# L1-MBI Data model

## File: *_{img/wht/flg}_L1_1.fits

### File contents
| HDU  | data                    | note       |
|------|-------------------------|------------|
| HDU0 | None                    | PrimaryHDU |
| HDU1 | reduced image (9k x 9k) | ImageHDU   |


### HDU0
| keyword | value | comment       | fallback_value | type | module    |
|---------|:------|---------------|----------------|------|-----------|
| SIMPLE  | True  | Fits standard | True           | bool | csst_sims |     

### HDU1

#### Header of `csst_ms_sls_instrument`

#### Header of `csst_ms_sls_position`

#### Header of `csst_ms_sls_qc1`