def BG_sub_sb_func(
N_sample,
jk_sub_sb,
sb_out_put,
band_str,
BG_file,
trunk_R=2e3,
):
"""
by default, trunk_R = 2Mpc, which meanse the model signal beyond 2Mpc will be treated as
background and subtracted from the observation
"""
tmp_r, tmp_sb = [], []
cat = pds.read_csv(BG_file)
(e_a, e_b, e_x0, e_A, e_alpha, e_B,
offD) = (np.array(cat['e_a'])[0], np.array(cat['e_b'])[0],
np.array(cat['e_x0'])[0], np.array(cat['e_A'])[0],
np.array(cat['e_alpha'])[0], np.array(cat['e_B'])[0],
np.array(cat['offD'])[0])
I_e, R_e = np.array(cat['I_e'])[0], np.array(cat['R_e'])[0]
sb_2Mpc = sersic_func(trunk_R, I_e, R_e)
for kk in range(N_sample):
with h5py.File(jk_sub_sb % kk, 'r') as f:
c_r_arr = np.array(f['r'])
c_sb_arr = np.array(f['sb'])
c_sb_err = np.array(f['sb_err'])
npix = np.array(f['npix'])
id_Nul = npix < 1
c_r_arr[id_Nul] = np.nan
c_sb_arr[id_Nul] = np.nan
c_sb_err[id_Nul] = np.nan
full_r_fit = cc_rand_sb_func(c_r_arr, e_a, e_b, e_x0, e_A, e_alpha,
e_B)
full_BG = full_r_fit - offD + sb_2Mpc
devi_sb = c_sb_arr - full_BG
tmp_r.append(c_r_arr)
tmp_sb.append(devi_sb)
tt_jk_R, tt_jk_SB, tt_jk_err, lim_R = jack_SB_func(
tmp_sb,
tmp_r,
band_str,
N_sample,
)[4:]
## save BG-subtracted pros
with h5py.File(sb_out_put, 'w') as f:
f['r'] = np.array(tt_jk_R)
f['sb'] = np.array(tt_jk_SB)
f['sb_err'] = np.array(tt_jk_err)
return
def aveg_jack_PA_SB_func(J_sub_img, J_sub_pix_cont, J_sub_sb, jack_SB_file,
N_bin, n_rbins, pix_size, zx, band_str):
"""
measure the average SB profile of jackknife subsample
-----------------------------------
J_sub_img, J_sub_pix_cont : the stacked image and corresponding pixel counts of subsamples
J_sub_sb : .csv file, the output file of surface brightness profile of subsamples
jack_SB_file : .csv file, the output of average jackknife subsample surface brightness
N_bin, n_rbins : the number of subsample (N_bin), and number of radii bins (n_rbins)
pix_size, zx : pixel scale (in units of arcsec) and redshift of measurement
band_str : filter information (i.e., 'g', 'r', 'i')
"""
#. radius bin
lim_r = 0
for nn in range(N_bin):
with h5py.File(J_sub_img % nn, 'r') as f:
tmp_img = np.array(f['a'])
xn, yn = np.int(tmp_img.shape[1] / 2), np.int(tmp_img.shape[0] / 2)
id_nn = np.isnan(tmp_img)
eff_y, eff_x = np.where(id_nn == False)
dR = np.sqrt((eff_y - yn)**2 + (eff_x - xn)**2)
dR_max = np.int(dR.max()) + 1
lim_r = np.max([lim_r, dR_max])
r_bins = np.logspace(0, np.log10(lim_r), n_rbins)
#. SB measure
for nn in range(N_bin):
with h5py.File(J_sub_img % nn, 'r') as f:
tmp_img = np.array(f['a'])
with h5py.File(J_sub_pix_cont % nn, 'r') as f:
tmp_cont = np.array(f['a'])
xn, yn = np.int(tmp_img.shape[1] / 2), np.int(tmp_img.shape[0] / 2)
h_array, v_array, d_array = PA_SB_Zx_func(tmp_img, tmp_cont, pix_size,
xn, yn, zx, r_bins)
SB_h_R, SB_h, SB_h_err, N_pix_h, nsum_ratio_h = h_array[:]
SB_v_R, SB_v, SB_v_err, N_pix_v, nsum_ratio_v = v_array[:]
SB_d_R, SB_d, SB_d_err, N_pix_d, nsum_ratio_d = d_array[:]
id_hx = N_pix_h < 1.
SB_h_R[id_hx] = np.nan
SB_h[id_hx] = np.nan
SB_h_err[id_hx] = np.nan
id_vx = N_pix_v < 1.
SB_v_R[id_vx] = np.nan
SB_v[id_vx] = np.nan
SB_v_err[id_vx] = np.nan
id_dx = N_pix_d < 1.
