diff --git a/csst_common/data_manager.py b/csst_common/data_manager.py
index e7a99b1c4ba7156d8423032be0b31525886dd2a4..a7ec1a2ecc0b721ba52a0462fe0f40fe21fa69d9 100644
--- a/csst_common/data_manager.py
+++ b/csst_common/data_manager.py
@@ -262,8 +262,8 @@ class CsstMsDataManager:
 
         # parse info
         _telescope, _instrument, _survey, _imagetype, \
-            _exp_start, _exp_stop, _exp_id, \
-            _detector, *_l0_post, _ext = re.split(r"[_.]", fps_img[0])
+        _exp_start, _exp_stop, _exp_id, \
+        _detector, *_l0_post, _ext = re.split(r"[_.]", fps_img[0])
 
         _exp_start = int(_exp_start)
         _exp_stop = int(_exp_stop)
@@ -567,3 +567,7 @@ class CsstMsDataManager:
     def dfs_l1_query(self, obs_id, detector):
         """ Query L1 data from DFS. """
         pass
+
+
+# temporarily compatible with old interface
+CsstMbiDataManager = CsstMsDataManager