Ejemplo n.º 1
0
 def __call__(self, data, state):
     # get parameters
     C = state.get('compression')
     factor = state.get('compression_factor', 1)
     # decompress
     uc_data = uncompress(data, C, factor)
     uc_data.mask = state['mask']
     # filter
     uc_data = tm.filter_median(uc_data, length=self.filter_length)
     tm.deglitch_l2mad(uc_data, state['model'])
     # define mask
     masking = tm.Masking(uc_data.mask)
     # update model
     state['deglitching_mask'] = uc_data.mask
     state['deglitching_mask_lo'] = masking
     state['model'] = masking * state['model']
     state['deglitching_filter_length'] = self.filter_length
     return data
Ejemplo n.º 2
0
                                            npixels_per_sample=5)
multiplexing = CompressionAverageOperator(1)
crosstalk    = IdentityOperator()
compression  = CompressionAverageOperator(4)

model = compression * crosstalk * multiplexing * projection * telescope

# read the Tod off the disk
tod40Hz = pacs.get_tod(flatfielding=True, subtraction_mean=True)

# remove drift
tod40Hz_filtered = filter_polynomial(tod40Hz, 6)
drift = tod40Hz - tod40Hz_filtered

tod40Hz = filter_median(tod40Hz_filtered, 10000)

# second level deglitching
tod40Hz.mask = deglitch_l2mad(tod40Hz, projection, nsigma=5)

idetector=5
plot_tod((tod40Hz+drift)[idetector])
plot(drift[idetector], 'r')

masking   = MaskOperator(tod40Hz.mask)
model40Hz = masking * projection
map_naive40Hz = mapper_naive(tod40Hz, model40Hz)

map_naive40Hz.imshow()
# clim doesn't work anymore with AnnotatedImage
#clim(-0.00002,0.00002)
Ejemplo n.º 3
0
tod = obs.get_tod()
header = obs.get_map_header()
header.update('CDELT1', resolution / 3600)
header.update('CDELT2', resolution / 3600)
npix = 5
good_npix = False
projection = tm.Projection(obs, header=header,
                           resolution=resolution,
                           oversampling=False,
                           npixels_per_sample=npix)
model = projection
#C = csh.averaging(tod.shape, factor=factor)
compression_shape = [tod.size / factor, tod.size, ]
C = tm.CompressionAverage(compression_factor=factor).aslinearoperator(compression_shape)
C = lo.aslinearoperator(C)
# compress data
ctod = compress(tod, C, factor)
# uncompress for preprocessing
uctod = uncompress(ctod, C, factor)
# XXX need mask ...
uctod.mask = tod.mask
# deglitching
uctod = tm.filter_median(uctod, length=10)
uctod.mask = tm.deglitch_l2mad(uctod, projection)
masking = tm.Masking(uctod.mask)
model = masking * projection
# filtering
ctod = tm.filter_median(ctod, length=filter_length / factor)
cov = noise_covariance(ctod, obs)
S = cov.aslinearoperator()
Ejemplo n.º 4
0
pacs = tm.PacsObservation(filename=filenames, 
                       fine_sampling_factor=1, keep_bad_detectors=False)
# reset pacs header to have a shape multiple of 4
#header = pacs.get_map_header()
#header['NAXIS1'] = 192
#header['NAXIS2'] = 192
#header['CRPIX1'] = 96
#header['CRPIX2'] = 96
# data
tod = pacs.get_tod()
# remove bad pixels (by updating mask !)
#tod = remove_bad_pixels(tod)
# deglitching
#projection = tm.Projection(pacs, header=header, resolution=3., npixels_per_sample=6)
projection = tm.Projection(pacs, resolution=3., npixels_per_sample=6)
tm.deglitch_l2mad(tod, projection)
# model
masking = tm.Masking(tod.mask)
model = masking * projection
# remove drift
tod = tm.filter_median(tod, length=999)

model = masking * projection
# naive map
backmap = model.transpose(tod)
# coverage map
weights = model.transpose(tod.ones(tod.shape))
# mask on map
mask = weights == 0
M = lo.mask(mask)
# preconditionner
Ejemplo n.º 5
0
# compress data
factor = 8
compression = tm.CompressionAverage(factor)
C = lo.aslinearoperator(
    compression.aslinearoperator(shape=(tod.size / factor, tod.size)))
ctod = compression.direct(tod)
# uncompress for deglitching
uctod = tod.copy(tod.shape)
y0, t = lo.spl.cgs(C.T * C, C.T * ctod.flatten())
uctod[:] = y0.reshape(tod.shape)
# deglitching
projection = tm.Projection(pacs,
                           header=header,
                           resolution=3.,
                           npixels_per_sample=5)
uctod.mask = tm.deglitch_l2mad(uctod, projection)
ctod = compression.direct(uctod)
# model
masking = tm.Masking(uctod.mask)
model = compression * masking * projection
# remove drift
#ctod = tm.filter_median(ctod, length=3000 / 8.)
# first map
M = lo.aslinearoperator(model.aslinearoperator())
#P = lo.aslinearoperator(projection.aslinearoperator())
#C = csh.averaging(tod.shape, factor=8)
#I = lo.mask(uctod.mask)
#M = C * I.T * I * P
#M = C * P
backmap = model.transpose(ctod)
weights = model.transpose(ctod.ones(ctod.shape))
Ejemplo n.º 6
0
projection = pacs.get_projection_operator(resolution=3.2, npixels_per_sample=5)
multiplexing = CompressionAverageOperator(1)
crosstalk = IdentityOperator()
compression = CompressionAverageOperator(4)

model = compression * crosstalk * multiplexing * projection * telescope

# read the Tod off the disk
tod40Hz = pacs.get_tod(flatfielding=True, subtraction_mean=True)

# remove drift
tod40Hz_filtered = filter_polynomial(tod40Hz, 6)
drift = tod40Hz - tod40Hz_filtered

tod40Hz = filter_median(tod40Hz_filtered, 10000)

# second level deglitching
tod40Hz.mask = deglitch_l2mad(tod40Hz, projection, nsigma=5)

idetector = 5
plot_tod((tod40Hz + drift)[idetector])
plot(drift[idetector], 'r')

masking = MaskOperator(tod40Hz.mask)
model40Hz = masking * projection
map_naive40Hz = mapper_naive(tod40Hz, model40Hz)

map_naive40Hz.imshow()
# clim doesn't work anymore with AnnotatedImage
#clim(-0.00002,0.00002)
Ejemplo n.º 7
0
                          fine_sampling_factor=1,
                          keep_bad_detectors=False)
# reset pacs header to have a shape multiple of 4
#header = pacs.get_map_header()
#header['NAXIS1'] = 192
#header['NAXIS2'] = 192
#header['CRPIX1'] = 96
#header['CRPIX2'] = 96
# data
tod = pacs.get_tod()
# remove bad pixels (by updating mask !)
#tod = remove_bad_pixels(tod)
# deglitching
#projection = tm.Projection(pacs, header=header, resolution=3., npixels_per_sample=6)
projection = tm.Projection(pacs, resolution=3., npixels_per_sample=6)
tm.deglitch_l2mad(tod, projection)
# model
masking = tm.Masking(tod.mask)
model = masking * projection
# remove drift
tod = tm.filter_median(tod, length=999)

model = masking * projection
# naive map
backmap = model.transpose(tod)
# coverage map
weights = model.transpose(tod.ones(tod.shape))
# mask on map
mask = weights == 0
M = lo.mask(mask)
# preconditionner