SB_d_R[id_dx] = np.nan
SB_d[id_dx] = np.nan
SB_d_err[id_dx] = np.nan
#. save
keys = [
'r_h', 'sb_h', 'sb_err_h', 'r_v', 'sb_v', 'sb_err_v', 'r_d',
'sb_d', 'sb_err_d'
]
values = [
SB_h_R, SB_h, SB_h_err, SB_v_R, SB_v, SB_v_err, SB_d_R, SB_d,
SB_d_err
]
fill = dict(zip(keys, values))
data = pds.DataFrame(fill)
data.to_csv(J_sub_sb % nn)
#. average of jackknife
tmp_h_sb = []
tmp_h_r = []
tmp_v_sb = []
tmp_v_r = []
tmp_d_sb = []
tmp_d_r = []
for nn in range(N_bin):
n_dat = pds.read_csv(J_sub_sb % nn)
r_arr = np.array(n_dat['r_h'])
sb_arr = np.array(n_dat['sb_h'])
sb_err = np.array(n_dat['sb_err_h'])
tmp_h_sb.append(sb_arr)
tmp_h_r.append(r_arr)
r_arr = np.array(n_dat['r_v'])
sb_arr = np.array(n_dat['sb_v'])
sb_err = np.array(n_dat['sb_err_v'])
tmp_v_sb.append(sb_arr)
tmp_v_r.append(r_arr)
r_arr = np.array(n_dat['r_d'])
sb_arr = np.array(n_dat['sb_d'])
sb_err = np.array(n_dat['sb_err_d'])
tmp_d_sb.append(sb_arr)
tmp_d_r.append(r_arr)
## only save the sb result in unit " nanomaggies / arcsec^2 "
tt_jk_R_h, tt_jk_SB_h, tt_jk_err_h, lim_R_h = jack_SB_func(
tmp_h_sb, tmp_h_r, band_str, N_bin)[4:]
tt_jk_R_v, tt_jk_SB_v, tt_jk_err_v, lim_R_v = jack_SB_func(
tmp_v_sb, tmp_v_r, band_str, N_bin)[4:]
tt_jk_R_d, tt_jk_SB_d, tt_jk_err_d, lim_R_d = jack_SB_func(
tmp_d_sb, tmp_d_r, band_str, N_bin)[4:]
#. adjust the array length
Len = [len(tt_jk_R_h), len(tt_jk_R_v), len(tt_jk_R_d)]
L_max = np.max(Len)
out_R_v = np.ones(L_max, ) * np.nan
out_SB_v = np.ones(L_max, ) * np.nan
out_err_v = np.ones(L_max, ) * np.nan
out_R_v[:Len[0]] = tt_jk_R_v[:Len[0]]
out_SB_v[:Len[0]] = tt_jk_SB_v[:Len[0]]
out_err_v[:Len[0]] = tt_jk_err_v[:Len[0]]
out_R_h = np.ones(L_max, ) * np.nan
out_SB_h = np.ones(L_max, ) * np.nan
out_err_h = np.ones(L_max, ) * np.nan
out_R_h[:Len[1]] = tt_jk_R_h[:Len[1]]
out_SB_h[:Len[1]] = tt_jk_SB_h[:Len[1]]
out_err_h[:Len[1]] = tt_jk_err_h[:Len[1]]
out_R_d = np.ones(L_max, ) * np.nan
out_SB_d = np.ones(L_max, ) * np.nan
out_err_d = np.ones(L_max, ) * np.nan
out_R_d[:Len[2]] = tt_jk_R_d[:Len[2]]
out_SB_d[:Len[2]] = tt_jk_SB_d[:Len[2]]
out_err_d[:Len[2]] = tt_jk_err_d[:Len[2]]
sb_lim_r_h = np.ones(len(out_R_h)) * lim_R_h
sb_lim_r_v = np.ones(len(out_R_v)) * lim_R_v
sb_lim_r_d = np.ones(len(out_R_d)) * lim_R_d
#.
