diff --git a/csst_common/data_manager.py b/csst_common/data_manager.py
index d6eff406c6428d52e3a6d842f877d7d8953a6016..bab8e034aaa7f448b3688032934d3af008f74f3f 100644
--- a/csst_common/data_manager.py
+++ b/csst_common/data_manager.py
@@ -15,6 +15,7 @@ import glob
 import re
 
 from astropy.io import fits
+from astropy.table import Table
 
 from .params import CSST_PARAMS as CP
 
@@ -361,6 +362,21 @@ class CsstMsDataManager:
         self.hardcode_history.append(dict(hdcd=fp, comment=comment))
         return fp
 
+    def get_sls_info(self, use_dfs=False):
+        if use_dfs:
+            raise NotImplementedError()
+        else:
+            assert len(self.target_detectors) == 1
+            header = fits.getheader(self.l0_detector(self.target_detectors[0]), ext=1)
+        return header
+
+    def get_mbi_info(self, use_dfs=False):
+        if use_dfs:
+            raise NotImplementedError()
+        else:
+            info = Table.read("/nfsdata/share/csst_simulation_data/Cycle-5-SimuData/slitlessSpectroscopy/t_mbi_l1.fits")
+        return info
+
     @staticmethod
     def quickstart(ver_sim="C5.2", datatype="mbi", dir_l1=".", exposure_id=100):
         """Quick dataset generator for tests on dandelion or PMO