsay',
cval=0.3,
window_length=0.5,
return_trend=True
)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 997.9974021484584, decimal=2)
print("Detrending 29 (ridge)...")
flatten_lc, trend_lc1 = flatten(
time,
flux,
window_length=0.5,
method='ridge',
return_trend=True,
cval=1)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 999.9999958887022, decimal=1)
print("Detrending 30 (lasso)...")
flatten_lc, trend_lc2 = flatten(
time,
flux,
window_length=0.5,
method='lasso',
return_trend=True,
cval=1)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 999.9999894829843, decimal=1)
print("Detrending 31 (elasticnet)...")
flatten_lc, trend_lc3 = flatten(
time,
flux,
window_length=0.5,
method='elasticnet',
return_trend=True,
cval=1)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc), 999.9999945063338, decimal=1)
# Test of transit mask
print('Testing transit_mask')
filename = 'hlsp_tess-data-alerts_tess_phot_00207081058-s01_tess_v1_lc.fits'
time, flux = load_file(path + filename)
from wotan import transit_mask
mask = transit_mask(
time=time,
period=14.77338,
duration=0.21060,
T0=1336.141095
)
numpy.testing.assert_almost_equal(numpy.sum(mask), 302, decimal=1)
print('Detrending 32 (transit_mask cosine)')
flatten_lc1, trend_lc1 = flatten(
time,
flux,
method='cosine',
window_length=0.4,
return_trend=True,
robust=True,
mask=mask
)
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc1), 18119.281265446625, decimal=1)
print('Detrending 33 (transit_mask lowess)')
flatten_lc2, trend_lc2 = flatten(
time,
flux,
method='lowess',
window_length=0.8,
return_trend=True,
robust=True,
mask=mask
)
#print(numpy.nansum(flatten_lc2))
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc2), 18119.30865711536, decimal=1)
print('Detrending 34 (transit_mask GP)')
mask = transit_mask(
time=time[:2000],
period=100,
duration=0.3,
T0=1327.4
)
flatten_lc2, trend_lc2 = flatten(
time[:2000],
flux[:2000],
method='gp',
kernel='matern',
kernel_size=0.8,
return_trend=True,
robust=True,
mask=mask
)
#print(numpy.nansum(flatten_lc2))
numpy.testing.assert_almost_equal(numpy.nansum(flatten_lc2), 1948.9000170463796, decimal=1)
"""
import matplotlib.pyplot as plt
plt.scatter(time[:2000], flux[:2000], s=1, color='black')
plt.plot(time[:2000], trend_lc2, color='red', linewidth=2, linestyle='dashed')
plt.show()
plt.close()
"""
print('All tests completed.')