keys = [
'r_h', 'sb_h', 'sb_err_h', 'lim_R_h', 'r_v', 'sb_v', 'sb_err_v',
'lim_R_v', 'r_d', 'sb_d', 'sb_err_d', 'lim_R_d'
]
values = [
out_R_h, out_SB_h, out_err_h, sb_lim_r_h, out_R_v, out_SB_v, out_err_v,
sb_lim_r_v, out_R_d, out_SB_d, out_err_d, sb_lim_r_d
]
fill = dict(zip(keys, values))
data = pds.DataFrame(fill)
data.to_csv(jack_SB_file)
return
def stack_BG_sub_func(sat_sb_file,
bg_sb_file,
band_str,
N_sample,
out_file,
sub_out_file=None):
"""
sat_sb_file : SB(r) of satellites, .h5 files
band_str : filter information
bg_sb_file : background SB(r), .h5 file
out_file : .csv file
N_sample : number of subsample
sub_out_file : output the BG-sub profile of subsamples or not
"""
tmp_SB, tmp_R = [], []
with h5py.File(bg_sb_file, 'r') as f:
t_bg_r = np.array(f['r'])
t_bg_sb = np.array(f['sb'])
t_bg_err = np.array(f['sb_err'])
interp_mu_F = interp.interp1d(t_bg_r,
t_bg_sb,
kind='linear',
fill_value='extrapolate')
interp_mu_err = interp.interp1d(t_bg_r,
t_bg_err,
kind='linear',
fill_value='extrapolate')
for kk in range(N_sample):
with h5py.File(sat_sb_file % kk, 'r') as f:
tt_r = np.array(f['r'])
tt_sb = np.array(f['sb'])
tt_err = np.array(f['sb_err'])
tt_npix = np.array(f['npix'])
id_Nul = tt_npix < 1
tt_r[id_Nul] = np.nan
tt_sb[id_Nul] = np.nan
tt_err[id_Nul] = np.nan
_kk_sb = tt_sb - interp_mu_F(tt_r)
if sub_out_file is not None:
_kk_err = np.sqrt(tt_err**2 + interp_mu_err(tt_r)**2)
keys = ['r', 'sb', 'sb_err']
values = [tt_r, _kk_sb, _kk_err]
fill = dict(zip(keys, values))
out_data = pds.DataFrame(fill)
out_data.to_csv(sub_out_file % kk)
tmp_R.append(tt_r)
tmp_SB.append(_kk_sb)
tt_jk_R, tt_jk_SB, tt_jk_err, lim_R = jack_SB_func(tmp_SB, tmp_R, band_str,
N_sample)[4:]
keys = ['r', 'sb', 'sb_err']
values = [tt_jk_R, tt_jk_SB, tt_jk_err]
fill = dict(zip(keys, values))
out_data = pds.DataFrame(fill)
out_data.to_csv(out_file)
return
with h5py.File(J_sub_sb % nn, 'r') as f:
r_arr = np.array(f['r'])[:-1]
sb_arr = np.array(f['sb'])[:-1]
sb_err = np.array(f['sb_err'])[:-1]
npix = np.array(f['npix'])[:-1]
nratio = np.array(f['nratio'])[:-1]
idvx = npix < 1.
sb_arr[idvx] = np.nan
r_arr[idvx] = np.nan
tmp_sb.append(sb_arr)
tmp_r.append(r_arr)
## only save the sb result in unit " nanomaggies / arcsec^2 "
tt_jk_R, tt_jk_SB, tt_jk_err, lim_R = jack_SB_func(
tmp_sb, tmp_r, band_str, N_bin)[4:]
sb_lim_r = np.ones(len(tt_jk_R)) * lim_R
with h5py.File(jack_SB_file, 'w') as f:
f['r'] = np.array(tt_jk_R)
f['sb'] = np.array(tt_jk_SB)
f['sb_err'] = np.array(tt_jk_err)
f['lim_r'] = np.array(sb_lim_r)
order_id = np.arange(0, N_bin, 1)
order_id = order_id.astype(np.int32)
weit_aveg_img(
order_id,
sub_img,
sub_pix_cont,
jack_img,
def jack_main_func(id_cen, N_bin, n_rbins, cat_ra, cat_dec, cat_z, img_x, img_y, img_file, band_str, sub_img,
sub_pix_cont, sub_sb, J_sub_img, J_sub_pix_cont, J_sub_sb, jack_SB_file, jack_img, jack_cont_arr,
id_cut = False, N_edg = None, id_Z0 = True, z_ref = None, id_S2N = False, S2N = None, id_sub = True, edg_bins = None,
sub_rms = None, J_sub_rms = None, jack_rms_arr = None, N_weit = None):
"""
combining jackknife stacking process, and
save : sub-sample (sub-jack-sample) stacking image, pixel conunt array, surface brightness profiles
id_cen : 0 - stacking by centering on BCGs, 1 - stacking by centering on img center
N_bin : number of jackknife sample
n_rbins : the number of radius bins (int type)
cat_ra, cat_dec, cat_z : catalog information about the stacking sample, ra, dec, z
img_x, img_y : BCG position (in image coordinate)
img_file : img-data name (include file-name structure:'/xxx/xxx/xxx.xxx')
band_str : the band of imgs, 'str' type
sub_img, sub_pix_cont, sub_sb (stacking img, pixel counts array, SB profile):
file name (including patch and file name: '/xxx/xxx/xxx.xxx') of individual sub-sample img stacking result
J_sub_img, J_sub_pix_cont, J_sub_sb (stacking img, pixel counts array, SB profile):
file name (including patch and file name: '/xxx/xxx/xxx.xxx') of jackknife sub-sample img stacking result
jack_SB_file : file name of the final jackknife stacking SB profile ('/xxx/xxx/xxx.xxx')
jack_img : mean of the jackknife stacking img ('/xxx/xxx/xxx.xxx')
jack_cont_arr : mean of the pixel count array ('/xxx/xxx/xxx.xxx')
id_cut : id_cut == True, cut img edge pixels before stacking, id_cut == False, just stacking original size imgs
N_edg : the cut region width, in unit of pixel, only applied when id_cut == True, pixels in this region will be set as
'no flux' contribution pixels (ie. set as np.nan)
id_Z0 : stacking imgs on observation coordinate (id_Z0 = True, and reference redshift is z_ref)
or not (id_Z0 = False, give radius in physical unit, kpc), default is True
id_S2N, S2N : if set S/N limitation for SB profile measure or not, Default is False (no limitation applied).
