def input_map(file_map):
import pycfitsio
f = pycfitsio.open(file_map)
map = f[f.HDUs.keys()[0]].read_column(0)
f.close()
return map
def get_ahf_wobble(obtx):
"""Read psi1 and psi2 file previously extracted from observation AHF files"""
filename = sorted(glob.glob(private.cal_folder + '/WDX9/*.fits'))[-1]
l.info(filename)
with pycfitsio.open(filename) as fitsfile:
obt = fitsfile['OBT'].read_column(0)/2.**16 + 20 #shift forward of 20 seconds, so that the abrupt change in wobble angle is within the manouvre and does not impact the pointing between the last AHF quaternion and the manouvre
psi1 = arcmin2rad(fitsfile['PSI_1'].read_column(0))
psi2 = arcmin2rad(fitsfile['PSI_2'].read_column(0))
# reproduce dpc dx9
#psi1[1:] = psi1[0:-1]
#psi2[1:] = psi2[0:-1]
i_interp = np.interp(obtx, obt, np.arange(len(obt)))
i_rounded = np.floor(i_interp).astype(np.int)
return psi1[i_rounded], psi2[i_rounded]
from pointingtools import compute_parallactic_angle, altaz2ha
import pycfitsio as fits
import ephem
def freq2wavelength(freq):
"""Freq [GHz] to wavelength [microns]"""
return constants.c / freq / 1e3
freq = 10
mag = True
pointing_filename = 'data/all_%dghz_pointing.fits' % freq
if mag:
pointing_filename = pointing_filename.replace('.fits','_mag.fits')
pointing_file = fits.open(pointing_filename)
channels = list(set([int(c.translate(None, 'AZEL')) for c in pointing_file[0].dtype.names if c != 'UT']))
data_file = fits.open('data/all_%dGHz_data_cal.fits' % freq)
servo_file = fits.open('data/utservo.fits')
# pointing channel is the column in the pointing file
MISSIONSTART = 16.8 #from altitude
MISSIONEND = 36.76 #from issue with latitude
#MISSIONEND = 16.8 + 1./60
#first sun xsing
#MISSIONSTART = 17 + 9/60.
#MISSIONEND = 17 + 13/60.
START_DATE = datetime.datetime(2011, 9, 17)
from pointingtools import compute_parallactic_angle, altaz2ha
import pycfitsio as fits
import ephem
def freq2wavelength(freq):
"""Freq [GHz] to wavelength [microns]"""
return constants.c / freq / 1e3
freq = 10
mag = True
pointing_filename = 'data/all_%dghz_pointing.fits' % freq
if mag:
pointing_filename = pointing_filename.replace('.fits','_mag.fits')
pointing_file = fits.open(pointing_filename)
channels = list(set([int(c.translate(None, 'AZEL')) for c in pointing_file[0].dtype.names if c != 'UT']))
data_file = fits.open('data/all_%dGHz_data_cal.fits' % freq)
servo_file = fits.open('data/utservo.fits')
# pointing channel is the column in the pointing file
MISSIONSTART = 16.8 #from altitude
MISSIONEND = 36.76 #from issue with latitude
#MISSIONEND = 16.8 + 1./60
#first sun xsing
#MISSIONSTART = 17 + 9/60.
#MISSIONEND = 17 + 13/60.
START_DATE = datetime.datetime(2011, 9, 17)
def __init__(
self,
obt,
coord="G",
horn_pointing=False,
deaberration=True,
wobble=True,
interp="slerp",
siamfile=None,
wobble_offset=0,
ptcorfile=None,
Pxx=False,
instrument_db=None,
):
"""
nointerp to use the AHF OBT stamps"""
l.warning("Pointing setup, coord:%s, deab:%s, wobble:%s" % (coord, deaberration, wobble))
# get ahf limits
self.Pxx = Pxx
self.deaberration = deaberration
self.wobble = wobble
filenames = AHF_btw_OBT(obt)
files = [pycfitsio.open(f) for f in filenames]
l.debug("reading files %s" % str(files))
AHF_data_iter = [f[0] for f in files]
l.debug("reading files")
ahf_obt = np.concatenate([h.read_column("OBT_SPL") for h in AHF_data_iter])
ahf_obt /= 2.0 ** 16
i_start = max(ahf_obt.searchsorted(obt[0]) - 1, 0)
i_end = min(ahf_obt.searchsorted(obt[-1]) + 1, len(ahf_obt) - 1)
ahf_obt = ahf_obt[i_start:i_end]
ahf_quat = np.empty((len(ahf_obt), 4))
for i, c in enumerate(self.comp):
ahf_quat[:, i] = np.concatenate([h.read_column("QUATERNION_" + c) for h in AHF_data_iter])[i_start:i_end]
# debug_here()
if self.wobble:
# ahf_quat = qarray.mult(ahf_quat, correction.wobble(ahf_obt,offset=wobble_offset))
# DX8 wobble angle correction
wob = correction.ahf_wobble(ahf_obt)
ahf_quat = qarray.mult(ahf_quat, wob)
# print(wob[17320:17335])
# print(ahf_obt[17329])
# 34690:34705
qarray.norm_inplace(ahf_quat)
if ptcorfile == True:
ptcorfile = private.ptcorfile
if ptcorfile:
ahf_quat = qarray.mult(ahf_quat, correction.ptcor(ahf_obt, ptcorfile))
if coord == "G":
ahf_quat = quaternion_ecl2gal(ahf_quat)
if interp is None:
self.qsatgal_interp = ahf_quat
# save AHF obt for later interpolation
self.ahf_obt = ahf_obt
else:
l.info("Interpolating quaternions with %s" % interp)
interpfunc = getattr(qarray, interp)
self.qsatgal_interp = interpfunc(obt, ahf_obt, ahf_quat)
# if self.wobble:
# self.qsatgal_interp = qarray.mult(self.qsatgal_interp, correction.wobble(obt))
# qarray.norm_inplace(self.qsatgal_interp)
l.info("Quaternions interpolated")
self.siam = IDBSiam(instrument_db, obt, self.Pxx)
self.obt = obt
self.coord = coord
l.debug("Closing AHF files")
for f in files:
f.close()
def get_ang(self, ch):
l.debug("Reading %s" % self.filename)
with pycfitsio.open(self.filename) as f:
h = f[ch.tag]
return h.read_column("THETA"), h.read_column("PHI")
def get_ang(self, ch):
l.debug('Reading %s' % self.filename)
with pycfitsio.open(self.filename) as f:
h = f[ch.tag]
return h.read_column('THETA'), h.read_column('PHI')
