Update csst_ms_sls2d.md

| PV2_4      | 0.07961855240788976  |                              | 0              | f32  | csst_ms_sls_position |

| PV2_5      | -0.2009224365497067  |                              | 0              | f32  | csst_ms_sls_position |

| PV2_6      | 0.1741954691884874   |                              | 0              | f32  | csst_ms_sls_position |

| FIT_STAR   | 10                   |                              | 0              | i8   | csst_ms_sls_position |

| STAR_FIT   | 10                   | number of the stars          | 0              | i8   | csst_ms_sls_position |

| RA_OFF     | -0.0                 | mas in unit                  | -99            | f32  | csst_ms_sls_position |

| DEC_OFF    | 0.0                  | mas in unit                  | -99            | f32  | csst_ms_sls_position |

| RA_STD     | 127.1                | mas in unit                  | -99            | f32  | csst_ms_sls_position |

| DEC_STD    | 60.4                 | mas in unit                  | -99            | f32  | csst_ms_sls_position |

| FIT_S    | 0                    | 0 for success, 1 for failure | 1              | i8   | csst_ms_sls_position |

| RA_RMS     | 127.1                | mas in unit                  | -99            | f32  | csst_ms_sls_position |

| DEC_RMS    | 60.4                 | mas in unit                  | -99            | f32  | csst_ms_sls_position |

| RA_CEN     |                  | center of detector in ra     | 0              | f32  | csst_ms_sls_position |

| DEC_CEN    |                  | center of detector in dec    | 0              | f32  | csst_ms_sls_position |

| STA_DIST   | 0                    | 0 for done, 1 for failure    | 1              | i8   | csst_ms_sls_position |

#### Header of `csst_ms_sls_qc1`

| keyword    | value                | comment                      | fallback_value | type | module               |