diff --git a/csst_mci_sim/csst_mci_sim.py b/csst_mci_sim/csst_mci_sim.py
index fed74f3766908bf4163a80d07fcf14562af28585..54bc11e31e57b16b8a1403a37e113a504ca0d029 100644
--- a/csst_mci_sim/csst_mci_sim.py
+++ b/csst_mci_sim/csst_mci_sim.py
@@ -5232,11 +5232,11 @@ class MCIsimulator():
             print('applyPRNUeffect')
 
         ####################################################################
-        if self.source in sourcelist:
-            if self.cosmicRays:
+        # if self.source in sourcelist:
+        #     if self.cosmicRays:
                 
-                self.addCosmicRays()
-                print('addCosmicRays finisth')
+        #         self.addCosmicRays()
+        #         print('addCosmicRays finisth')
                      
         ##################################################
         if self.skyback: