diff --git a/csst_common/data_manager.py b/csst_common/data_manager.py
index 8e9526172b339cfc9a8199cc3a4241507ff37bad..4b8d9c3c8fd394ee124e5eefcd0f7cede9b89c62 100644
--- a/csst_common/data_manager.py
+++ b/csst_common/data_manager.py
@@ -247,9 +247,7 @@ class CsstMsDataManager:
             self.clear_dir(self.dir_l1)
 
         # L1 whitelist
-        self.l1_whitelist = [
-            self.l1_file(name="csst-l1")
-        ]
+        self.l1_whitelist = [self.l1_file(name="mrs.csv"), ]
         for detector in self.target_detectors:
             if self.datatype == "mbi":
                 self.l1_whitelist.append(self.l1_detector(detector=detector, post="img_L1.fits"))
@@ -278,11 +276,13 @@ class CsstMsDataManager:
         self.custom_flat = None
 
         self.stamps = stamps
+        if self.stamps != "":
+            self.l1_whitelist.append(self.l1_file(self.stamps))
         self.write_stamp()
 
     def write_stamp(self):
-        if self.stamps is not None and not self.stamps == "":
-            with open(self.stamps, "a+") as f:
+        if self.stamps is not None and self.stamps != "":
+            with open(self.l1_file(self.stamps), "a+") as f:
                 f.write(f"{time.Time.now().isot.replace('.', ',')}+0800\n")
 
     @staticmethod