if id_S2N = True, then measure the SB profile, and in region where S/N is lower than S2N with be
treated as only one radius bins (edg_bins = None), (or measured according edg_bins.)
id_sub : measure and save the SB profiles for sub-samples of not, default is True
sub_rms, J_sub_rms : pixel standard deviation of stacking images (for sub-sample and jackknife sub-sample)
jack_rms_file : the final rms_file (total sample imgs stacking result)
N_weit : if weight the cluster image with satellite number or not ('None')
if N_weit != None, is has the same length as the cat_ra array
"""
print( 'id_Z0', id_Z0 )
print( 'id_cut', id_cut )
print( 'N_edg', N_edg )
print( 'z_ref', z_ref )
zN = len( cat_z )
if N_weit is None:
wit_n_arr = np.ones( zN,)
else:
wit_n_arr = N_weit + 0.
id_arr = np.arange(0, zN, 1)
id_group = id_arr % N_bin
lis_ra, lis_dec, lis_z = [], [], []
lis_x, lis_y = [], []
lis_wn = []
for nn in range( N_bin ):
id_xbin = np.where( id_group == nn )[0]
lis_ra.append( cat_ra[ id_xbin ] )
lis_dec.append( cat_dec[ id_xbin ] )
lis_z.append( cat_z[ id_xbin ] )
lis_x.append( img_x[ id_xbin ] )
lis_y.append( img_y[ id_xbin ] )
lis_wn.append( wit_n_arr[ id_xbin ] )
band_id = band.index( band_str )
## img stacking
for nn in range(N_bin):
set_z = lis_z[ nn ]
set_ra = lis_ra[ nn ]
set_dec = lis_dec[ nn ]
set_x = lis_x[ nn ]
set_y = lis_y[ nn ]
set_wn = lis_wn[ nn ]
sub_img_file = sub_img % nn
sub_cont_file = sub_pix_cont % nn
if sub_rms is not None:
sub_rms_file = sub_rms % nn
else:
sub_rms_file = None
if id_cut == False:
stack_func(img_file, sub_img_file, set_z, set_ra, set_dec, band[ band_id ], set_x, set_y, id_cen,
rms_file = sub_rms_file, pix_con_file = sub_cont_file, N_weit = set_wn )
if id_cut == True:
cut_stack_func(img_file, sub_img_file, set_z, set_ra, set_dec, band[ band_id ], set_x, set_y, id_cen, N_edg,
rms_file = sub_rms_file, pix_con_file = sub_cont_file, N_weit = set_wn )
for nn in range( N_bin ):
id_arry = np.linspace(0, N_bin -1, N_bin)
id_arry = id_arry.astype(int)
jack_id = list(id_arry)
jack_id.remove(jack_id[nn])
jack_id = np.array(jack_id)
jack_img_file = J_sub_img % nn
jack_cont_file = J_sub_pix_cont % nn
weit_aveg_img(jack_id, sub_img, sub_pix_cont, jack_img_file, sum_weit_file = jack_cont_file,)
if sub_rms is not None:
jack_rms_file = J_sub_rms % nn
weit_aveg_img(jack_id, sub_rms, sub_pix_cont, jack_rms_file,)
## SB measurement
if id_sub == True:
## sub-samples
SB_pros_func(sub_img, sub_pix_cont, sub_sb, N_bin, n_rbins, id_Z0, z_ref)
if id_S2N == False:
## jackknife sub-samples
SB_pros_func(J_sub_img, J_sub_pix_cont, J_sub_sb, N_bin, n_rbins, id_Z0, z_ref)
## final jackknife SB profile
tmp_sb = []
tmp_r = []
for nn in range( N_bin ):
with h5py.File(J_sub_sb % nn, 'r') as f:
r_arr = np.array(f['r'])[:-1]
sb_arr = np.array(f['sb'])[:-1]
sb_err = np.array(f['sb_err'])[:-1]
npix = np.array(f['npix'])[:-1]
nratio = np.array(f['nratio'])[:-1]
idvx = npix < 1.
