def make_total_event_list():
"""Make total event list.
TODO: move this function to the datastore class
and the sky box selection to the `make_counts_image` function.
"""
data_store = DataStore(dir=HESSFITS_MPP)
observation_selection = dict(type='sky_box', frame='galactic',
lon=Quantity([-120, 70], 'deg'),
lat=Quantity([-5, 5], 'deg'), border=Quantity(2, 'deg') )
observation_table = data_store.make_observation_table(observation_selection)
# For testing, only process a small subset of observations
# observation_table = observation_table.select_linspace_subset(num=1000)
event_list_files = data_store.make_table_of_files(observation_table, filetypes=['events'])
ds = EventListDataset.vstack_from_files(event_list_files['filename'])
print('Total number of events: {}'.format(len(ds.event_list)))
print('Total number of GTIs: {}'.format(len(ds.good_time_intervals)))
print('Converting EventListDataset to HDUList ...')
hdu_list = ds.to_fits()
print('Writing {}'.format(TOTAL_EVENTS_FILE))
hdu_list.writeto(TOTAL_EVENTS_FILE, clobber=True)
def test_image_pipe(tmpdir):
tmpdir = str(tmpdir)
from subprocess import call
outdir = tmpdir
outdir2 = outdir + '/background'
cmd = 'mkdir -p {}'.format(outdir2)
print('Executing: {}'.format(cmd))
call(cmd, shell=True)
ds = DataStore.from_dir("$GAMMAPY_EXTRA/datasets/hess-crab4-hd-hap-prod2")
ds.copy_obs(ds.obs_table, tmpdir)
data_store = DataStore.from_dir(tmpdir)
bgmaker = OffDataBackgroundMaker(data_store, outdir=outdir2)
bgmaker.select_observations(selection='all')
bgmaker.group_observations()
bgmaker.make_model("2D")
bgmaker.save_models("2D")
fn = outdir2 + '/group-def.fits'
hdu_index_table = bgmaker.make_total_index_table(
data_store=data_store,
modeltype='2D',
out_dir_background_model=outdir2,
filename_obs_group_table=fn
)
fn = outdir + '/hdu-index.fits.gz'
hdu_index_table.write(fn, overwrite=True)
tmpdir = str(tmpdir)
center = SkyCoord(83.63, 22.01, unit='deg').galactic
energy_band = Energy([1, 10], 'TeV')
offset_band = Angle([0, 2.49], 'deg')
data_store = DataStore.from_dir(tmpdir)
# TODO: fix `binarize` implementation
# exclusion_mask = exclusion_mask.binarize()
image = SkyImage.empty(nxpix=250, nypix=250, binsz=0.02, xref=center.l.deg,
yref=center.b.deg, proj='TAN', coordsys='GAL')
refheader = image.to_image_hdu().header
exclusion_mask = SkyMask.read('$GAMMAPY_EXTRA/datasets/exclusion_masks/tevcat_exclusion.fits')
exclusion_mask = exclusion_mask.reproject(reference=refheader)
# Pb with the load psftable for one of the run that is not implemented yet...
data_store.hdu_table.remove_row(14)
mosaic = MosaicImage(image, energy_band=energy_band, offset_band=offset_band, data_store=data_store,
obs_table=data_store.obs_table, exclusion_mask=exclusion_mask)
mosaic.make_images(make_background_image=True, for_integral_flux=True, radius=10.)
assert_allclose(mosaic.maps['counts'].data.sum(), 2334.0, atol=3)
assert_allclose(mosaic.maps['bkg'].data.sum(), 1987.1513636663785, atol=3)
assert_allclose(mosaic.maps['exposure'].data.sum(), 54190569251987.68, atol=3)
assert_allclose(mosaic.maps['significance'].lookup(center), 33.707901541600634, atol=3)
assert_allclose(mosaic.maps['excess'].data.sum(), 346.8486363336217, atol=3)
def test_image_pipe(tmpdir):
tmpdir = str(tmpdir)
from subprocess import call
outdir = tmpdir
outdir2 = outdir + '/background'
cmd = 'mkdir -p {}'.format(outdir2)
print('Executing: {}'.format(cmd))
call(cmd, shell=True)
ds = DataStore.from_dir("$GAMMAPY_EXTRA/datasets/hess-crab4-hd-hap-prod2")
ds.copy_obs(ds.obs_table, tmpdir)
data_store = DataStore.from_dir(tmpdir)
bgmaker = OffDataBackgroundMaker(data_store, outdir=outdir2)
bgmaker.select_observations(selection='all')
bgmaker.group_observations()
bgmaker.make_model("2D")
bgmaker.save_models("2D")
fn = outdir2 + '/group-def.fits'
hdu_index_table = bgmaker.make_total_index_table(
data_store=data_store,
modeltype='2D',
out_dir_background_model=outdir2,
filename_obs_group_table=fn
)
fn = outdir + '/hdu-index.fits.gz'
hdu_index_table.write(fn, overwrite=True)
tmpdir = str(tmpdir)
center = SkyCoord(83.63, 22.01, unit='deg').galactic
energy_band = Energy([1, 10], 'TeV')
offset_band = Angle([0, 2.49], 'deg')
data_store = DataStore.from_dir(tmpdir)
# TODO: fix `binarize` implementation
# exclusion_mask = exclusion_mask.binarize()
image = SkyMap.empty(nxpix=250, nypix=250, binsz=0.02, xref=center.l.deg,
yref=center.b.deg, proj='TAN', coordsys='GAL')
refheader = image.to_image_hdu().header
exclusion_mask = ExclusionMask.read('$GAMMAPY_EXTRA/datasets/exclusion_masks/tevcat_exclusion.fits')
exclusion_mask = exclusion_mask.reproject(reference=refheader)
images = ImageAnalysis(image, energy_band=energy_band, offset_band=offset_band, data_store=data_store,
obs_table=data_store.obs_table, exclusion_mask=exclusion_mask)
images.make_maps(radius=10., bkg_norm=True, spectral_index=2.3, for_integral_flux=True)
def make_bg_model_two_groups():
from subprocess import call
outdir = '/Users/jouvin/Desktop/these/temp/bg_model_image/'
outdir2 = outdir + '/background'
cmd = 'mkdir -p {}'.format(outdir2)
print('Executing: {}'.format(cmd))
call(cmd, shell=True)
cmd = 'cp -r $GAMMAPY_EXTRA/datasets/hess-crab4-hd-hap-prod2/ {}'.format(outdir)
print('Executing: {}'.format(cmd))
call(cmd, shell=True)
data_store = DataStore.from_dir('$GAMMAPY_EXTRA/datasets/hess-crab4-hd-hap-prod2/')
bgmaker = OffDataBackgroundMaker(data_store, outdir=outdir2)
