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Commit 18700088 authored by Zhang Xin's avatar Zhang Xin
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add new psf convolve for single source; fix header bug

parent df15b1ac
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observation_sim/config/header/ImageHeader.py
View file @ 18700088
...@@ -434,7 +434,7 @@ def generatePrimaryHeader(xlen=9216, ylen=9232, pointing_id='00000001', pointing ...@@ -434,7 +434,7 @@ def generatePrimaryHeader(xlen=9216, ylen=9232, pointing_id='00000001', pointing
co = coord.SkyCoord(ra, dec, unit='deg') co = coord.SkyCoord(ra, dec, unit='deg')
ra_hms = format(co.ra.hms.h, '02.0f') + format(co.ra.hms.m, ra_hms = format(co.ra.hms.h, '02.0f') + format(co.ra.hms.m,
'02.0f') + format(co.ra.hms.s, '02.1f') '02.0f') + format(co.ra.hms.s, '04.1f')
dec_hms = format(co.dec.dms.d, '02.0f') + format(abs(co.dec.dms.m), dec_hms = format(co.dec.dms.d, '02.0f') + format(abs(co.dec.dms.m),
'02.0f') + format(abs(co.dec.dms.s), '02.0f') '02.0f') + format(abs(co.dec.dms.s), '02.0f')
if dec >= 0: if dec >= 0:
......
observation_sim/mock_objects/MockObject.py
View file @ 18700088
...@@ -120,7 +120,6 @@ class MockObject(object): ...@@ -120,7 +120,6 @@ class MockObject(object):
if self.logger: if self.logger:
self.logger.error(e) self.logger.error(e)
return 2, None return 2, None
# Set Galsim Parameters # Set Galsim Parameters
if self.getMagFilter(filt) <= 15: if self.getMagFilter(filt) <= 15:
folding_threshold = 5.e-4 folding_threshold = 5.e-4
...@@ -241,11 +240,10 @@ class MockObject(object): ...@@ -241,11 +240,10 @@ class MockObject(object):
def addSLStoChipImageWithPSF(self, sdp=None, chip=None, pos_img_local=[1, 1], psf_model=None, bandNo=1, grating_split_pos=3685, local_wcs=None, pos_img=None): def addSLStoChipImageWithPSF(self, sdp=None, chip=None, pos_img_local=[1, 1], psf_model=None, bandNo=1, grating_split_pos=3685, local_wcs=None, pos_img=None):
spec_orders = sdp.compute_spec_orders() spec_orders = sdp.compute_spec_orders()
pos_shear = galsim.Shear(e=0., beta=(np.pi/2)*galsim.radians)
if chip.slsPSFOptim: if chip.slsPSFOptim:
for k, v in spec_orders.items(): for k, v in spec_orders.items():
img_s = v[0] img_s = v[0]
pos_shear = galsim.Shear(e=0., beta=(np.pi/2)*galsim.radians)
nan_ids = np.isnan(img_s) nan_ids = np.isnan(img_s)
if img_s[nan_ids].shape[0] > 0: if img_s[nan_ids].shape[0] > 0:
...@@ -280,47 +278,80 @@ class MockObject(object): ...@@ -280,47 +278,80 @@ class MockObject(object):
else: else:
for k, v in spec_orders.items(): for k, v in spec_orders.items():
img_s = v[0] # img_s = v[0]
# print(bandNo,k) # # print(bandNo,k)
try: # try:
psf, pos_shear = psf_model.get_PSF( # psf, pos_shear = psf_model.get_PSF(
chip, pos_img_local=pos_img_local, bandNo=bandNo, galsimGSObject=True, g_order=k, grating_split_pos=grating_split_pos) # chip, pos_img_local=pos_img_local, bandNo=bandNo, galsimGSObject=True, g_order=k, grating_split_pos=grating_split_pos)
except: # except:
psf, pos_shear = psf_model.get_PSF(chip=chip, pos_img=pos_img) # psf, pos_shear = psf_model.get_PSF(chip=chip, pos_img=pos_img)
# psf_img = psf.drawImage(nx=100, ny=100, wcs=local_wcs)
# psf_img_m = psf_img.array
# #########################################################
# # DEBUG
# #########################################################
# # ids_p = psf_img_m < 0
# # psf_img_m[ids_p] = 0
# # from astropy.io import fits
# # fits.writeto(str(bandNo) + '_' + str(k) + '_psf.fits', psf_img_m)
# # print("DEBUG: orig_off is", orig_off)
# nan_ids = np.isnan(img_s)
# if img_s[nan_ids].shape[0] > 0:
# img_s[nan_ids] = 0
# print("DEBUG: specImg nan num is", img_s[nan_ids].shape[0])
# #########################################################
# img_s, orig_off = convolveImg(img_s, psf_img_m)
# origin_order_x = v[1] - orig_off[0]
# origin_order_y = v[2] - orig_off[1]
psf_img = psf.drawImage(nx=100, ny=100, wcs=local_wcs) # specImg = galsim.ImageF(img_s)
