do not clear dir_l1 in this stage

        pass

    @staticmethod

    def from_dfs(obs_id="100000100", datatype="mbi", dir_l0="/L1Pipeline/L0", dir_l1="/L1Pipeline/L1",

                 dfs_mode=True, dfs_node="pml"):

    def from_dfs(

            obs_id="100000100",

            datatype="mbi",

            dir_l0="/L1Pipeline/L0",

            dir_l1="/L1Pipeline/L1",

            dfs_mode=True,

            dfs_node="pml"

    ):

        """ Initialize CsstMsDataManager from DFS. """

        # (clear and) make directories

        if os.path.exists(dir_l0):

            os.system(f"rm -rf {dir_l0}/*")

        else:

            os.mkdir(dir_l0)

        if os.path.exists(dir_l1):

            os.system(f"rm -rf {dir_l1}/*")

        else:

            os.mkdir(dir_l1)

        # if os.path.exists(dir_l1):

        #     os.system(f"rm -rf {dir_l1}/*")

        # else:

        #     os.mkdir(dir_l1)

        os.chdir(dir_l1)

        print(f"Query obs_id={obs_id} ...", end="")