diff --git a/ObservationSim/ObservationSim.py b/ObservationSim/ObservationSim.py
index ccfd408f06640b7ad9906cd2ac94ac2209e25088..c8f44d8a5873c4a8d340c2e5920baa1e94cb5cc8 100755
--- a/ObservationSim/ObservationSim.py
+++ b/ObservationSim/ObservationSim.py
@@ -262,6 +262,7 @@ class Observation(object):
                 col_num=chip.colID,
                 date=date_obs,
                 time_obs=time_obs,
+                exptime=pointing.exp_time,
                 im_type='MS')
             h_ext = generateExtensionHeader(
                 xlen=chip.npix_x, 
diff --git a/config/config_C3.yaml b/config/config_C3.yaml
index e233264410abfbe3d21caff0daff2bddd6ba0f3b..419f4650f2900077ea87003f9439321c81761320 100644
--- a/config/config_C3.yaml
+++ b/config/config_C3.yaml
@@ -10,9 +10,9 @@
 # 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/20211203/CSST/workplace/"
+work_dir: "/public/home/fangyuedong/test/CSST/workplace/"
 data_dir: "/data/simudata/CSSOSDataProductsSims/data/"
-run_name: "TEST_astrometry"
+run_name: "TEST_astrometry_FD_30s"
 
 # (Optional) a file of point list 
 # if you just want to run default pointing:
@@ -35,7 +35,7 @@ run_option:
   out_cat_only: NO
 
   # Only simulate stars?
-  star_only: YES
+  star_only: NO
 
   # Only simulate galaxies?
   galaxy_only: NO
@@ -52,7 +52,7 @@ obs_setting:
   survey_type: "All"
   
   # Exposure time [seconds]
-  exp_time: 150.
+  exp_time: 30.
 
   # Observation starting date & time
   # (Subject to change)
@@ -136,7 +136,7 @@ psf_setting:
 
   # path to field-distortion model
   # Note: only valid when ins_effects: field_dist is "ON"
-  fd_path: "FieldDistModelv2.0.pickle"
+  fd_path: "FieldDistModelGlobal_v1.0.pickle"
   
   # sigma_spin: 0.0 # psf spin?
 
diff --git a/run_C3.pbs b/run_C3.pbs
index 3944bca2a4708b86545364b1f85f15214b6f5ff3..4a0bfab832e03529266563ae3b7c437d5cf8b503 100755
--- a/run_C3.pbs
+++ b/run_C3.pbs
@@ -12,7 +12,7 @@
 #PBS -q batch
 #PBS -u fangyuedong
 
-NP=40
+NP=80
 date
 echo $NP