diff --git a/csst_mci_sim/csst_mci_sim.py b/csst_mci_sim/csst_mci_sim.py
index 8541ff2ada9f6ae4040a7f4920db8b0f21ef58e6..471e3104c2999a153e2887bb95383661007cb5fe 100644
--- a/csst_mci_sim/csst_mci_sim.py
+++ b/csst_mci_sim/csst_mci_sim.py
@@ -1493,36 +1493,11 @@ class MCIsimulator():
         
         self._createEmpty()
         
-        now=datetime.utcnow()
-               
-        data_time=now.strftime("%Y-%m-%d-%H-%M-%S")
-        
-        print('simnumber', simnumber)   
 
-        self.log = lg.setUpLogger(self.result_path+'/log_Data/MCIsim_'+source+'_'+data_time+'_Num_'+str(simnumber)+'.log')
-        
-        #print('logger.handlers=', self.log.handlers)
-        
-        self.log.info('-------STARTING A NEW SIMULATION------------')
-        
-        self.log.info('The exposure order is  %i ' % simnumber )
-        
-        #load instrument model, these values are also stored in the FITS header
-        
-        self.information['G_filters']=["F275W",  "F280N","NUV",   "WU",   "CBU",   "F343N",  "u",      "F373N", "F395N",  "F336W"]
-        self.information['R_filters']=["F487N", "F502N", "CBV",   "r",    "F656N", "F658N",  "F467M",  "F555W", "F606W",  "F673N"]        
-        self.information['I_filters']=["z",      "y",    "F815N", "CBI",  "F925N", "F960M",  "F968N",  "F845M" ,"F850LP" ,"F814W"]
         
-        #### load telescope efficiency data
-        print(self.information['dir_path'])
-        
-        self.tel_eff=np.load(self.information['dir_path']+'MCI_inputData/tel_eff/tel_eff.npy',allow_pickle=True).item()
         
-        #### load MCI filter data
-        self.filterP=np.load(self.information['dir_path']+'MCI_inputData/MCI_filters/mci_filterPWTC.npy',allow_pickle=True).item()    
+        ###########################################################################
         
-    ###########################################################################
-    
         now=datetime.utcnow()
         #data_time=now.strftime("%Y-%m-%d-%H-%M-%S")
         result_day=now.strftime("%Y-%m-%d")
@@ -1556,6 +1531,37 @@ class MCIsimulator():
             os.mkdir(self.result_path+'/ori_Sky')
             os.mkdir(self.result_path+'/sky_Data')
             os.mkdir(self.result_path+'/PSF_Data')
+                
+                
+        now=datetime.utcnow()
+               
+        data_time=now.strftime("%Y-%m-%d-%H-%M-%S")
+        
+        print('simnumber', simnumber)     
+
+        self.log = lg.setUpLogger(self.result_path+'/log_Data/MCIsim_'+source+'_'+data_time+'_Num_'+str(simnumber)+'.log')
+        
+        #print('logger.handlers=', self.log.handlers)
+        
+        self.log.info('-------STARTING A NEW SIMULATION------------')
+        
+        self.log.info('The exposure order is  %i ' % simnumber )
+        
+        #load instrument model, these values are also stored in the FITS header
+        
+        self.information['G_filters']=["F275W",  "F280N","NUV",   "WU",   "CBU",   "F343N",  "u",      "F373N", "F395N",  "F336W"]
+        self.information['R_filters']=["F487N", "F502N", "CBV",   "r",    "F656N", "F658N",  "F467M",  "F555W", "F606W",  "F673N"]        
+        self.information['I_filters']=["z",      "y",    "F815N", "CBI",  "F925N", "F960M",  "F968N",  "F845M" ,"F850LP" ,"F814W"]
+        
+        #### load telescope efficiency data
+        print(self.information['dir_path'])
+        
+        self.tel_eff=np.load(self.information['dir_path']+'MCI_inputData/tel_eff/tel_eff.npy',allow_pickle=True).item()
+        
+        #### load MCI filter data
+        self.filterP=np.load(self.information['dir_path']+'MCI_inputData/MCI_filters/mci_filterPWTC.npy',allow_pickle=True).item()    
+        
+