diff --git a/csst_common/data_manager.py b/csst_common/data_manager.py
index 464da371d80c8ec9653bfffc0a0f4f96f1bf02fe..cabe7337c1451a461cd38a5306ea6449f57b92c8 100644
--- a/csst_common/data_manager.py
+++ b/csst_common/data_manager.py
@@ -544,6 +544,28 @@ class CsstMsDataManager:
                      f"{self.obs_id}_{detector:02d}_L1_V{self.version}_{post}"
         return os.path.join(self.dir_l1, fn)
 
+    def get_refs(self, detector=6):
+        if self.crds.is_available:
+            return self.crds.retry(
+                self.crds.get_refs, 3,
+                file_path=self.l0_detector(detector)
+            )
+        else:
+            refs = dict()
+            if self.datatype == "mbi":
+                ref_types = ["bias", "dark", "ledflat", "shutter"]
+            else:
+                ref_types = ["bias", "dark", "ledflat"]
+            for ref_type in ref_types:
+                fp = os.path.join(
+                    self.path_aux,
+                    "C6.2_ref_crds",
+                    "csst_msc_ms_{}_{:02d}_{:06d}.fits".format(detector, detector, 1)
+                )
+                assert os.path.exists(fp), f"File not found: [{fp}]"
+                refs[ref_type] = fp
+            return refs
+
     def get_bias(self, detector=6):
         """ get bias data """
         fp = os.path.join(