set all detectors by default

csst_common/data_manager.py

@@ -147,6 +147,9 @@ class CsstMsDataManager:
             self.available_detectors = [int(re.split(r"[_.]", fp)[7]) for fp in fps_img]
             self.available_detectors.sort()
 
+        # set all available detectors by default
+        self.set_detectors(None)
+
     @staticmethod
     def glob_image(dir_l0, ver_sim="C5"):
         """ glob files in L0 data directory """