diff --git a/csst_ifs_sim/csst_ifs_sim.py b/csst_ifs_sim/csst_ifs_sim.py
index 913226e22ac24977da36c9c221e2cf1ceff04081..a1661068b12ec225300e24d0cfc4523e7941525f 100644
--- a/csst_ifs_sim/csst_ifs_sim.py
+++ b/csst_ifs_sim/csst_ifs_sim.py
@@ -4669,8 +4669,7 @@ class IFSsimulator():
 
                     # energy_red=energy_red+sum(photons_red.flux)
 
-        ####################################################################################
-
+        #####
         self.image_b = blue_img.array
         self.image_r = red_img.array
 
@@ -4678,10 +4677,8 @@ class IFSsimulator():
 
         data_time = now.strftime("%Y-%m-%d")
         # write the actual file
-
         bluefile = os.path.join(self.result_path, 'original_Calibration/IFS_' +
-                                self.source + '_' + d ata_time + '_' +
-                                str(self.simnumber)+'_B_original.fits')
+                                self.source + '_' + data_time + '_' + str(self.simnumber)+'_B_original.fits')
         redfile = os.path.join(self.result_path, 'original_Calibration/IFS_' +
                                self.source+'_'+data_time+'_'+str(self.simnumber)+'_R_original.fits')