sb_arr[idvx] = np.nan
r_arr[idvx] = np.nan
tmp_sb.append(sb_arr)
tmp_r.append(r_arr)
## only save the sb result in unit " nanomaggies / arcsec^2 "
tt_jk_R, tt_jk_SB, tt_jk_err, lim_R = jack_SB_func(tmp_sb, tmp_r, band[ band_id ], N_bin)[4:]
sb_lim_r = np.ones( len(tt_jk_R) ) * lim_R
with h5py.File(jack_SB_file, 'w') as f:
f['r'] = np.array(tt_jk_R)
f['sb'] = np.array(tt_jk_SB)
f['sb_err'] = np.array(tt_jk_err)
f['lim_r'] = np.array(sb_lim_r)
else:
if id_Z0 == True:
lim_SB_pros_func(J_sub_img, J_sub_pix_cont, J_sub_sb, jack_SB_file, n_rbins, N_bin, S2N, band_id, edg_bins,)
else:
zref_lim_SB_adjust_func(J_sub_img, J_sub_pix_cont, J_sub_sb, jack_SB_file, n_rbins, N_bin, S2N, z_ref, band_id, edg_bins,)
# calculate the directly stacking result( 2D_img, pixel_count array, and rms file [if sub_rms is not None] )
order_id = np.arange(0, N_bin, 1)
order_id = order_id.astype( np.int32 )
weit_aveg_img(order_id, sub_img, sub_pix_cont, jack_img, sum_weit_file = jack_cont_arr,)
if sub_rms is not None:
weit_aveg_img(order_id, sub_rms, sub_pix_cont, jack_rms_arr,)
return
def tmp_SB_func(
R_bins,
N_bin,
J_sub_img,
J_sub_pix_cont,
J_sub_sb,
band_id,
jack_sb,
pixel,
):
r_bins = R_bins
for nn in range(N_bin):
with h5py.File(J_sub_img % nn, 'r') as f:
tmp_img = np.array(f['a'])
with h5py.File(J_sub_pix_cont % nn, 'r') as f:
tmp_cont = np.array(f['a'])
xn, yn = np.int(tmp_img.shape[1] / 2), np.int(tmp_img.shape[0] / 2)
Intns, Angl_r, Intns_err, npix, nratio = light_measure_Z0_weit(
tmp_img, tmp_cont, pixel, xn, yn, r_bins)
sb_arr, sb_err_arr = Intns, Intns_err
r_arr = Angl_r
with h5py.File(J_sub_sb % nn, 'w') as f:
f['r'] = np.array(r_arr)
f['sb'] = np.array(sb_arr)
f['sb_err'] = np.array(sb_err_arr)
f['nratio'] = np.array(nratio)
f['npix'] = np.array(npix)
## final jackknife SB profile
tmp_sb = []
tmp_r = []
for nn in range(N_bin):
with h5py.File(J_sub_sb % nn, 'r') as f:
r_arr = np.array(f['r'])[:-1]
sb_arr = np.array(f['sb'])[:-1]
sb_err = np.array(f['sb_err'])[:-1]
npix = np.array(f['npix'])[:-1]
nratio = np.array(f['nratio'])[:-1]
idvx = npix < 1.
sb_arr[idvx] = np.nan
r_arr[idvx] = np.nan
tmp_sb.append(sb_arr)
tmp_r.append(r_arr)
## only save the sb result in unit " nanomaggies / arcsec^2 "
tt_jk_R, tt_jk_SB, tt_jk_err, lim_R = jack_SB_func(tmp_sb, tmp_r,
band[band_id],
N_bin)[4:]
sb_lim_r = np.ones(len(tt_jk_R)) * lim_R
with h5py.File(jack_sb, 'w') as f:
f['r'] = np.array(tt_jk_R)
f['sb'] = np.array(tt_jk_SB)
f['sb_err'] = np.array(tt_jk_err)
f['lim_r'] = np.array(sb_lim_r)
return
def sat_BG_fast_stack_func(bcg_ra,
bcg_dec,
bcg_z,
sat_ra,
sat_dec,
img_x,
img_y,
img_file,
band_str,
id_cen,
N_bin,
n_rbins,
sub_img,
sub_pix_cont,
sub_sb,
J_sub_img,
J_sub_pix_cont,
J_sub_sb,
jack_SB_file,
jack_img,
jack_cont_arr,
rank,
id_cut=False,
N_edg=None,
id_Z0=True,
z_ref=None,
id_S2N=False,
S2N=None,
edg_bins=None,
id_sub=True,
sub_rms=None,
J_sub_rms=None,
jack_rms_arr=None,
weit_img=None):
"""
combining jackknife stacking process, and
save : sub-sample (sub-jack-sample) stacking image, pixel conunt array, surface brightness profiles
id_cen : 0 - stacking by centering on BCGs, 1 - stacking by centering on img center
N_bin : number of jackknife sample
n_rbins : the number of radius bins (int type)
cat_ra, cat_dec, cat_z : catalog information about the stacking sample, ra, dec, z
sat_ra, sat_dec : satellites' location
img_x, img_y : satellites position (in image coordinate)
img_file : img-data name (include file-name structure:'/xxx/xxx/xxx.xxx')
band_str : the band of imgs, 'str' type
sub_img, sub_pix_cont, sub_sb (stacking img, pixel counts array, SB profile):
file name (including patch and file name: '/xxx/xxx/xxx.xxx') of individual sub-sample img stacking result