bgmaker.select_observations(selection='all')
bgmaker.group_observations()
bgmaker.make_model("2D")
bgmaker.save_models("2D")
fn = outdir2 + '/group-def.fits'
hdu_index_table = bgmaker.make_total_index_table(
data_store=data_store,
modeltype='2D',
out_dir_background_model=outdir2,
filename_obs_group_table=fn
)
fn = outdir + '/hdu-index.fits.gz'
hdu_index_table.write(fn, overwrite=True)
def make_image():
table = Table.read('acceptance_curve.fits')
table.pprint()
center = SkyCoord(83.63, 22.01, unit='deg').galactic
counts_image = make_empty_image(nxpix=1000, nypix=1000, binsz=0.01, xref=center.l.deg, yref=center.b.deg,
proj='TAN')
bkg_image = counts_image.copy()
data_store = DataStore.from_dir('$GAMMAPY_EXTRA/datasets/hess-crab4-hd-hap-prod2')
for events in data_store.load_all("events"):
center = events.pointing_radec.galactic
livetime = events.observation_live_time_duration
solid_angle = Angle(0.01, "deg") ** 2
counts_image.data += bin_events_in_image(events, counts_image).data
#interp_param = dict(bounds_error=False, fill_value=None)
acc_hdu = fill_acceptance_image(bkg_image.header, center, table["offset"], table["Acceptance"])
acc = Quantity(acc_hdu.data, table["Acceptance"].unit) * solid_angle * livetime
bkg_image.data += acc.decompose()
print(acc.decompose().sum())
counts_image.writeto("counts_image.fits", clobber=True)
bkg_image.writeto("bkg_image.fits", clobber=True)
def make_counts_array():
"""Make an example counts array with energy and offset axes."""
data_store = DataStore.from_dir(gammapy_extra.dir / 'datasets/hess-crab4')
event_lists = data_store.load_all('events')
ebounds = EnergyBounds.equal_log_spacing(0.1, 100, 100, 'TeV')
offset = np.linspace(0, 2.5, 100)
array = EnergyOffsetArray(ebounds, offset)
array.fill_events(event_lists)
return array
def make_counts_array():
"""Make an example counts array with energy and offset axes."""
data_store = DataStore.from_dir('$GAMMAPY_EXTRA/datasets/hess-crab4-hd-hap-prod2')
event_lists = data_store.load_all('events')
ebounds = EnergyBounds.equal_log_spacing(0.1, 100, 100, 'TeV')
offset = Angle(np.linspace(0, 2.5, 100), "deg")
array = EnergyOffsetArray(ebounds, offset)
array.fill_events(event_lists)
return array
def test_obs():
# data_store = DataStore.from_dir('$GAMMAPY_EXTRA/datasets/hess-crab4-hd-hap-prod2')
data_store = DataStore.from_dir('$GAMMAPY_EXTRA/datasets/hess-crab4-pa')
data_store.info()
obs = data_store.obs(obs_id=23523)
# import IPython; IPython.embed()
# obs.info()
# print(type(obs.events))
# print(type(obs.gti))
print(type(obs.aeff))
print(type(obs.edisp))
print(type(obs.psf))
def test_fill_cube():
filename = '$GAMMAPY_EXTRA/test_datasets/background/bg_cube_model_test1.fits'
array = FOVCube.read(filename, format='table', scheme='bg_cube')
array.data = Quantity(np.zeros_like(array.data.value), 'u')
print(type(array.data))
dir = '$GAMMAPY_EXTRA/datasets/hess-crab4-hd-hap-prod2'
data_store = DataStore.from_dir(dir)
ev_list = data_store.load_all('events')
array.fill_events(ev_list)
array.write('test_background.fits', format='image', clobber=True)
def make_model():
dir = str(gammapy_extra.dir) + '/datasets/hess-crab4-hd-hap-prod2'
data_store = DataStore.from_dir(dir)
obs_table = data_store.obs_table
ebounds = EnergyBounds.equal_log_spacing(0.1, 100, 100, 'TeV')
offset = sqrt_space(start=0, stop=2.5, num=100) * u.deg
excluded_sources = make_excluded_sources()
multi_array = EnergyOffsetBackgroundModel(ebounds, offset)
multi_array.fill_obs(obs_table, data_store, excluded_sources)
#multi_array.fill_obs(obs_table, data_store)
multi_array.compute_rate()
bgarray = multi_array.bg_rate
energy_range = Energy([1, 10], 'TeV')
table = bgarray.acceptance_curve_in_energy_band(energy_range, energy_bins=10)
multi_array.write('energy_offset_array.fits', overwrite=True)
table.write('acceptance_curve.fits', overwrite=True)
def make_image_from_2d_bg():
center = SkyCoord(83.63, 22.01, unit='deg').galactic
energy_band = Energy([1, 10], 'TeV')
offset_band = Angle([0, 2.49], 'deg')
data_store = DataStore.from_dir('/Users/jouvin/Desktop/these/temp/bg_model_image/')
# TODO: fix `binarize` implementation
# exclusion_mask = exclusion_mask.binarize()
image = SkyImage.empty(nxpix=250, nypix=250, binsz=0.02, xref=center.l.deg,
yref=center.b.deg, proj='TAN', coordsys='GAL')
refheader = image.to_image_hdu().header
exclusion_mask = SkyMask.read('$GAMMAPY_EXTRA/datasets/exclusion_masks/tevcat_exclusion.fits')
exclusion_mask = exclusion_mask.reproject(reference=refheader)
mosaic_images = MosaicImage(image, energy_band=energy_band, offset_band=offset_band, data_store=data_store,
obs_table=data_store.obs_table, exclusion_mask=exclusion_mask)
mosaic_images.make_images(make_background_image=True, for_integral_flux=True, radius=10., make_psf = True,
region_center=center)
filename = 'fov_bg_maps.fits'
log.info('Writing {}'.format(filename))
mosaic_images.maps.write(filename, clobber=True)
def run_test_fitsexport(directory):
"""Run example analysis to test a fits data production
hap-data-fits-export crab has to be run in order to produce the example data
"""
log.info('Running test analysis of fits data')
from gammapy.data import DataStore
from gammapy.datasets import gammapy_extra
from gammapy.utils.scripts import read_yaml
from gammapy.spectrum.spectrum_pipe import run_spectrum_analysis_using_config
from gammapy.spectrum.results import SpectrumResult
s = DataStore.from_dir(directory)
print(s.info())
