add options to switch off difference in bias/gain of 16 channels

ObservationSim/Instrument/Chip/Chip.py

@@ -440,11 +440,14 @@ class Chip(FocalPlane):
                 self.logger.info("  Adding Bias level and 16-channel non-uniformity")
             else:
                 print("  Adding Bias level and 16-channel non-uniformity")
-            img = effects.AddBiasNonUniform16(img, 
-                bias_level=float(config["ins_effects"]["bias_level"]), 
-                nsecy = 2, nsecx=8, 
-                seed=SeedBiasNonuni+self.chipID,
-                logger=self.logger)
+            if config["ins_effects"]["bias_16channel"] == True:
+                img = effects.AddBiasNonUniform16(img, 
+                    bias_level=float(config["ins_effects"]["bias_level"]), 
+                    nsecy = 2, nsecx=8, 
+                    seed=SeedBiasNonuni+self.chipID,
+                    logger=self.logger)
+            elif config["ins_effects"]["bias_16channel"] == False:
+                img += self.bias_level
 
         # Apply Nonlinearity on the chip image
         if config["ins_effects"]["non_linear"] == True:
@@ -477,17 +480,20 @@ class Chip(FocalPlane):
             readout_noise = galsim.GaussianNoise(rng=rng_readout, sigma=self.read_noise)
             img.addNoise(readout_noise)
 
-
         # Apply Gain & Quantization
         if self.logger is not None:
             self.logger.info("  Applying Gain (and 16 channel non-uniformity) & Quantization")
         else:
             print("  Applying Gain (and 16 channel non-uniformity) & Quantization", flush=True)
-        img = effects.ApplyGainNonUniform16(
-            img, gain=self.gain, 
-            nsecy = 2, nsecx=8, 
-            seed=SeedGainNonuni+self.chipID,
-            logger=self.logger)
+        if config["ins_effects"]["gain_16channel"] == True:
+            img = effects.ApplyGainNonUniform16(
+                img, gain=self.gain, 
+                nsecy = 2, nsecx=8, 
+                seed=SeedGainNonuni+self.chipID,
+                logger=self.logger)
+        elif config["ins_effects"]["gain_16channel"] == False:
+            img /= self.gain
+            
         img.array[img.array > 65535] = 65535
         img.replaceNegative(replace_value=0)
         img.quantize()

config/config_NGP_dev.yaml

+---
+###############################################
+#
+#  Configuration file for CSST simulation
+#  CSST-Sim Group, 2021/10/07, version 0.3
+#
+###############################################
+
+# Base diretories and naming setup
+# Can add some of the command-line arguments here as well;
+# OK to pass either way or both, as long as they are consistent
+# work_dir: "/public/home/fangyuedong/sim_code_release/CSST/test/"
+work_dir: "/public/home/fangyuedong/test/CSST/workplace/"
+data_dir: "/data/simudata/CSSOSDataProductsSims/data/"
+run_name: "TEST_16channel_off"
+
+# (Optional) a file of point list 
+# if you just want to run default pointing:
+# - pointing_dir: null
+# - pointing_file: null
+pointing_dir: "/data/simudata/CSSOSDataProductsSims/data/"
+pointing_file: "pointing_test_NGP_2.17.dat"
+
+# Whether to use MPI
+run_option:
+  use_mpi: YES
+  # NOTE: "n_threads" paramters is currently not used in the backend
+  # simulation codes. It should be implemented later in the web frontend
+  # in order to config the number of threads to request from NAOC cluster
+  n_threads: 80
+
+  # Output catalog only?
+  # If yes, no imaging simulation will run
+  out_cat_only: NO
+
+  # Only simulate stars?
+  star_only: NO
+
+  # Only simulate galaxies?
+  galaxy_only: NO
+
+###############################################
+# Observation setting
+###############################################
+obs_setting:
+
+  # Options for survey types:
+  # "Photometric": simulate photometric chips only
+  # "Spectroscopic": simulate slitless spectroscopic chips only
+  # "All": simulate full focal plane
+  survey_type: "All"
+  
+  # Exposure time [seconds]
+  exp_time: 150.
+
+  # Observation starting date & time
+  # (Subject to change)
+  date_obs: "210525" # [yymmdd]
+  time_obs: "120000" # [hhmmss]
+
+  # Default Pointing [degrees]
+  # Note: NOT valid when a pointing list file is specified
+  ra_center: 192.8595
+  dec_center:  27.1283
+
+  # Image rotation [degree]
+  image_rot: -113.4333
+
+  # Number of calibration pointings
+  np_cal: 0
+
+  # Run specific pointing(s):
+  # - give a list of indexes of pointings: [ip_1, ip_2...]
+  # - run all pointings: null
+  # Note: only valid when a pointing list is specified
+  run_pointings: [0]
+  
+  # Run specific chip(s):
+  # - give a list of indexes of chips: [ip_1, ip_2...]
+  # - run all chips: null
+  # Note: for all pointings
+  run_chips: [24]
+
+  # Whether to enable astrometric modeling
+  # astrometric_lib: "libshao.so"
+  enable_astrometric_model: True
+
+  # Cut by saturation/limiting magnitude in which band?
+  cut_in_band: "g"
+
+###############################################
+# Input path setting
+###############################################
+
+# Default path settings for WIDE survey simulation
+input_path:
+  cat_dir: "OnOrbitCalibration/CTargets20211231"
+  star_cat: "CT-NGP_r1.8_G28.hdf5"
+  galaxy_cat: "galaxyCats_r_3.0_healpix_shift_192.859500_27.128300.hdf5"
+
+SED_templates_path:
+  star_SED: "Catalog_20210126/SpecLib.hdf5"
+  galaxy_SED: "Templates/Galaxy/"
+
+###############################################
+# PSF setting
+###############################################
+psf_setting:
+  
+  # Which PSF model to use:
+  # "Gauss": simple gaussian profile
+  # "Interp": Interpolated PSF from sampled ray-tracing data
+  psf_model: "Interp"
+
+  # PSF size [arcseconds]
+  # radius of 80% energy encircled
+  # NOTE: only valid for "Gauss" PSF
+  psf_rcont: 0.15
+
+  # path to PSF data
+  # NOTE: only valid for "Interp" PSF
+  psf_dir: "/data/simudata/CSSOSDataProductsSims/data/csstPSFdata/psfCube"
+
+  # path to field-distortion model
+  # Note: only valid when ins_effects: field_dist is "ON"
+  fd_path: "FieldDistModelGlobal_v1.0.pickle"
+  
+  # sigma_spin: 0.0 # psf spin?
+
+###############################################
+# Shear setting
+###############################################
+
+shear_setting:
+  # Options to generate mock shear field:
+  # "constant": all galaxies are assigned a constant reduced shear
+  # "catalog": from catalog (not available yet)
+  # "extra": from seprate file
+  shear_type: "constant"
+
+  # For constant shear filed
+  reduced_g1: 0.026
+  reduced_g2: 0.015
+
+  # Representation of the shear vector?
+  reShear: "E"
+
+  # rotate galaxy ellipticity
+  rotateEll: 0. # [degree]
+
+  # Extra shear catalog
+  # (currently not used)
+  # shear_cat: "mockShear.cat"
+
+###############################################
+# Instrumental effects setting
+###############################################
+ins_effects:
+  # switches
+  field_dist:     ON  # Whether to add field distortions
+  add_back:       ON  # Whether to add sky background
+  add_dark:       ON  # Whether to add dark noise
+  add_readout:    ON # Whether to add read-out (Gaussian) noise
+  add_bias:       ON # Whether to add bias-level to images
+  bias_16channel: ON  # Whether to add different biases for 16 channels
+  gain_16channel: ON  # Whether to make different gains for 16 channels
+  shutter_effect: ON # Whether to add shutter effect
+  flat_fielding:  ON # Whether to add flat-fielding effect
+  prnu_effect:    ON # Whether to add PRNU effect
+  non_linear:     ON # Whether to add non-linearity
+  cosmic_ray:     ON # Whether to add cosmic-ray
+  cray_differ:    ON # Whether to generate different cosmic ray maps CAL and MS output
+  cte_trail:      ON # Whether to simulate CTE trails
+  saturbloom:     ON # Whether to simulate Saturation & Blooming
+  add_badcolumns: ON # Whether to add bad columns
+  add_hotpixels:  ON # Whether to add hot pixels
+  add_deadpixels: ON # Whether to add dead(dark) pixels
+  bright_fatter:  ON # Whether to simulate Brighter-Fatter (also diffusion) effect
+
+  # values
+  dark_exptime:   300   # Exposure time for dark current frames [seconds]
+  flat_exptime:   150   # Exposure time for flat-fielding frames [seconds]
+  readout_time:   40    # The read-out time for each channel [seconds]
+  df_strength:    2.3   # Sillicon sensor diffusion strength
+  bias_level:     500   # bias level [e-/pixel]
+  gain:           1.1   # Gain
+  full_well:      90000 # Full well depth [e-]
+  NBias:          1     # Number of bias frames to be exported for each exposure
+  NDark:          1     # Number of dark frames to be exported for each exposure
+  NFlat:          1     # Number of flat frames to be exported for each exposure
+
+###############################################
+# Output options
+###############################################
+output_setting:
+  readout16:      OFF # Whether to export as 16 channels (subimages) with pre- and over-scan
+  shutter_output: OFF # Whether to export shutter effect 16-bit image
+  bias_output:    ON  # Whether to export bias frames
+  dark_output:    ON  # Whether to export the combined dark current files
+  flat_output:    ON  # Whether to export the combined flat-fielding files
+  prnu_output:    OFF # Whether to export the PRNU (pixel-to-pixel flat-fielding) files
+
+###############################################
+# Random seeds
+###############################################
+random_seeds:
+  seed_Av:              121212    # Seed for generating random intrinsic extinction
+  seed_poisson:         20210601  # Seed for Poisson noise
+  seed_CR:              20210317  # Seed for generating random cosmic ray maps
+  seed_flat:            20210101  # Seed for generating random flat fields
+  seed_prnu:            20210102  # Seed for photo-response non-uniformity
+  seed_gainNonUniform:  20210202  # Seed for gain nonuniformity
+  seed_biasNonUniform:  20210203  # Seed for bias nonuniformity
+  seed_rnNonUniform:    20210204  # Seed for readout-noise nonuniformity
+  seed_badcolumns:      20240309  # Seed for bad columns
+  seed_defective:       20210304  # Seed for defective (bad) pixels
+  seed_readout:         20210601  # Seed for read-out gaussian noise
+...
\ No newline at end of file

run_sim.py

@@ -40,6 +40,12 @@ def run_sim(Catalog):
     if args.work_dir is not None:
         config['work_dir'] = args.work_dir
 
+    # Some default values
+    if "bias_16channel" not in config:
+        config["bias_16channel"] = False
+    if "gain_16channel" not in config:
+        config["gain_16channel"] = False
+
     # Generate lists pointings based on the input pointing list (or default 
     # pointing RA, DEC) and "config["obs_setting"]["run_pointings"]".
     # "config['obs_setting']['np_cal']"" is the number of CAL pointings which will be