J_sub_img, J_sub_pix_cont, J_sub_sb (stacking img, pixel counts array, SB profile):
file name (including patch and file name: '/xxx/xxx/xxx.xxx') of jackknife sub-sample img stacking result
jack_SB_file : file name of the final jackknife stacking SB profile ('/xxx/xxx/xxx.xxx')
jack_img : mean of the jackknife stacking img ('/xxx/xxx/xxx.xxx')
jack_cont_arr : mean of the pixel count array ('/xxx/xxx/xxx.xxx')
id_cut : id_cut == True, cut img edge pixels before stacking, id_cut == False, just stacking original size imgs
N_edg : the cut region width, in unit of pixel, only applied when id_cut == True, pixels in this region will be set as
'no flux' contribution pixels (ie. set as np.nan)
id_Z0 : stacking imgs on observation coordinate (id_Z0 = True, and reference redshift is z_ref)
or not (id_Z0 = False, give radius in physical unit, kpc), default is True
id_S2N, S2N : if set S/N limitation for SB profile measure or not, Default is False (no limitation applied).
if id_S2N = True, then measure the SB profile, and in region where S/N is lower than S2N with be
treated as only one radius bins (edg_bins = None), (or measured according edg_bins.)
id_sub : measure and save the SB profiles for sub-samples of not, default is True
sub_rms, J_sub_rms : pixel standard deviation of stacking images (for sub-sample and jackknife sub-sample)
jack_rms_file : the final rms_file (total sample imgs stacking result)
---------------------------
weit_img : array use to apply weight to each stacked image (can be the masekd image after resampling), default is array
has value of 1 only.
"""
from img_sat_BG_jack_stack import weit_aveg_img
from img_sat_BG_jack_stack import SB_pros_func
from img_sat_BG_jack_stack import aveg_stack_img
from img_sat_BG_stack import cut_stack_func, stack_func
zN = len(bcg_z)
id_arr = np.arange(0, zN, 1)
id_group = id_arr % N_bin
for nn in range(rank, rank + 1):
id_xbin = np.where(id_group == nn)[0]
set_z = bcg_z[id_xbin]
set_ra = bcg_ra[id_xbin]
set_dec = bcg_dec[id_xbin]
set_s_ra = sat_ra[id_xbin]
set_s_dec = sat_dec[id_xbin]
set_x = img_x[id_xbin]
set_y = img_y[id_xbin]
sub_img_file = sub_img % nn
sub_cont_file = sub_pix_cont % nn
if sub_rms is not None:
sub_rms_file = sub_rms % nn
else:
sub_rms_file = None
if id_cut == False:
stack_func(img_file,
sub_img_file,
set_z,
set_ra,
set_dec,
band_str,
set_s_ra,
set_s_dec,
set_x,
set_y,
id_cen,
rms_file=sub_rms_file,
pix_con_file=sub_cont_file,
weit_img=weit_img)
if id_cut == True:
cut_stack_func(img_file,
sub_img_file,
set_z,
set_ra,
set_dec,
band_str,
set_s_ra,
set_s_dec,
set_x,
set_y,
id_cen,
N_edg,
rms_file=sub_rms_file,
pix_con_file=sub_cont_file,
weit_img=weit_img)
commd.Barrier()
for nn in range(rank, rank + 1):
id_arry = np.linspace(0, N_bin - 1, N_bin)
id_arry = id_arry.astype(int)
jack_id = list(id_arry)
jack_id.remove(jack_id[nn])
jack_id = np.array(jack_id)
jack_img_file = J_sub_img % nn
jack_cont_file = J_sub_pix_cont % nn
weit_aveg_img(
jack_id,
sub_img,
sub_pix_cont,
jack_img_file,
sum_weit_file=jack_cont_file,
)
if sub_rms is not None:
jack_rms_file = J_sub_rms % nn
weit_aveg_img(
jack_id,
sub_rms,
sub_pix_cont,
jack_rms_file,
)
commd.Barrier()
if rank == 0:
## SB measurement
if id_sub == True:
## sub-samples
SB_pros_func(sub_img, sub_pix_cont, sub_sb, N_bin, n_rbins, id_Z0,
z_ref)
if id_S2N == False:
## jackknife sub-samples
SB_pros_func(J_sub_img, J_sub_pix_cont, J_sub_sb, N_bin, n_rbins,
id_Z0, z_ref)
## final jackknife SB profile
tmp_sb = []
tmp_r = []
for nn in range(N_bin):
with h5py.File(J_sub_sb % nn, 'r') as f:
r_arr = np.array(f['r'])[:-1]
sb_arr = np.array(f['sb'])[:-1]
sb_err = np.array(f['sb_err'])[:-1]
npix = np.array(f['npix'])[:-1]
nratio = np.array(f['nratio'])[:-1]
idvx = npix < 1.
sb_arr[idvx] = np.nan
r_arr[idvx] = np.nan
tmp_sb.append(sb_arr)
tmp_r.append(r_arr)
## only save the sb result in unit " nanomaggies / arcsec^2 "
tt_jk_R, tt_jk_SB, tt_jk_err, lim_R = jack_SB_func(
tmp_sb, tmp_r, band_str, N_bin)[4:]
sb_lim_r = np.ones(len(tt_jk_R)) * lim_R
with h5py.File(jack_SB_file, 'w') as f:
f['r'] = np.array(tt_jk_R)
f['sb'] = np.array(tt_jk_SB)
f['sb_err'] = np.array(tt_jk_err)
f['lim_r'] = np.array(sb_lim_r)
else:
if id_Z0 == True:
lim_SB_pros_func(
J_sub_img,
J_sub_pix_cont,
J_sub_sb,
jack_SB_file,
n_rbins,
N_bin,
S2N,
band_str,
edg_bins,
)
else:
zref_lim_SB_adjust_func(
J_sub_img,
J_sub_pix_cont,
J_sub_sb,
jack_SB_file,
n_rbins,
N_bin,
S2N,
z_ref,
band_str,
edg_bins,
)
# calculate the directly stacking result( 2D_img, pixel_count array, and rms file [if sub_rms is not None] )
order_id = np.arange(0, N_bin, 1)
order_id = order_id.astype(np.int32)
weit_aveg_img(
order_id,
sub_img,
sub_pix_cont,
jack_img,
sum_weit_file=jack_cont_arr,
)
if sub_rms is not None:
weit_aveg_img(order_id, sub_rms, sub_pix_cont, jack_rms_arr)
print('%d-rank, Done!' % rank)
return
def sky_jack_main_func(
id_cen,
N_bin,
n_rbins,
cat_ra,
cat_dec,
cat_z,
img_x,
img_y,
img_file,
band_str,
sub_img,
sub_pix_cont,
sub_sb,
J_sub_img,
J_sub_pix_cont,
J_sub_sb,
jack_SB_file,
jack_img,
jack_cont_arr,
id_mean=0,
id_cut=False,
N_edg=None,
id_Z0=True,
z_ref=None,
id_sub=True,
sub_rms=None,
J_sub_rms=None,
jack_rms_arr=None,
):
"""
combining jackknife stacking process, and
save : sub-sample (sub-jack-sample) stacking image, pixel conunt array, surface brightness profiles
id_cen : 0 - stacking by centering on BCGs, 1 - stacking by centering on img center,
2 - stacking by random center
N_bin : number of jackknife sample
n_rbins : the number of radius bins (int type)
cat_ra, cat_dec, cat_z : catalog information about the stacking sample, ra, dec, z
img_x, img_y : BCG position (in image coordinate)
img_file : img-data name (include file-name structure:'/xxx/xxx/xxx.xxx')
band_str : the band of imgs, 'str' type
sub_img, sub_pix_cont, sub_sb (stacking img, pixel counts array, SB profile):
file name (including patch and file name: '/xxx/xxx/xxx.xxx') of individual sub-sample img stacking result
J_sub_img, J_sub_pix_cont, J_sub_sb (stacking img, pixel counts array, SB profile):
file name (including patch and file name: '/xxx/xxx/xxx.xxx') of jackknife sub-sample img stacking result
jack_SB_file : file name of the final jackknife stacking SB profile ('/xxx/xxx/xxx.xxx')
jack_img : mean of the jackknife stacking img ('/xxx/xxx/xxx.xxx')
jack_cont_arr : mean of the pixel count array ('/xxx/xxx/xxx.xxx')
id_cut : id_cut == True, cut img edge pixels before stacking, id_cut == False, just stacking original size imgs
N_edg : the cut region width, in unit of pixel, only applied when id_cut == True, pixels in this region will be set as
'no flux' contribution pixels (ie. set as np.nan)
id_Z0 : stacking imgs on observation coordinate (id_Z0 = True)
or not (id_Z0 = False, give radius in physical unit, kpc), default is True
z_ref : reference redshift, (used when id_Z0 = False,) stacking imgs at z_ref.