configfile = gammapy_extra.filename(
'test_datasets/spectrum/spectrum_analysis_example.yaml')
config = read_yaml(configfile)
config['extraction']['data']['datastore'] = directory
config['extraction']['data']['runlist'] = [23523, 23526, 23559, 23592]
fit, analysis = run_spectrum_analysis_using_config(config)
res = SpectrumResult(fit=fit.result, stats=analysis.observations.total_spectrum.spectrum_stats)
print(res.to_table())
def run_benchmark():
# Set up data store and select N_OBS times the observation OBS_ID
data_store = DataStore.from_dir('$GAMMAPY_EXTRA/test_datasets/cta_1dc/')
obs_ids = OBS_ID * np.ones(N_OBS)
obs_list = data_store.obs_list(obs_id=obs_ids)
target_position = SkyCoord(0, 0, unit='deg', frame='galactic')
on_radius = 0.2 * u.deg
on_region = CircleSkyRegion(center=target_position, radius=on_radius)
bkg_estimator = RingBackgroundEstimator(
r_in=0.5 * u.deg,
width=0.2 * u.deg,
)
# Define reference image centered on the target
xref = target_position.galactic.l.value
yref = target_position.galactic.b.value
ref_image = SkyImage.empty(
nxpix=800, nypix=600, binsz=0.02,
xref=xref, yref=yref,
proj='TAN', coordsys='GAL',
)
exclusion_mask = ref_image.region_mask(on_region)
exclusion_mask.data = 1 - exclusion_mask.data
image_estimator = IACTBasicImageEstimator(
reference=ref_image,
emin=100 * u.GeV,
emax=100 * u.TeV,
offset_max=3 * u.deg,
background_estimator=bkg_estimator,
exclusion_mask=exclusion_mask,
)
result = image_estimator.run(obs_list)
def observations():
"""Example observation list for testing."""
datastore = DataStore.from_dir("$GAMMAPY_DATA/cta-1dc/index/gps")
return datastore.get_observations([111630])
def observations():
data_store = DataStore.from_dir("$GAMMAPY_DATA/cta-1dc/index/gps/")
obs_id = [110380, 111140]
return data_store.get_observations(obs_id)
def setup(self):
self.data_store = DataStore.from_dir("$GAMMAPY_DATA/cta-1dc/index/gps")
def observations_cta_dc1():
"""CTA DC1 observation list."""
datastore = DataStore.from_dir("$GAMMAPY_DATA/cta-1dc/index/gps/")
obs_ids = [110380, 111140]
return datastore.get_observations(obs_ids)
def observations_magic_dl3():
"""MAGIC DL3 observation list."""
datastore = DataStore.from_dir("$GAMMAPY_DATA/joint-crab/dl3/magic/")
obs_ids = [5029748]
return datastore.get_observations(obs_ids, required_irf=["aeff", "edisp"])
def data_prep():
data_store = DataStore.from_dir("$GAMMAPY_DATA/hess-dl3-dr1/")
OBS_ID = 23523
obs_ids = OBS_ID * np.ones(N_OBS)
observations = data_store.get_observations(obs_ids)
target_position = SkyCoord(ra=83.63, dec=22.01, unit="deg", frame="icrs")
on_region_radius = Angle("0.11 deg")
on_region = CircleSkyRegion(center=target_position,
radius=on_region_radius)
exclusion_region = CircleSkyRegion(
center=SkyCoord(183.604, -8.708, unit="deg", frame="galactic"),
radius=0.5 * u.deg,
)
skydir = target_position.galactic
exclusion_mask = Map.create(npix=(150, 150),
binsz=0.05,
skydir=skydir,
proj="TAN",
frame="galactic")
mask = exclusion_mask.geom.region_mask([exclusion_region], inside=False)
exclusion_mask.data = mask
e_reco = MapAxis.from_bounds(0.1,
40,
nbin=40,
interp="log",
unit="TeV",
name="energy")
e_true = MapAxis.from_bounds(0.05,
100,
nbin=200,
interp="log",
unit="TeV",
name="energy_true")
empty = SpectrumDatasetOnOff.create(
region=on_region,
e_reco=e_reco,
e_true=e_true,
)
dataset_maker = SpectrumDatasetMaker(containment_correction=True,
selection=["counts", "aeff", "edisp"])
bkg_maker = ReflectedRegionsBackgroundMaker(exclusion_mask=exclusion_mask)
safe_mask_masker = SafeMaskMaker(methods=["aeff-max"], aeff_percent=10)
spectral_model = PowerLawSpectralModel(index=2,
amplitude=2e-11 *
u.Unit("cm-2 s-1 TeV-1"),
reference=1 * u.TeV)
spatial_model = PointSpatialModel(lon_0=target_position.ra,
lat_0=target_position.dec,
frame="icrs")
spatial_model.lon_0.frozen = True
spatial_model.lat_0.frozen = True
sky_model = SkyModel(spatial_model=spatial_model,
spectral_model=spectral_model,
name="")
# Data preparation
datasets = []
for idx, observation in enumerate(observations):
dataset = empty.copy(name=f"dataset{idx}")
dataset = dataset_maker.run(dataset=dataset, observation=observation)
dataset_on_off = bkg_maker.run(dataset, observation)
dataset_on_off = safe_mask_masker.run(dataset_on_off, observation)
dataset_on_off.models = sky_model
datasets.append(dataset_on_off)
return Datasets(datasets)
def test_data_store2():
dir = gammapy_extra.dir / 'datasets/hess-crab4-hd-hap-prod2'
ds = DataStore.from_dir(dir)
ds.info()
def proceeding_plot(obs):
# import IPython; IPython.embed()
fig, axes = plt.subplots(nrows=1, ncols=3, figsize=(12, 4))
obs.aeff.plot_energy_dependence(ax=axes[0])
edisp = obs.edisp.to_energy_dispersion(offset='1 deg')
# edisp.plot_matrix(ax=axes[1])
psf_edep = obs.psf.to_table_psf(theta='1 deg')
for energy in [1, 3] * u.TeV:
psf = psf_edep.table_psf_at_energy(energy)
psf.plot_psf_vs_theta()
plt.xscale('linear')
plt.yscale('linear')
plt.xlim(0, 0.5)
fig.tight_layout()
filename = 'iact-dl3.pdf'
print('Writing ', filename)
fig.savefig(filename)
if __name__ == '__main__':
data_store = DataStore.from_dir('$HOME/code/HESS-DL3-DR1/release_store/')
obs = data_store.obs(obs_id=23592)
proceeding_plot(obs)
peek_plots(obs)
def setup(self):
data_store = DataStore.from_dir("$GAMMAPY_DATA/cta-1dc/index/gps")
self.observation = data_store.obs(111140)
def check_energy_binning_effects():
"""Check how spectral fit results change with energy binnings.
Actually this is still using the default:
In [14]: print(analysis.extraction.observations[0].edisp)
EnergyDispersion
NDDataArray summary info
e_true : size = 108, min = 0.010 TeV, max = 301.416 TeV
e_reco : size = 72, min = 0.011 TeV, max = 93.804 TeV
Data : size = 7776, min = 0.000, max = 1.000
But now, the fit results from SpectrumAnalysisIACT, which is just
driving Fitspectrum, are different, almost the same as Sherpa.
Current results
Parameters:
name value error unit min max frozen
--------- --------- --------- --------------- --- --- ------
index 2.620e+00 1.540e-01 nan nan False
amplitude 3.849e-11 5.407e-12 1 / (cm2 s TeV) nan nan False
reference 1.000e+00 0.000e+00 TeV nan nan True
Covariance:
name/name index amplitude
--------- -------- ---------
index 0.0237 5.85e-13
amplitude 5.85e-13 2.92e-23
Statistic: -157.166 (cash)
Fit Range: [ 1. 27.82559402] TeV
???
"""
data_store = DataStore.from_dir("data/hess")
obs_list = data_store.obs_list([23523])
on_region = CircleSkyRegion(conf.crab_position, conf.on_radius["hess"])
fp_binning = [1, 10, 30] * u.TeV
exclusion_mask = get_exclusion_mask(conf.crab_position)
model = PowerLaw(
amplitude=1.23 * 1e-11 * u.Unit("cm-2 s-1 TeV-1"),
reference=1 * u.Unit("TeV"),
index=2.14 * u.Unit(""),
)
cfg = dict(
outdir=None,
background=dict(
on_region=on_region,
exclusion_mask=exclusion_mask,
# min_distance=0.1 * u.rad,
),
extraction=dict(containment_correction=True),
fit=dict(
model=model,
stat="cash",
# forward_folded=True,
fit_range=energy_range,
),
fp_binning=fp_binning,
)
analysis = SpectrumAnalysisIACT(obs_list, cfg)
analysis.run()
analysis.fit.est_errors()
print("BEFORE", analysis.fit.result[0])
# print(analysis.extraction.observations[0].edisp)
# pprint(analysis.fit.__dict__)
# obs = analysis.fit.obs_list[0]
# print(obs)
# # import IPython; IPython.embed()
# obs.peek()
# import matplotlib.pyplot as plt
# plt.savefig('check_energy_binning_effects.png')
# print('This is check_energy_binning_effects')
# Try to see if the I/O causes a change in results.
analysis.extraction.observations.write("temp123")
analysis.extraction.observations.write("temp123", use_sherpa=True)
obs = SpectrumObservation.read("temp123/pha_obs23523.fits")
model = PowerLaw(
amplitude=1.23 * 1e-11 * u.Unit("cm-2 s-1 TeV-1"),
reference=1 * u.Unit("TeV"),
index=2.14 * u.Unit(""),
)
fit = SpectrumFit(obs_list=obs, model=model, fit_range=energy_range, stat="cash")
fit.run()
print("AFTER", fit.result[0])
def setup(self):
paths = [
f"$GAMMAPY_DATA/cta-1dc/data/baseline/gps/gps_baseline_{obs_id:06d}.fits"
for obs_id in [110380, 111140, 111630, 111159]
]
self.data_store = DataStore.from_events_files(paths)
def observation():
"""Example observation list for testing."""
datastore = DataStore.from_dir("$GAMMAPY_DATA/hess-dl3-dr1/")
obs_id = 23523
return datastore.obs(obs_id)
import numpy as np
import matplotlib.pyplot as plt
import astropy.units as u
from astropy.coordinates import SkyCoord
from astropy.convolution import Ring2DKernel, Tophat2DKernel
from astropy.visualization import simple_norm
from gammapy.data import DataStore
from gammapy.image import SkyImage, SkyImageList
from gammapy.detect import KernelBackgroundEstimator as KBE
#choose the obsevartion
name="PKS 2155-304"
datastore = DataStore.from_dir("$HESS_DATA")
src=SkyCoord.from_name(name)
sep=SkyCoord.separation(src,datastore.obs_table.pointing_radec)
srcruns=(datastore.obs_table[sep<2.0*u.deg])
obsid=srcruns['OBS_ID'].data
#mylist=datastore.obs_list((obsid[0],))
mylist=datastore.obs_list(obsid[0:5])
obs_table=Table()
obs_table['OBS_ID']=obsid[0:5]
ref_image = SkyImage.empty(
nxpix=400, nypix=400, binsz=0.02,
xref=src.ra.deg, yref=src.dec.deg,
coordsys='CEL', proj='TAN',
)
def make_reco_model():
"""Make a reco bg cube model."""
METHOD = 'default'
data_dir = 'test_dataset'
overwrite = OVERWRITE
test = TEST
group_id = GROUP_ID
# create output folder
outdir = os.path.join(OUTDIR, 'reco')
_create_dir(outdir, overwrite)
# 0. create dummy observation grouping
obs_groups = create_dummy_observation_grouping()
# save
outfile = os.path.join(outdir, 'bg_observation_groups.ecsv')
print('Writing {}'.format(outfile, overwrite=overwrite))
obs_groups.write(outfile)
# 1. create dummy dataset
# use enough stats so that rebinning (and resmoothing?) doesn't take place
n_obs = 100
if test:
# run fast
n_obs = 2
az_range = AZ_RANGE
alt_range = ALT_RANGE
random_state = np.random.RandomState(seed=0)
sigma = SIGMA
spectral_index = INDEX
make_test_dataset(outdir=data_dir, overwrite=overwrite,
observatory_name='HESS', n_obs=n_obs,
az_range=az_range,
alt_range=alt_range,
date_range=(Time('2010-01-01T00:00:00',
format='isot', scale='utc'),
Time('2015-01-01T00:00:00',
format='isot', scale='utc')),
n_tels_range=(3, 4),
sigma=sigma,
spectral_index=spectral_index,
random_state=random_state)
# 2. get observation table
data_store = DataStore.from_dir(dir=data_dir)
observation_table = data_store.make_observation_table()
outfile = os.path.join(outdir, 'bg_observation_table_group{}.fits.gz'.format(group_id))
print("Writing {}".format(outfile))
observation_table.write(outfile, overwrite=overwrite)
# 3. build bg model
method = METHOD
bg_cube_model = make_bg_cube_model(observation_table=observation_table,
data_dir=data_dir,
method=method,
do_not_force_mev_units=True)
# save
outfile = os.path.join(outdir, 'bg_cube_model_group{}'.format(group_id))
print("Writing {}".format('{}_table.fits.gz'.format(outfile)))
print("Writing {}".format('{}_image.fits.gz'.format(outfile)))
bg_cube_model.write('{}_table.fits.gz'.format(outfile),
format='table', clobber=overwrite)
bg_cube_model.write('{}_image.fits.gz'.format(outfile),
format='image', clobber=overwrite)
from pathlib import Path
from gammapy.utils.nddata import sqrt_space
from gammapy.data import DataStore
from gammapy.irf import Background2D
# ## Select off data
#
# We start by selecting the observations used to estimate the background model.
#
# In this case, we just take all "off runs" as defined in the observation table.
# In[ ]:
data_store = DataStore.from_dir("$GAMMAPY_DATA/hess-dl3-dr1")
# Select just the off data runs
obs_table = data_store.obs_table
obs_table = obs_table[obs_table["TARGET_NAME"] == "Off data"]
observations = data_store.get_observations(obs_table["OBS_ID"])
print("Number of observations:", len(observations))
# ## Background model
#
# The background model we will estimate is a differential background rate model in unit `s-1 MeV-1 sr-1` as a function of reconstructed energy and field of fiew offset.
#
# We estimate it by histogramming off data events and then smoothing a bit (not using a good method) to get a less noisy estimate. To get the differential rate, we divide by observation time and also take bin sizes into account to get the rate per energy and solid angle. So overall we fill two arrays called `counts` and `exposure` with `exposure` filled so that `background_rate = counts / exposure` will give the final background rate we're interested in.
#
# The processing can be done either one observation at a time, or first for counts and then for exposure. Either way is fine. Here we do one observation at a time, starting with empty histograms and then accumulating counts and exposure. Since this is a multi-step algorithm, we put the code to do this computation in a `BackgroundModelEstimator` class.
#
# ## Define inputs
#
# We start by defining the inputs to use for the analysis:
#
# * which data and instrument response functions to use
# * sky image geometry
# * energy band
# * maximum field of view offset cut
#
# The data (events, background models, effective area for exposure computation) consist of a few H.E.S.S. Crab observation runs as example. The background models there were produced as explained in the [background_model.ipynb](background_model.ipynb) tutorial.
# In[3]:
# What data to analyse
data_store = DataStore.from_dir('$GAMMAPY_EXTRA/test_datasets/cube/data')
# Define runlist
obs_table = Table()
obs_table['OBS_ID'] = [23523, 23526, 23592]
# There's a problem with the PSF for run 23559, so we don't use that run for now.
# In[4]:
# Define sky image
ref_image = SkyImage.empty(
nxpix=300, nypix=300, binsz=0.02,
xref=83.63, yref=22.01,
proj='TAN', coordsys='CEL',
)
def make_datasets_example():
# Define which data to use and print some information
energy_axis = MapAxis.from_edges(
np.logspace(-1.0, 1.0, 4), unit="TeV", name="energy", interp="log"
)
geom0 = WcsGeom.create(
skydir=(0, 0),
binsz=0.1,
width=(1, 1),
frame="galactic",
proj="CAR",
axes=[energy_axis],
)
geom1 = WcsGeom.create(
skydir=(1, 0),
binsz=0.1,
width=(1, 1),
frame="galactic",
proj="CAR",
axes=[energy_axis],
)
geoms = [geom0, geom1]
sources_coords = [(0, 0), (0.9, 0.1)]
names = ["gc", "g09"]
models = []
for idx, (lon, lat) in enumerate(sources_coords):
spatial_model = PointSpatialModel(
lon_0=lon * u.deg, lat_0=lat * u.deg, frame="galactic"
)
spectral_model = ExpCutoffPowerLawSpectralModel(
index=2 * u.Unit(""),
amplitude=3e-12 * u.Unit("cm-2 s-1 TeV-1"),
reference=1.0 * u.TeV,
lambda_=0.1 / u.TeV,
)
model_ecpl = SkyModel(
spatial_model=spatial_model, spectral_model=spectral_model, name=names[idx]
)
models.append(model_ecpl)
# test to link a spectral parameter
params0 = models[0].spectral_model.parameters
params1 = models[1].spectral_model.parameters
params0.link("reference", params1["reference"])
# update the sky model
models[0].parameters.link("reference", params1["reference"])
obs_ids = [110380, 111140, 111159]
data_store = DataStore.from_dir("$GAMMAPY_DATA/cta-1dc/index/gps/")
diffuse_model = SkyDiffuseCube.read(
"$GAMMAPY_DATA/fermi_3fhl/gll_iem_v06_cutout.fits"
)
datasets_list = []
for idx, geom in enumerate(geoms):
observations = data_store.get_observations(obs_ids)
stacked = MapDataset.create(geom=geom)
stacked.background_model.name = "background_irf_" + names[idx]
maker = MapDatasetMaker(offset_max=4.0 * u.deg)
for obs in observations:
dataset = maker.run(stacked, obs)
stacked.stack(dataset)
stacked.psf = stacked.psf.get_psf_kernel(
position=geom.center_skydir, geom=geom, max_radius="0.3 deg"
)
stacked.name = names[idx]
stacked.models = models[idx] + diffuse_model
datasets_list.append(stacked)
datasets = Datasets(datasets_list)
dataset0 = datasets[0]
print("dataset0")
print("counts sum : ", dataset0.counts.data.sum())
print("expo sum : ", dataset0.exposure.data.sum())
print("bkg0 sum : ", dataset0.background_model.evaluate().data.sum())
datasets.write("$GAMMAPY_DATA/tests/models", prefix="gc_example_", overwrite=True)
results["status"] = "failed"
results["n_failed_bins"] = fail_count
self.results["containment"] = results
def check_all_table_psf(data_store):
"""Check all `gammapy.irf.PSF3D` for a given `gammapy.data.DataStore`.
