diff --git a/csst_common/data_manager.py b/csst_common/data_manager.py
index bf1d69b79cf3927169df231e00fcea1dd5a29b90..322ec754710898907da1c7d09155a99cb2166d2a 100644
--- a/csst_common/data_manager.py
+++ b/csst_common/data_manager.py
@@ -64,9 +64,6 @@ class CsstMsDataManager:
         The L1 directory.
     path_aux : str
         The aux data directory (bias, flat, dark).
-    dir_pcref : str
-        The position calibration reference data directory.
-        Will be removed in the next version.
     _exp_id : int
         The exposure ID.
     _exp_start : int
@@ -83,6 +80,8 @@ class CsstMsDataManager:
         The image type signature for science images. Defualts to ``SCI`` for C5.2 simulation.
     _l0_post : str
         The postfix. Defaults to ``L0_1`` for C5.2 simulation.
+    dfs_mode : bool
+        DFS mode. If True, ``CsstMsDataManager`` will use DFS.
 
     Examples
     --------
@@ -115,7 +114,7 @@ class CsstMsDataManager:
                  dir_l0: str = ".",
                  dir_l1: str = ".",
                  path_aux: str = "",  # bias dark flat
-                 dir_pcref: str = "",  # deprecated
+                 dfs_mode: bool = False,
                  _exp_id: int = 100000100,
                  _exp_start: int = 20270810081950,
                  _exp_stop: int = 20270810082220,
@@ -124,7 +123,6 @@ class CsstMsDataManager:
                  _survey: str = "MS",
                  _imagetype: str = "SCI",
                  _l0_post: str = "L0_1",
-                 _dfs_mode: bool = False,
                  ):
 
         # version
@@ -164,12 +162,11 @@ class CsstMsDataManager:
         self._survey = _survey
         self._imagetype = _imagetype
         self._l0_post = _l0_post
-        self._dfs_mode = _dfs_mode
+        self.dfs_mode = dfs_mode
 
         # data directory
         self.dir_l0 = dir_l0
         self.dir_l1 = dir_l1
-        self.dir_pcref = dir_pcref
         self.path_aux = path_aux
 
         # record hard code names in history
@@ -180,7 +177,7 @@ class CsstMsDataManager:
         raise NotImplementedError("from_dfs is currently not available!")
 
     @staticmethod
-    def from_dir(ver_sim="C5.2", datatype="mbi", dir_l0=".", dir_l1=".", dir_pcref="", path_aux=""):
+    def from_dir(ver_sim="C5.2", datatype="mbi", dir_l0=".", dir_l1=".", dir_pcref="", path_aux="", dfs_mode=False):
         """ initialize the multi-band imaging data manager """
 
         assert ver_sim in ["C5.2", ]
@@ -210,7 +207,7 @@ class CsstMsDataManager:
                                  dir_l0=dir_l0,
                                  dir_l1=dir_l1,
                                  path_aux=path_aux,  # bias dark flat
-                                 dir_pcref=dir_pcref,  # deprecated
+                                 dfs_mode=dfs_mode,
                                  _exp_id=_exp_id,
                                  _exp_start=_exp_start,
                                  _exp_stop=_exp_stop,
@@ -367,7 +364,7 @@ class CsstMsDataManager:
 
     def get_sls_info(self):
         """ Get the target SLS image header info and return. """
-        if self._dfs_mode:
+        if self.dfs_mode:
             raise NotImplementedError()
         else:
             assert len(self.target_detectors) == 1
@@ -376,14 +373,14 @@ class CsstMsDataManager:
 
     def get_mbi_info(self):
         """ Get all MBI image header info and return as a table. """
-        if self._dfs_mode:
+        if self.dfs_mode:
             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):
+    def quickstart(ver_sim="C5.2", datatype="mbi", dir_l1=".", exposure_id=100, dfs_mode=False):
         """Quick dataset generator for tests on dandelion or PMO
 
         Parameters
@@ -396,6 +393,8 @@ class CsstMsDataManager:
             output directory
         exposure_id : int
             The serial number of the exposure. 20-154 for C5.2.
+        dfs_mode : bool
+            If True, use DFS.
 
         Returns
         -------
@@ -412,30 +411,26 @@ class CsstMsDataManager:
             dir_l0 = "/nfsdata/share/csst_simulation_data/Cycle-5-SimuData/multipleBandsImaging/" \
                      "NGP_AstrometryON_shearOFF/MSC_{:07d}/".format(exposure_id)
             path_aux = "/nfsdata/users/cham/L1Test/ref_C5.2/MSC_{}_*_{:02d}_combine.fits"
-            dir_pcref = "/nfsdata/users/csstpipeline/L1Pipeline/msc/gaia_dr3/"
         elif hostname == "dandelion" and datatype == "sls":
             dir_l0 = "/nfsdata/share/csst_simulation_data/Cycle-5-SimuData/slitlessSpectroscopy/" \
                      "NGP_AstrometryON_shearOFF_Spec/MSC_{:07d}/".format(exposure_id)
             path_aux = "/nfsdata/share/csst_simulation_data/Cycle-5-SimuData/slitlessSpectroscopy/csst_{:02d}{}.fits"
-            dir_pcref = ""
 
         # PMO
         elif hostname == "ubuntu" and datatype == "mbi":
             dir_l0 = "/share/simudata/CSSOSDataProductsSims/data/CSSTSimImage_C5/" \
                      "NGP_AstrometryON_shearOFF/MSC_{:07d}/".format(exposure_id)
             path_aux = "/data/sim_data/MSC_0000100/ref/MSC_{}_*_{:02d}_combine.fits"
-            dir_pcref = "/home/user/L1Pipeline/msc/gaia_dr3/"
         elif hostname == "ubuntu" and datatype == "sls":
             dir_l0 = "/share/simudata/CSSOSDataProductsSims/data/CSSTSimImage_C5/" \
                      "NGP_AstrometryON_shearOFF_Spec/MSC_{:07d}/".format(exposure_id)
             path_aux = ""
-            dir_pcref = ""
 
         else:
             raise ValueError("@DM: invalid hostname {} or datatype {}!".format(hostname, datatype))
 
         return CsstMsDataManager.from_dir(
-            ver_sim=ver_sim, datatype=datatype, dir_l0=dir_l0, dir_l1=dir_l1, dir_pcref=dir_pcref, path_aux=path_aux)
+            ver_sim=ver_sim, datatype=datatype, dir_l0=dir_l0, dir_l1=dir_l1, path_aux=path_aux, dfs_mode=dfs_mode)
 
 
 class CsstMbiDataManager: