support post == ".fits"

csst_common/data_manager.py

@@ -517,6 +517,15 @@ class CsstMsDataManager:
 
         """
         assert detector in self.available_detectors
+        if post == ".fits":
+            # no additional suffix
+            if self.ver_sim in ["C5.2", "C6.1"]:
+                fn = f"{self.telescope}_{self.instrument}_{self.project}_{self.obs_type}_{self.exp_start}_{self.exp_stop}_" \
+                     f"{self.obs_id}_{detector:02d}{post}"
+            else:
+                fn = f"{self.telescope}_{self.instrument}_{self.project}_{self.obs_type}_{self.exp_start}_{self.exp_stop}_" \
+                     f"{self.obs_id}_{detector:02d}_L1_V{self.version}{post}"
+        else:
             if self.ver_sim in ["C5.2", "C6.1"]:
                 fn = f"{self.telescope}_{self.instrument}_{self.project}_{self.obs_type}_{self.exp_start}_{self.exp_stop}_" \
                      f"{self.obs_id}_{detector:02d}_{post}"