"""
config = {
"d_norm": 0.01,
"containment_fraction": 0.68,
"d_rel_containment": 0.7
}
obs_ids = data_store.obs_table["OBS_ID"].data
for obs_id in obs_ids[:10]:
obs = data_store.obs(obs_id=obs_id)
psf = obs.load(hdu_class="psf_table")
checker = PSF3DChecker(psf=psf, **config)
checker.check_all()
print(checker.results)
if __name__ == "__main__":
import sys
from gammapy.data import DataStore
data_store = DataStore.from_dir(sys.argv[1])
check_all_table_psf(data_store)
source_name, center, obsdir)
add_bkgmodel_to_indextable(bkg_model_directory, source_name,
obsdir)
# Make the images and psf model for different energy bands
#Energy binning
energy_reco_bins = EnergyBounds.equal_log_spacing(
input_param["energy binning"]["Emin"],
input_param["energy binning"]["Emax"],
input_param["energy binning"]["nbin"], 'TeV')
outdir = make_outdir(source_name, name_bkg, len(energy_reco_bins),
config_name, image_size, for_integral_flux, use_cube,
use_etrue)
offset_band = Angle([0, 2.49], 'deg')
data_store = DataStore.from_dir(obsdir)
exclusion_mask = SkyMask.read(input_param["general"]["exclusion_mask"])
obs_table_subset = data_store.obs_table[0:nobs]
# Cette observetion n est pas utilise par gammapy car cette observation est centre sur le Crab donc ne peut pas trouve de reflected region...
if ((source_name == "Crab") | (source_name == "Crab_Test")):
i_remove = np.where(obs_table_subset["OBS_ID"] == 18373)
if len(i_remove[0]) != 0:
obs_table_subset.remove_row(i_remove[0][0])
if use_cube:
energy_reco = [
Energy(input_param["energy binning"]["Emin"], "TeV"),
Energy(input_param["energy binning"]["Emax"], "TeV"),
input_param["energy binning"]["nbin"]
]
if use_etrue:
def make_reco_model():
"""Make a reco bg cube model."""
METHOD = 'default'
data_dir = 'test_dataset'
overwrite = OVERWRITE
test = TEST
group_id = GROUP_ID
# create output folder
outdir = os.path.join(OUTDIR, 'reco')
_create_dir(outdir, overwrite)
# 0. create dummy observation grouping
obs_groups = create_dummy_observation_grouping()
# save
outfile = os.path.join(outdir, 'bg_observation_groups.ecsv')
print('Writing {}'.format(outfile, overwrite=overwrite))
obs_groups.write(outfile)
# 1. create dummy dataset
# use enough stats so that rebinning (and resmoothing?) doesn't take place
n_obs = 100
if test:
# run fast
n_obs = 2
az_range = AZ_RANGE
alt_range = ALT_RANGE
random_state = np.random.RandomState(seed=0)
sigma = SIGMA
spectral_index = INDEX
make_test_dataset(outdir=data_dir,
overwrite=overwrite,
observatory_name='HESS',
n_obs=n_obs,
az_range=az_range,
alt_range=alt_range,
date_range=(Time('2010-01-01T00:00:00',
format='isot',
scale='utc'),
Time('2015-01-01T00:00:00',
format='isot',
scale='utc')),
n_tels_range=(3, 4),
sigma=sigma,
spectral_index=spectral_index,
random_state=random_state)
# 2. get observation table
data_store = DataStore.from_dir(dir=data_dir)
observation_table = data_store.make_observation_table()
outfile = os.path.join(
outdir, 'bg_observation_table_group{}.fits.gz'.format(group_id))
print("Writing {}".format(outfile))
observation_table.write(outfile, overwrite=overwrite)
# 3. build bg model
method = METHOD
bg_cube_model = make_bg_cube_model(observation_table=observation_table,
data_dir=data_dir,
method=method,
do_not_force_mev_units=True)
# save
outfile = os.path.join(outdir, 'bg_cube_model_group{}'.format(group_id))
print("Writing {}".format('{}_table.fits.gz'.format(outfile)))
print("Writing {}".format('{}_image.fits.gz'.format(outfile)))
bg_cube_model.write('{}_table.fits.gz'.format(outfile),
format='table',
clobber=overwrite)
bg_cube_model.write('{}_image.fits.gz'.format(outfile),
format='image',
clobber=overwrite)
from gammapy.cube.models import SkyModel, BackgroundModel
from gammapy.spectrum.models import PowerLaw
from gammapy.spectrum import create_crab_spectral_model
from gammapy.image.models import SkyPointSource
from gammapy.detect import compute_lima_on_off_image
from gammapy.scripts import SpectrumAnalysisIACT
from gammapy.utils.fitting import Fit
from gammapy.background import RingBackgroundEstimator
# ## Data access
#
# To access the data, we use the `DataStore`, and we use the ``obs_table`` to select the Crab runs.
# In[ ]:
data_store = DataStore.from_file(
"$GAMMAPY_DATA/hess-dl3-dr1/hess-dl3-dr3-with-background.fits.gz")
mask = data_store.obs_table["TARGET_NAME"] == "Crab"
obs_table = data_store.obs_table[mask]
observations = data_store.get_observations(obs_table["OBS_ID"])
# In[ ]:
# pos_crab = SkyCoord.from_name('Crab')
pos_crab = SkyCoord(83.633, 22.014, unit="deg")
# ## Maps
#
# Let's make some 3D cubes, as well as 2D images.
#
# For the energy, we make 5 bins from 1 TeV to 10 TeV.
def data_store():
return DataStore.from_dir("$GAMMAPY_DATA/hess-dl3-dr1/")
print("\n")
print("CHECK PACKAGE VERSION ########")
print('gammapy:', gammapy.__version__)
print('numpy:', np.__version__)
print('astropy:', astropy.__version__)
print('regions:', regions.__version__)
print('sherpa:', sherpa.__version__)
print('uncertainties:', uncertainties.__version__)
print('photutils:', photutils.__version__)
print("##############################\n")
###metti all al posto di gps o cambia all in extragalactic survey
data_store = DataStore.from_dir('/Users/lucatosti/Desktop/GEMINGA/1dc/index/gps') #### oggetto generale tipo database per coordinate
#data_store = DataStore.from_dir('$GAMMAPY_EXTRA/datasets/hess-crab4-hd-hap-prod2/')
data_store.info()
show_it=True
# in generale selezione osservazioni---->>> funziona anche direttamente SkyCoord.from_name('crab') --->>>metti geminga
# from astropy.coordinates import SkyCoord
# table = data_store.obs_table
# pos_obs = SkyCoord(table['GLON_PNT'], table['GLAT_PNT'], frame='galactic', unit='deg')
# pos_target = SkyCoord(0, 0, frame='galactic', unit='deg')
# offset = pos_target.separation(pos_obs).deg
# mask = (1 < offset) & (offset < 2)
# table = table[mask]
# table.show_in_browser(jsviewer=True)
def observations_hess_dl3():
"""HESS DL3 observation list."""
