diff --git a/csst_dfs_api/facility/level1.py b/csst_dfs_api/facility/level1.py
index c19670239c21c595266fbd84affb80a67c17ad0b..9827d5082d151502a9c58742fb5f103b9f0dc913 100644
--- a/csst_dfs_api/facility/level1.py
+++ b/csst_dfs_api/facility/level1.py
@@ -16,7 +16,7 @@ class Level1DataApi(object):
             obs_id: [str]
             level0_id: [str]
             module_id: [str]
-            data_type: [str]
+            file_type: [str]
             create_time : (start, end)
             qc1_status : [int]
             prc_status : [int]
@@ -112,6 +112,7 @@ class Level1DataApi(object):
 
         :param kwargs: Parameter dictionary, key items support:
             level0_id: [str]
+            obs_id: [str]
             module_id: [str]
             detector_no: [str]
             file_type : [str]
diff --git a/csst_dfs_api/ifs/level1.py b/csst_dfs_api/ifs/level1.py
index 062f9a021903b4753da959309a7db0de9925e1fd..ca95229d96fe30f8605db7bed1c2505e491667c9 100644
--- a/csst_dfs_api/ifs/level1.py
+++ b/csst_dfs_api/ifs/level1.py
@@ -16,14 +16,14 @@ class Level1DataApi(object):
             obs_id: [str]
             level0_id: [str]
             module_id: [str]
-            data_type: [str]
+            file_type: [str]
             create_time : (start, end)
             qc1_status : [int]
             prc_status : [int]
             filename: [str]
-            ra_obj: float = None
-            dec_obj: float = None,
-            radius: float = None
+            ra_obj: float
+            dec_obj: float
+            radius: float
             rss_id: [str]
             cube_id: [str]
             obj_id: [str]
@@ -31,6 +31,7 @@ class Level1DataApi(object):
             build: [int]
             detector_no: [str]
             object_name: [str]
+            
             limit: limits returns the number of records,default 0:no-limit
         
         :returns: csst_dfs_common.models.Result
@@ -93,6 +94,8 @@ class Level1DataApi(object):
 
         :param kwargs: Parameter dictionary, key items support:
             level0_id: [str]
+            obs_id: [str]
+            module_id: [str]            
             detector_no: [str]
             rss_id: [str]
             cube_id: [str]
@@ -104,7 +107,7 @@ class Level1DataApi(object):
             pipeline_id : [str]
             pmapname : [str]
             build : [str],
-            refs : list[tuple]  for example: [('dark', 'csst_msc_dark_001.rmap'), ('bias', 'csst_msc_bias_001.rmap'), ('flat', 'csst_msc_flat_001.rmap')]
+            refs : dict  for example: {'dark': 'csst_msc_dark_001.rmap', 'bias': 'csst_msc_bias_001.rmap', 'flat': 'csst_msc_flat_001.rmap'}
         
         :returns: csst_dfs_common.models.Result
         '''