# # photons = galsim.PhotonArray.makeFromImage(specImg)
# # photons.x += origin_order_x
# # photons.y += origin_order_y
psf_img_m = psf_img.array # # xlen_imf = int(specImg.xmax - specImg.xmin + 1)
# # ylen_imf = int(specImg.ymax - specImg.ymin + 1)
# # stamp = galsim.ImageF(xlen_imf, ylen_imf)
# # stamp.wcs = local_wcs
# # stamp.setOrigin(origin_order_x, origin_order_y)
######################################################### # specImg.wcs = local_wcs
# DEBUG # specImg.setOrigin(origin_order_x, origin_order_y)
#########################################################
# ids_p = psf_img_m < 0
# psf_img_m[ids_p] = 0
# from astropy.io import fits print('DEBUG: BEGIN -----------',bandNo,k)
# fits.writeto(str(bandNo) + '_' + str(k) + '_psf.fits', psf_img_m)
img_s = v[0]
# print("DEBUG: orig_off is", orig_off)
nan_ids = np.isnan(img_s) nan_ids = np.isnan(img_s)
if img_s[nan_ids].shape[0] > 0: if img_s[nan_ids].shape[0] > 0:
img_s[nan_ids] = 0 img_s[nan_ids] = 0
print("DEBUG: specImg nan num is", img_s[nan_ids].shape[0]) print("DEBUG: specImg nan num is", img_s[nan_ids].shape[0])
######################################################### #########################################################
origin_order_x = v[1]
origin_order_y = v[2]
specImg = galsim.ImageF(img_s)
specImg.wcs = local_wcs
specImg.setOrigin(origin_order_x, origin_order_y)
try:
specImg = psf_model.get_PSF_AND_convolve_withsubImg(chip, cutImg=specImg, bandNo=bandNo, g_order=k, grating_split_pos=grating_split_pos)
except:
psf, pos_shear = psf_model.get_PSF(chip=chip, pos_img=pos_img)
psf_img = psf.drawImage(nx=100, ny=100, wcs=local_wcs)
psf_img_m = psf_img.array
img_s, orig_off = convolveImg(img_s, psf_img_m) img_s, orig_off = convolveImg(img_s, psf_img_m)
origin_order_x = v[1] - orig_off[0] origin_order_x = v[1] - orig_off[0]
origin_order_y = v[2] - orig_off[1] origin_order_y = v[2] - orig_off[1]
specImg = galsim.ImageF(img_s) specImg = galsim.ImageF(img_s)
# photons = galsim.PhotonArray.makeFromImage(specImg)
# photons.x += origin_order_x
# photons.y += origin_order_y
# xlen_imf = int(specImg.xmax - specImg.xmin + 1)
# ylen_imf = int(specImg.ymax - specImg.ymin + 1)
# stamp = galsim.ImageF(xlen_imf, ylen_imf)
# stamp.wcs = local_wcs
# stamp.setOrigin(origin_order_x, origin_order_y)
specImg.wcs = local_wcs specImg.wcs = local_wcs
specImg.setOrigin(origin_order_x, origin_order_y) specImg.setOrigin(origin_order_x, origin_order_y)
......
observation_sim/psf/PSFInterpSLS.py
View file @ 18700088
...@@ -481,6 +481,99 @@ class PSFInterpSLS(PSFModel): ...@@ -481,6 +481,99 @@ class PSFInterpSLS(PSFModel):
return PSF_int_trans, PSF_int return PSF_int_trans, PSF_int
def get_PSF_AND_convolve_withsubImg(self, chip, cutImg=None, bandNo=1, g_order='A', grating_split_pos=3685):
"""
Get the PSF at a given image position
Parameters:
chip: A 'Chip' object representing the chip we want to extract PSF from.
pos_img: A 'galsim.Position' object representing the image position.
bandpass: A 'galsim.Bandpass' object representing the wavelength range.
pixSize: The pixels size of psf matrix
findNeighMode: 'treeFind' or 'hoclistFind'
Returns:
PSF: A 'galsim.GSObject'.