id_sub : if measure the individual sub-samples profile( id_sub = True), or not (id_sub = False)
id_mean : 0, 1, 2. 0 - img_add = img;
1 - img_add = img - np.mean(img); 2 - img_add = img - np.median(img); Default is id_mean = 0
sub_rms, J_sub_rms : pixel standard deviation of stacking images (for sub-sample and jackknife sub-sample)
jack_rms_file : the final rms_file (total sample imgs stacking result)
"""
zN = len(cat_z)
id_arr = np.arange(0, zN, 1)
id_group = id_arr % N_bin
lis_ra, lis_dec, lis_z = [], [], []
lis_x, lis_y = [], []
for nn in range(N_bin):
id_xbin = np.where(id_group == nn)[0]
lis_ra.append(cat_ra[id_xbin])
lis_dec.append(cat_dec[id_xbin])
lis_z.append(cat_z[id_xbin])
lis_x.append(img_x[id_xbin])
lis_y.append(img_y[id_xbin])
## img stacking
for nn in range(N_bin):
set_z = lis_z[nn]
set_ra = lis_ra[nn]
set_dec = lis_dec[nn]
set_x = lis_x[nn]
set_y = lis_y[nn]
sub_img_file = sub_img % nn
sub_cont_file = sub_pix_cont % nn
if sub_rms is not None:
sub_rms_file = sub_rms % nn
else:
sub_rms_file = None
if id_cut == False:
stack_func(
img_file,
sub_img_file,
set_z,
set_ra,
set_dec,
band_str,
set_x,
set_y,
id_cen,
rms_file=sub_rms_file,
pix_con_file=sub_cont_file,
id_mean=id_mean,
)
if id_cut == True:
cut_stack_func(
img_file,
sub_img_file,
set_z,
set_ra,
set_dec,
band_str,
set_x,
set_y,
id_cen,
N_edg,
rms_file=sub_rms_file,
pix_con_file=sub_cont_file,
id_mean=id_mean,
)
for nn in range(N_bin):
id_arry = np.linspace(0, N_bin - 1, N_bin)
id_arry = id_arry.astype(int)
jack_id = list(id_arry)
jack_id.remove(jack_id[nn])
jack_id = np.array(jack_id)
jack_img_file = J_sub_img % nn
jack_cont_file = J_sub_pix_cont % nn
weit_aveg_img(
jack_id,
sub_img,
sub_pix_cont,
jack_img_file,
sum_weit_file=jack_cont_file,
)
if sub_rms is not None:
jack_rms_file = J_sub_rms % nn
weit_aveg_img(
jack_id,
sub_rms,
sub_pix_cont,
jack_rms_file,
)
## SB measurement
if id_sub == True:
## sub-samples
SB_pros_func(sub_img, sub_pix_cont, sub_sb, N_bin, n_rbins, id_Z0,
z_ref)
## jackknife sub-samples
SB_pros_func(J_sub_img, J_sub_pix_cont, J_sub_sb, N_bin, n_rbins, id_Z0,
z_ref)
## final jackknife SB profile
tmp_sb = []
tmp_r = []
for nn in range(N_bin):
with h5py.File(J_sub_sb % nn, 'r') as f:
r_arr = np.array(f['r'])[:-1]
sb_arr = np.array(f['sb'])[:-1]
sb_err = np.array(f['sb_err'])[:-1]
npix = np.array(f['npix'])[:-1]
nratio = np.array(f['nratio'])[:-1]
idvx = npix < 1.
sb_arr[idvx] = np.nan
r_arr[idvx] = np.nan
tmp_sb.append(sb_arr)
tmp_r.append(r_arr)
## only save the sb result in unit " nanomaggies / arcsec^2 "
tt_jk_R, tt_jk_SB, tt_jk_err, lim_R = jack_SB_func(tmp_sb, tmp_r, band_str,
N_bin)[4:]
sb_lim_r = np.ones(len(tt_jk_R)) * lim_R
with h5py.File(jack_SB_file, 'w') as f:
f['r'] = np.array(tt_jk_R)
f['sb'] = np.array(tt_jk_SB)
f['sb_err'] = np.array(tt_jk_err)
f['lim_r'] = np.array(sb_lim_r)
# calculate the directly stacking result( 2D_img, pixel_count array, and rms file [if sub_rms is not None] )
order_id = np.arange(0, N_bin, 1)
order_id = order_id.astype(np.int32)
weit_aveg_img(
order_id,
sub_img,
sub_pix_cont,
jack_img,
sum_weit_file=jack_cont_arr,
)
if sub_rms is not None:
weit_aveg_img(
order_id,
sub_rms,
sub_pix_cont,
jack_rms_arr,
)
return