diff --git a/csst_common/data_manager.py b/csst_common/data_manager.py
index e8cb0589f5d912adc1cdf1ead750acb6be46ec29..20af96e12748a935ba0e9f624978d26bf27638e7 100644
--- a/csst_common/data_manager.py
+++ b/csst_common/data_manager.py
@@ -1067,6 +1067,7 @@ class CsstMsFile(dict):
             print(rec)
             raise ae
         header = rec["data"].header
+        header["filter"] = rec["data"]["filter"]
         return CsstMsFile(
             filepath=os.path.join(dfs_root, rec["data"].file_path),
             ver_sim=ver_sim,
@@ -1078,7 +1079,6 @@ class CsstMsFile(dict):
         return f"CsstMsFile(filepath=\"{self.filename}\", ver_sim=\"{self.ver_sim}\", dir_out=\"{self.dir_out}\")"
 # file = CsstMsFile(
 #     "L1/MSC/SCI/62173/10160000108/CSST_MSC_MS_SCI_20290206174352_20290206174622_10160000108_21_L1_V01.fits")
-#
 # file = CsstMsFile.from_l1id(id=17796, dfs_root="/share/dfs")
 # file = CsstMsFile.from_l1id(id=12853, dfs_root="/share/dfs")
 # CsstMsFile("CSST_MSC_MS_SCI_20280716184136_20280716184406_10160000099_14_L1_V01_IMG.fits")