diff --git a/csst_ms_mbi_img_L1_fits.md b/csst_ms_mbi_img_L1_fits.md
index e1c573a0f0ffd2a066e161f7630227ed4c208d8c..4f8a3db7483b94cc9827dc5fcd053ae7f0f088e8 100644
--- a/csst_ms_mbi_img_L1_fits.md
+++ b/csst_ms_mbi_img_L1_fits.md
@@ -16,6 +16,11 @@
 ### Header of instrument
 | keyword   | value                     | comment                       | fallback_value | type | module                  |
 |-----------|:--------------------------|-------------------------------|----------------|------|-------------------------|
+|SATURATE   | 1833.333333333333         |                                                |                | f32  |csst_ms_mbi_instrument   |         
+|CRCOUNT    | 66791                     |                                                |                | i8   |csst_ms_mbi_instrument   |
+|INST_V     | '0.0.1   '                |                                                |                | str  |csst_ms_mbi_instrument   |
+|INST-TOL   | '2022-12-30T10:18:53'     | Time of last modification                      |                | str  |csst_ms_mbi_instrument   |
+|DATASUM    | '1352015684'              | data unit checksum updated 2022-10-28T19:29:10 |                | str  |csst_ms_mbi_instrument   |
 
 ### Header of distortion
 
@@ -23,26 +28,26 @@
 |-----------|:--------------------------|-------------------------------|----------------|------|-------------------------|
 | RADESYS   | 'ICRS    '                | should be always 'ICRS'       | 'ICRS'                | str  | csst_ms_mbi_distortion  |                             
 | STAR_FIT  | 11                        |                               | 0                     | i8   | csst_ms_mbi_distortion  | 
-| PV1_0     | 0.003205383944913964      |                               | 0                     | f64  | csst_ms_mbi_distortion  |
-| PV1_1     | 0.8673020820536499        |                               | 0                     | f64  | csst_ms_mbi_distortion  |
-| PV1_2     | -0.2011989871377834       |                               | 0                     | f64  | csst_ms_mbi_distortion  |
-| PV1_3     | -0.2597214229472611       |                               | 0                     | f64  | csst_ms_mbi_distortion  |
-| PV1_4     | 0.4353828741811097        |                               | 0                     | f64  | csst_ms_mbi_distortion  |
-| PV1_5     | -0.5054216569802673       |                               | 0                     | f64  | csst_ms_mbi_distortion  |
-| PV1_6     | 0.1951474426617432        |                               | 0                     | f64  | csst_ms_mbi_distortion  |
-| PV2_0     | 0.00109803885992697       |                               | 0                     | f64  | csst_ms_mbi_distortion  |
-| PV2_1     | 0.9171065857705857        |                               | 0                     | f64  | csst_ms_mbi_distortion  |
-| PV2_2     | -0.04908256792722099      |                               | 0                     | f64  | csst_ms_mbi_distortion  |
-| PV2_3     | -0.09860562038448289      |                               | 0                     | f64  | csst_ms_mbi_distortion  |
-| PV2_4     | 0.07961855240788976       |                               | 0                     | f64  | csst_ms_mbi_distortion  |
-| PV2_5     | -0.2009224365497067       |                               | 0                     | f64  | csst_ms_mbi_distortion  |
-| PV2_6     | 0.1741954691884874        |                               | 0                     | f64  | csst_ms_mbi_distortion  |
-| RA_OFF    | -0.0                      | mas in unit                   | -99                   | f64  | csst_ms_mbi_distortion  |
-| DEC_OFF   | 0.0                       | mas in unit                   | -99                   | f64  | csst_ms_mbi_distortion  |
-| RA_STD    | 127.1                     | mas in unit                   | -99                   | f64  | csst_ms_mbi_distortion  |
-| DEC_STD   | 60.4                      | mas in unit                   | -99                   | f64  | csst_ms_mbi_distortion  |
-| RA_CEN    | 192.1940713422841         | the center of detector in ra  | -99                   | f64  | csst_ms_mbi_distortion  |
-| DEC_CEN   | 26.72643742371229         | the center of detector in dec | -99                   | f64  | csst_ms_mbi_distortion  |
+| PV1_0     | 0.003205383944913964      |                               | 0                     | f32  | csst_ms_mbi_distortion  |
+| PV1_1     | 0.8673020820536499        |                               | 0                     | f32  | csst_ms_mbi_distortion  |
+| PV1_2     | -0.2011989871377834       |                               | 0                     | f32  | csst_ms_mbi_distortion  |
+| PV1_3     | -0.2597214229472611       |                               | 0                     | f32  | csst_ms_mbi_distortion  |
+| PV1_4     | 0.4353828741811097        |                               | 0                     | f32  | csst_ms_mbi_distortion  |
+| PV1_5     | -0.5054216569802673       |                               | 0                     | f32  | csst_ms_mbi_distortion  |
+| PV1_6     | 0.1951474426617432        |                               | 0                     | f32  | csst_ms_mbi_distortion  |
+| PV2_0     | 0.00109803885992697       |                               | 0                     | f32  | csst_ms_mbi_distortion  |
+| PV2_1     | 0.9171065857705857        |                               | 0                     | f32  | csst_ms_mbi_distortion  |
+| PV2_2     | -0.04908256792722099      |                               | 0                     | f32  | csst_ms_mbi_distortion  |
+| PV2_3     | -0.09860562038448289      |                               | 0                     | f32  | csst_ms_mbi_distortion  |
+| PV2_4     | 0.07961855240788976       |                               | 0                     | f32  | csst_ms_mbi_distortion  |
+| PV2_5     | -0.2009224365497067       |                               | 0                     | f32  | csst_ms_mbi_distortion  |
+| PV2_6     | 0.1741954691884874        |                               | 0                     | f32  | csst_ms_mbi_distortion  |
+| RA_OFF    | -0.0                      | mas in unit                   | -99                   | f32  | csst_ms_mbi_distortion  |
+| DEC_OFF   | 0.0                       | mas in unit                   | -99                   | f32  | csst_ms_mbi_distortion  |
+| RA_STD    | 127.1                     | mas in unit                   | -99                   | f32  | csst_ms_mbi_distortion  |
+| DEC_STD   | 60.4                      | mas in unit                   | -99                   | f32  | csst_ms_mbi_distortion  |
+| RA_CEN    | 192.1940713422841         | the center of detector in ra  | -99                   | f32  | csst_ms_mbi_distortion  |
+| DEC_CEN   | 26.72643742371229         | the center of detector in dec | -99                   | f32  | csst_ms_mbi_distortion  |
 | DIST_V    | '1.0     '                | version of distortion         | '0.0'                 | str  | csst_ms_mbi_distortion  |
 | DIST_TOL  | '2022-12-29T16:36:47'     | distortion operation time     | '2022-12-29T16:36:47' | str  | csst_ms_mbi_distortion  |