datastore = DataStore.from_dir("$GAMMAPY_DATA/hess-dl3-dr1/")
obs_ids = [23523, 23526]
return datastore.get_observations(obs_ids)
# Configure the logger, so that the spectral analysis
# isn't so chatty about what it's doing.
import logging
logging.basicConfig()
log = logging.getLogger('gammapy.spectrum')
log.setLevel(logging.ERROR)
# ## Select observations
#
# Like explained in [cta_1dc_introduction.ipynb](cta_1dc_introduction.ipynb), a Gammapy analysis usually starts by creating a `DataStore` and selecting observations.
#
# This is shown in detail in the other notebook, here we just pick three observations near the galactic center.
# In[5]:
data_store = DataStore.from_dir('$CTADATA/index/gps')
# In[6]:
# Just as a reminder: this is how to select observations
# from astropy.coordinates import SkyCoord
# table = data_store.obs_table
# pos_obs = SkyCoord(table['GLON_PNT'], table['GLAT_PNT'], frame='galactic', unit='deg')
# pos_target = SkyCoord(0, 0, frame='galactic', unit='deg')
# offset = pos_target.separation(pos_obs).deg
# mask = (1 < offset) & (offset < 2)
# table = table[mask]
# table.show_in_browser(jsviewer=True)
# In[7]:
#
# For 1DC there is one set of index files per simulated dataset, as well as a set of index files listing all available data in the all directory.
# In[ ]:
get_ipython().system('(cd $GAMMAPY_DATA/cta-1dc && tree index)')
# ### Gammapy DataStore
#
# If you want to access data and IRFs from the CTA 1DC GPS dataset, just create a `DataStore` by pointing at a folder where the index files are located.
# In[ ]:
from gammapy.data import DataStore
data_store = DataStore.from_dir("$GAMMAPY_DATA/cta-1dc/index/gps")
# If you want to access all CTA DC-1 data,
# set the CTADATA env var and use this:
# data_store = DataStore.from_dir("$CTADATA/index/gps")
# Or point at the directly with the index files directly
# In[ ]:
# Print out some basic information about the available data:
data_store.info()
# In[ ]:
# The observation index is loaded as a table
print("Number of observations: ", len(data_store.obs_table))
"""Add phase for two obs on Vela pulsar from CTA DC-1"""
import numpy as np
import astropy.units as u
from astropy.time import Time
from astropy.coordinates import SkyCoord
from gammapy.data import DataStore
###########################################################################
####################### Extracting Vela files ###########################
###########################################################################
# Load the data store (contains the information about all the DC1 data)
# Assumes you have an environment variable CTADATA set pointing to the DC1 folder
data_store = DataStore.from_dir('$CTADATA/index/gps')
table = data_store.obs_table
# Defining the offset as the angular separation between the observation position and the target position
pos_obs = SkyCoord(table['GLON_PNT'], table['GLAT_PNT'], frame='galactic', unit='deg')
pos_target = SkyCoord.from_name('vela')
offset = pos_target.separation(pos_obs)
# Defining a mask to select all runs targeting Vela with an offset < 2 deg
mask = (offset < 2 * u.deg)
# Applying the mask
table = table[mask]
# Getting the list of observation indices of Vela
obs_ids = table['OBS_ID']
"""Example how to compute and plot reflected regions."""
import numpy as np
import astropy.units as u
from astropy.coordinates import SkyCoord
from regions import RectangleSkyRegion
import matplotlib.pyplot as plt
from gammapy.data import DataStore
from gammapy.datasets import SpectrumDataset
from gammapy.makers import ReflectedRegionsBackgroundMaker, SpectrumDatasetMaker
from gammapy.maps import Map, MapAxis
from gammapy.visualization import plot_spectrum_datasets_off_regions
data_store = DataStore.from_dir("$GAMMAPY_DATA/hess-dl3-dr1/")
mask = data_store.obs_table["TARGET_NAME"] == "Crab"
obs_ids = data_store.obs_table["OBS_ID"][mask].data
observations = data_store.get_observations(obs_ids)
crab_position = SkyCoord(83.63, 22.01, unit="deg", frame="icrs")
# The ON region center is defined in the icrs frame. The angle is defined w.r.t. to its axis.
rectangle = RectangleSkyRegion(center=crab_position,
width=0.5 * u.deg,
height=0.4 * u.deg,
angle=0 * u.deg)
bkg_maker = ReflectedRegionsBackgroundMaker(min_distance=0.1 * u.rad)
dataset_maker = SpectrumDatasetMaker(selection=["counts"])
e_reco = MapAxis.from_energy_bounds(0.1, 100, 30, unit="TeV")
dataset_empty = SpectrumDataset.create(e_reco=e_reco, region=rectangle)
def observations():
data_store = DataStore.from_dir("$GAMMAPY_DATA/hess-dl3-dr1/")
run_list = [23523, 23526]
return Observations([data_store.obs(_) for _ in run_list])
log.basicConfig(level=log.INFO)
import numpy as np
from astropy.wcs import WCS
from astropy.units import Quantity
from astropy.io import fits
from astropy.coordinates import SkyCoord
from gammapy.data import DataStore
from gammapy.cube import exposure_cube, SpectralCube
from gammapy.utils.energy import EnergyBounds
dirname = '$GAMMAPY_EXTRA/datasets/hess-crab4-hd-hap-prod2'
log.info('Reading data from {}'.format(dirname))
data_store = DataStore.from_dir(dirname)
events = data_store.load(obs_id=23523, filetype='events')
log.info('Number of events in event list: {}'.format(len(events)))
log.info('Max. event energy: {}'.format(events['ENERGY'].max()))
log.info('Min. event energy: {}'.format(events['ENERGY'].min()))
aeff = data_store.load(obs_id=23523, filetype='aeff')
counts = SpectralCube.empty(emin=0.5, emax=80, enbins=8, eunit='TeV',
nxpix=200, nypix=200, xref=events.meta['RA_OBJ'],
yref=events.meta['DEC_OBJ'], dtype='int',
coordsys='CEL')
log.info('Bin events into cube.')
counts.fill(events)
log.info('Counts cube shape: {}'.format(counts.data.shape))
from gammapy.image import SkyImage
from gammapy.spectrum import models
from regions import CircleSkyRegion
from astropy.coordinates import SkyCoord
import astropy.units as u
import logging
logging.basicConfig()
log = logging.getLogger('gammapy.spectrum')
log.setLevel(logging.ERROR)
print("\nlog created")
obs_cols = ['OBS_ID', 'GLON_PNT', 'GLAT_PNT']
#store_dir = '/Users/lucatosti/gammapy-extra/datasets/hess-crab4-hd-hap-prod2'
store_dir = '/Users/lucatosti/Desktop/GEMINGA/1dc/index/all'
data_store = DataStore.from_dir(store_dir)
data_store.info()
table = data_store.obs_table
pos_obs = SkyCoord(table['GLON_PNT'],
table['GLAT_PNT'],
frame='galactic',
unit='deg')
crab_pos = SkyCoord.from_name('crab', frame='galactic')
#crab_pos = SkyCoord( 0 , 0 ,unit='deg', frame='galactic')#184.5575 , -05.7844
offset = crab_pos.separation(pos_obs).deg
#print(offset)
#if(offset.any()<10):
# print("qualcuno")
mask = (offset < 0.5) #(1 < offset) & (offset < 2)
"""
from astropy.coordinates import SkyCoord, Angle
from gammapy.datasets import gammapy_extra
from gammapy.image import ExclusionMask
from gammapy.data import DataStore
from gammapy.region import SkyCircleRegion
from gammapy.spectrum import SpectrumAnalysis
from gammapy.utils.energy import EnergyBounds
center = SkyCoord(83.63, 22.01, unit='deg', frame='icrs')
radius = Angle('0.3 deg')
on_region = SkyCircleRegion(pos=center, radius=radius)
bkg_method = dict(type='reflected', n_min=3)
exclusion_file = gammapy_extra.filename("datasets/exclusion_masks/"
"tevcat_exclusion.fits")
excl = ExclusionMask.from_fits(exclusion_file)
bounds = EnergyBounds.equal_log_spacing(1, 10, 40, unit='TeV')
store = gammapy_extra.filename("datasets/hess-crab4")
ds = DataStore.from_dir(store)
obs = [23523, 23559]
ana = SpectrumAnalysis(datastore=ds, obs=obs, on_region=on_region,
bkg_method=bkg_method, exclusion=excl, ebounds=bounds)
ana.write_ogip_data(outdir='ogip_data')
import matplotlib.pyplot as plt
import numpy as np
import astropy
import regions
import sherpa
import astropy.units as u
from astropy.coordinates import SkyCoord, Angle
from astropy.table import Table
from regions import CircleSkyRegion
from gammapy.data import DataStore
from gammapy.image import SkyImage, IACTBasicImageEstimator, SkyImageList
from gammapy.background import FoVBackgroundEstimator
from importlib import reload
datastore = DataStore.from_dir("/Users/asinha/HESS_newbkg")
name = "LMC"
src = SkyCoord.from_name(name)
myid = np.loadtxt("LMC_id.txt")
mylist = datastore.obs_list(myid)
ref_image = SkyImage.empty(
nxpix=400,
nypix=400,
binsz=0.05,
xref=src.galactic.l.value,
yref=src.galactic.b.value,
coordsys='GAL',
proj='TAN',
)
src_names = ["LMC N132D", "30 Dor C", "LHA 120-N 157B", "LMC P3"]
"""Example how to load and take a peek at an IACT observation.
"""
import matplotlib.pyplot as plt
from gammapy.data import DataStore
from gammapy.utils.mpl_style import gammapy_mpl_style
# TODO: Update once this issue is resolved:
# https://github.com/astropy/astropy/issues/4140
# plt.style.use(gammapy_mpl_style)
plt.rcParams.update(gammapy_mpl_style)
fig, axes = plt.subplots(2, 4, figsize=(20, 8))
axes = axes.flat
data_store = DataStore.from_dir('$GAMMAPY_EXTRA/datasets/hess-crab4-hd-hap-prod2')
obs = data_store.obs(obs_id=23523)
obs.events.peek()
obs.aeff.plot_energy_dependence(ax=next(axes))
obs.aeff.plot_offset_dependence(ax=next(axes))
aeff = obs.aeff.to_effective_area_table(offset='1 deg')
# import IPython; IPython.embed()
aeff.plot(ax=next(axes))
obs.edisp.plot_bias(ax=next(axes))
obs.edisp.plot_migration(ax=next(axes))
edisp = obs.edisp.to_energy_dispersion(offset='1 deg')
edisp.plot_matrix(ax=next(axes))
def observations():
"""Example observation list for testing."""
datastore = DataStore.from_dir("$GAMMAPY_DATA/hess-dl3-dr1")
obs_ids = [23523, 23526]
return datastore.get_observations(obs_ids)
# In[3]:
# We only need to import the `DataStore`,
# all other data objects can be loaded via the data store.
from gammapy.data import DataStore
import astropy.units as u
# ## Data store
#
# First, we need to select some observations for our spectral analysis. To this end we use the [data management](http://docs.gammapy.org/dev/data/dm.html) functionality in gammapy. The following example uses a simulated crab dataset in [gammapy-extra](https://github.com/gammapy/gammapy-extra). Ideally, we'd use crabs runs from the H.E.S.S. public data release, so if you have the released files just change the ``DATA_DIR`` variable to the corresponding folder.
# In[4]:
# data_store = DataStore.from_dir('$GAMMAPY_EXTRA/datasets/hess-crab4-hd-hap-prod2/')
data_store = DataStore.from_dir('$GAMMAPY_EXTRA/test_datasets/cta_1dc')
# In[5]:
data_store.info()
# In[6]:
print(data_store.hdu_table.colnames)
data_store.hdu_table[:7]
# ## Observation selection
#
# Select observations using the observation table
# In[7]:
import matplotlib.pyplot as plt
from gammapy.data import DataStore
ds = DataStore.from_dir('$GAMMAPY_EXTRA/datasets/hess-crab4-hd-hap-prod2')
events = ds.obs(obs_id=23523).events
events.plot_time_map()
plt.show()