diff --git a/csst_mci_sim/csst_mci_sim.py b/csst_mci_sim/csst_mci_sim.py
index a1eae90149b4e7a018bd94210ba8bee4d0e5140d..43f996693f6db0a70822c0130768f60b9c46285f 100644
--- a/csst_mci_sim/csst_mci_sim.py
+++ b/csst_mci_sim/csst_mci_sim.py
@@ -1200,7 +1200,7 @@ class MCIsimulator():
                                      rdose=8.0e9,                                  
                                      ghostCutoff=22.0,
                                      ghostRatio=5.e-5,
-                                     coveringfraction=0.1,    #CR: 
+                                     coveringfraction=0.05,    #CR: 
                                      # cosmicraylengths =self.information['dir_path']+'MCI_inputData/data/cdf_cr_length.dat',
                                      # cosmicraydistance=self.information['dir_path']+'MCI_inputData/data/cdf_cr_total.dat',                                
                                      # parallelTrapfile =self.information['dir_path']+'MCI_inputData/data/cdm_euclid_parallel.dat',
@@ -5498,7 +5498,7 @@ class MCIsimulator():
         #################################################################
         if self.source in sourcelist:
             if self.radiationDamage:
-                # if self.debug == False: 
+                
                 self.applyRadiationDamage()
                 print('applyRadiationDamage()')
         ######################################################################