"""
order_IDs = {'A': '1', 'B': '0', 'C': '0', 'D': '0', 'E': '0'}
contam_order_sigma = {'C': 0.28032344707964174,
'D': 0.39900182912061344, 'E': 1.1988309797685412} # arcsec
x_start = chip.x_cen/chip.pix_size - chip.npix_x / 2.
y_start = chip.y_cen/chip.pix_size - chip.npix_y / 2.
# print(pos_img.x - x_start)
# pos_img_x = pos_img_local[0] + x_start
# pos_img_y = pos_img_local[1] + y_start
# pos_img = galsim.PositionD(pos_img_x, pos_img_y)
centerPos_local = cutImg.ncol/2.
if centerPos_local < grating_split_pos:
psf_data = self.grating1_data
else:
psf_data = self.grating2_data
grating_order = order_IDs[g_order]
# if grating_order in ['-2','-1','2']:
# grating_order = '1'
# if grating_order in ['0', '1']:
psf_order = psf_data['order'+grating_order]
psf_order_b = psf_order['band'+str(bandNo)]
psf_b_dat = psf_order_b['band_data']
# pos_p = psf_b_dat[1].data
pos_p = psf_b_dat[1].data/chip.pix_size - np.array([y_start, x_start])
pc_coeff = psf_b_dat[2].data
pcs = psf_b_dat[0].data
npc = 10
m_size = int(pcs.shape[0]**0.5)
tmp_img = cutImg*0
for j in np.arange(npc):
X_ = jnp.hstack((pos_p[:,1].flatten()[:, None], pos_p[:,0].flatten()[:, None]),dtype=np.float32)
Z_ = (pc_coeff[j].astype(np.float32)).flatten()
# print(pc_coeff[j].shape[0], pos_p[:,1].shape[0], pos_p[:,0].shape[0])
cx_len = int(chip.npix_x)
cy_len = int(chip.npix_y)
n_x = jnp.arange(0, cx_len, 1, dtype = int)
n_y = jnp.arange(0, cy_len, 1, dtype = int)
M, N = jnp.meshgrid(n_x, n_y)
t1=datetime.datetime.now()
# U = interpolate.griddata(X_, Z_, (M[0:cy_len, 0:cx_len],N[0:cy_len, 0:cx_len]),
# method='nearest',fill_value=1.0)
ys = cutImg.ymin
if ys < 0:
ys = 0
ye = cutImg.ymin+cutImg.nrow
if ye >= cy_len-1:
ye = cy_len-1
if ye - ys <=0:
continue
xs = cutImg.xmin
if xs < 0:
xs = 0
xe = cutImg.xmin+cutImg.ncol
if xe >= cx_len-1:
xe = cx_len-1
if xe - xs <=0:
continue
U = interpolate.griddata(X_, Z_, (M[ys:ye, xs:xe],N[ys:ye, xs:xe]),
method='nearest',fill_value=1.0)
t2=datetime.datetime.now()
print("time interpolate:", t2-t1)
if U.shape != cutImg.array.shape:
print('DEBUG:SHAPE',cutImg.ncol,cutImg.nrow,cutImg.xmin, cutImg.ymin)
continue
img_tmp = cutImg.array*U
psf = pcs[:, j].reshape(m_size, m_size)
tmp_img = tmp_img + signal.fftconvolve(img_tmp, psf, mode='same', axes=None)
t3=datetime.datetime.now()
print("time convole:", t3-t2)
del U
return tmp_img
def convolveFullImgWithPCAPSF(self, chip, folding_threshold=5.e-3): def convolveFullImgWithPCAPSF(self, chip, folding_threshold=5.e-3):
keys_L1= chip_utils.getChipSLSGratingID(chip.chipID) keys_L1= chip_utils.getChipSLSGratingID(chip.chipID)
# keys_L2 = ['order-2','order-1','order0','order1','order2'] # keys_L2 = ['order-2','order-1','order0','order1','order2']
......
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