diff --git a/csst_dfs_commons/convert/date_utils.py b/csst_dfs_commons/convert/date_utils.py
index 13872dfaf9cd655040c7049b344c7fb1fe439a30..03a1d716bc8bf0cd5fe2ca07ab7a0b380439f187 100644
--- a/csst_dfs_commons/convert/date_utils.py
+++ b/csst_dfs_commons/convert/date_utils.py
@@ -17,4 +17,7 @@ def format_time_ms(float_time):
     local_time = time.localtime(float_time)
     data_head = time.strftime("%Y-%m-%d %H:%M:%S", local_time)
     data_secs = (float_time - int(float_time)) * 1000
-    return "%s.%03d" % (data_head, data_secs)
\ No newline at end of file
+    return "%s.%03d" % (data_head, data_secs)
+
+def str_to_datetime(str_time):
+    return datetime.strptime(str_time.split('.')[0], '%Y-%m-%d %H:%M:%S')
\ No newline at end of file
diff --git a/csst_dfs_commons/models/facility.py b/csst_dfs_commons/models/facility.py
index a22b20e39c2d774378b735ceb7fe76d9c268753e..b5bbf242fcc9b87ba3bddf033623a8fa5df50e50 100644
--- a/csst_dfs_commons/models/facility.py
+++ b/csst_dfs_commons/models/facility.py
@@ -2,6 +2,20 @@ import dataclasses
 from typing import List,Dict
 from .common import BaseModel, default_field
 
+@dataclasses.dataclass
+class UserRecord(BaseModel):
+    id: int = 0
+    user_name: str=""
+    true_name: str=""
+    email: str=""
+    passwd: str=""
+    organization: str=""
+    create_time: str=""
+    status: int = 0
+    last_login_ip: str=""
+    last_login_time: str=""
+    role: str=""
+
 @dataclasses.dataclass
 class Observation(BaseModel):
     id: int = 0
diff --git a/csst_dfs_commons/models/level2.py b/csst_dfs_commons/models/level2.py
new file mode 100644
index 0000000000000000000000000000000000000000..bc2c635543bad76f246aea3ea1bed964fe5d3f42
--- /dev/null
+++ b/csst_dfs_commons/models/level2.py
@@ -0,0 +1,40 @@
+import dataclasses
+from .common import BaseModel
+
+@dataclasses.dataclass
+class Level2Record(BaseModel):
+    id: int = 0
+    level0_id: str = ''
+    level1_id: int = 0
+    brick_id: int = 0
+    module_id: str = ''
+    object_name : str=""
+    data_type: str=""
+    filename : str=""
+    file_path: str=""
+    qc2_status: int = 0
+    qc2_time: str=""
+    prc_status: int = 0
+    prc_time: str=""
+    create_time: str=""
+    update_time: str=""
+    pipeline_id: str=""
+    import_status: int = 0
+
+@dataclasses.dataclass
+class Level2TypeRecord(BaseModel):
+    data_type: str=""
+    module_id: str = ''
+    key_column : str=""
+    hdu_index: int=0
+    demo_filename : str=""
+    demo_file_path: str=""
+    ra_column: str=""
+    dec_column: str=""
+    update_time: str=""
+    create_time: str=""
+    import_status: int = 0
+
+def filter_table_name(data_type):
+    return '_'.join(data_type.split('-'))
+
diff --git a/csst_dfs_commons/utils/fits.py b/csst_dfs_commons/utils/fits.py
index fe7344204bb8e794aed1cc33fae5812ab4988298..c64eb43fe7dd2c17eaa3b809b5cd35989ecea21e 100644
--- a/csst_dfs_commons/utils/fits.py
+++ b/csst_dfs_commons/utils/fits.py
@@ -6,6 +6,7 @@ from astropy.io import fits
 from astropy import wcs
 import numpy as np
 import healpy as hp
+from csst_dfs_commons.models.constants import PI, DEFAULT_NSIDE
 
 def get_header_value(key: str, headers, default_value = None):
     try:
@@ -74,3 +75,34 @@ def hdul_of_healpix_ids(hdulist, nside=256):
     healpixids = hp.query_polygon(nside, xyzpoly.T)
 
     return healpixids
+
+def heapix_sql_condition(ra, dec, radius, ra_col = 'ra', dec_col = 'dec', nside = DEFAULT_NSIDE):
+    arcDec = (PI / 180) * dec
+    whereSql = f"abs((180./{PI}) * ACOS(SIN({PI} * {dec_col}/180) * SIN({arcDec}) + COS({PI} * {dec_col}/180) * COS({arcDec}) * COS(({PI}/180) * ({ra_col} - {ra})))) < {radius}"
+
+    heapix_ids = get_healpix_ids(ra, dec, radius, nside)
+    nside_column = "NS%dHIdx" % (nside,)
+    whereZoneSql = "%s in (%s)" % \
+                (nside_column, ','.join([str(i) for i in heapix_ids]))
+    
+    return whereZoneSql, whereSql
+    
+def level2_heapix_sql_condition(ra, dec, radius, ra_col = 'ra', dec_col = 'dec', nside = DEFAULT_NSIDE):
+    x2 = f"cos({dec_col})*cos({ra_col})"
+    y2 = f"cos({dec_col})*sin({ra_col})"
+    z2 = f"sin({dec_col})"
+
+    x1 = f"cos({dec})*cos({ra})"
+    y1 = f"cos({dec})*sin({ra})"
+    z1 = f"sin({dec})"
+
+    distance = f"pow(({x2}-{x1}),2)+pow(({y2}-{y1}),2)+pow(({z2}-{z1}),2)"
+
+    heapix_ids = get_healpix_ids(ra, dec, radius, nside)
+    nside_column = "brick_id"
+    whereZoneSql = "%s in (%s)" % \
+                (nside_column, ','.join([str(i) for i in heapix_ids]))
+    
+    whereSql = f"{distance} <= 4*pow({radius}/2, 2) and {whereZoneSql}"
+
+    return whereSql
\ No newline at end of file