# L1-MBI Data model ## File: \*\_*_L1_1.fits ### File contents | HDU | data | note | | ---- | ----------------------- | ---------- | | HDU0 | None | PrimaryHDU | | HDU1 | reduced SCI (9k x 9k) | ImageHDU | | HDU2 | reduced ERR (9k x 9k) | ImageHDU | | HDU3 | reduced DQ (9k x 9k) | ImageHDU | ### HDU0 | keyword | value | comment | fallback_value | type | module | | ------- | :---- | ------------- | -------------- | ---- | --------- | | SIMPLE | True | Fits standard | | bool | csst_ms_sls_instrument | | BITPIX | 8 | array data value | | i8 | csst_ms_sls_instrument| | NAXIS | 0 | Number of axes | | i8 |csst_ms_sls_instrument| | EXTEND | T | file may contain standard extensions | | bool | csst_ms_sls_instrument| | NEXTEND | 3 | Number of file extensions | | i8 | csst_ms_sls_instrument | | CRDS_VER | '0.0.1 ' | Version of CRDS file selection software used| | str | csst_ms_sls_instrument | | R_GAIN | '*.gain.fits' | Gain reference file name | | str | csst_ms_sls_instrument | | R_READN | '*.rn.fits' | Read noise reference file name | | str | csst_ms_sls_instrument | | R_SATURA | '*.sat.fits' | Saturation reference file name | | str | csst_ms_sls_instrument | | R_MASK | '*.msk.fits' | Mask reference file name | | str | csst_ms_sls_instrument | | R_BIAS | '*bias.fits' | SuperBias reference file name | | str | csst_ms_sls_instrument | | R_DARK | '*dark.fits' | Dark reference file name | | str | csst_ms_sls_instrument | | R_DFLAT | '*flat.fits' | Detector Flat reference file name | | str | csst_ms_sls_instrument | | R_SFLAT | '*flat.fits' | Spectrograph Flat reference file name | | str | csst_ms_sls_instrument | | S_DQINI | True | Data Quality Initialization | | bool | csst_ms_sls_instrument | | S_SATURA | True | Saturation Checking | | bool | csst_ms_sls_instrument | | S_ERR | True | Error Initialization | | bool | csst_ms_sls_instrument | | S_BIAS | True | Bias correction | | bool | csst_ms_sls_instrument | | S_DARK | True | Dark correction | | bool | csst_ms_sls_instrument | | S_FLAT | True | Flat field correction | | bool | csst_ms_sls_instrument | | DCP_VER | '0.0.1 ' | detector-level calibration pipeline version | | str | csst_ms_sls_instrument | | DCP_TIME | '2022-12-30T10:18:53' | pipeline processing time | | str | csst_ms_sls_instrument | | HISTORY |'**step complete.' | record processing message | | str | csst_ms_sls_instrument | ### HDU1 #### Header of `csst_ms_sls_instrument` | keyword | value | comment | fallback_value | type | module | | -------- | :-------------------- | ------------------------------------------- | -------------- | ---- | ---------------------- | | EXTNAEM | SCI | extension name | | str | csst_ms_sls_instrument | | EXTVER | 1 | extension version number | | i8 | csst_ms_sls_instrument | | BUNIT | electrons/s | brightness units | | str | csst_ms_sls_instrument | | NGOODPIX | 84794368 | number of good pixels | | f32 | csst_ms_sls_instrument | | SDQFLAGS | 31743 | serious data quality flags | | i16 | csst_ms_sls_instrument | | GOODMAX | 260.0 | maxmum value of good pixels | | f32 | csst_ms_sls_instrument | | GOODMIN | -0.001 | minmum value of good pixels | | f32 | csst_ms_sls_instrument | | GOODMEAN | 0.3 | mean value of good pixels | | f32 | csst_ms_sls_instrument | | SNRMIN | 187.4 | minmum signal to noise of good pixels | | f32 | csst_ms_sls_instrument | | SNRMAX | 1.2 | maxmum signal to noise of good pixels | | f32 | csst_ms_sls_instrument | | SNRMEAN | 3.38 | average of the dark values subtracted | | f32 | csst_ms_sls_instrument | #### Header of `csst_ms_sls_position` | keyword | value | comment | fallback_value | type | module | | ---------- | :------------------- | ---------------------------- | -------------- | ---- | -------------------- | | CTYPE1 | 'RA---TPV' | | 'RA---TPV' | str | csst_ms_sls_position | | CTYPE2 | 'DEC--TPV' | | 'DEC--TPV' | str | csst_ms_sls_position | | CUNIT1 | 'deg ' | | 'deg' | str | csst_ms_sls_position | | CUNIT2 | 'deg ' | | 'deg' | str | csst_ms_sls_position | | RADESYS | 'ICRS ' | | 'ICRS' | str | csst_ms_sls_position | | PV1_0 | 0.003205383944913964 | | 0 | f32 | csst_ms_sls_position | | PV1_1 | 0.8673020820536499 | | 0 | f32 | csst_ms_sls_position | | PV1_2 | -0.2011989871377834 | | 0 | f32 | csst_ms_sls_position | | PV1_3 | -0.2597214229472611 | | 0 | f32 | csst_ms_sls_position | | PV1_4 | 0.4353828741811097 | | 0 | f32 | csst_ms_sls_position | | PV1_5 | -0.5054216569802673 | | 0 | f32 | csst_ms_sls_position | | PV1_6 | 0.1951474426617432 | | 0 | f32 | csst_ms_sls_position | | PV2_0 | 0.00109803885992697 | | 0 | f32 | csst_ms_sls_position | | PV2_1 | 0.9171065857705857 | | 0 | f32 | csst_ms_sls_position | | PV2_2 | -0.04908256792722099 | | 0 | f32 | csst_ms_sls_position | | PV2_3 | -0.09860562038448289 | | 0 | f32 | csst_ms_sls_position | | 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 | | 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_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 | | ---------- | :------------------- | ---------------------------- | -------------- | ---- | -------------------- | | QC1_S 　　　| 0 | 0 for success, 1 for failure | 1 | i8 | csst_ms_sls_qc1 | | VER_QC1 | '0.0.1' | QC1 pipeline version | '0.0.1' | str | csst_ms_sls_qc1 | | QC1_FLAG | 0 | quality flags | -99 | i16 | csst_ms_sls_qc1 | ### HDU2 #### Header of `csst_ms_sls_instrument` | keyword | value | comment | fallback_value | type | module | | -------- | ----------- | --------------------------- | -------------- | ----- | ---------------------- | | XTENSION | IMAGE | Image extension | | str | csst_ms_sls_instrument | | BITPIX | -32 | bits per data value | | i8 | csst_ms_sls_instrument | | NAXIS | 2 | Number of array dimensions | | i8 | csst_ms_sls_instrument | | NAXIS1 | 9216 | Size of the axis | | i8 | csst_ms_sls_instrument | | NAXIS2 | 9232 | Size of the axis | | i8 | csst_ms_sls_instrument | | PCOUNT | 0 | number of parameters | | i8 | csst_ms_sls_instrument | | GCOUNT | 1 | number of groups | | i8 | csst_ms_sls_instrument | | EXTNAME | ERR | extension name | | str | csst_ms_sls_instrument | | EXTVER | 1 | extension version number | | i8 | csst_ms_sls_instrument | | BUNIT | electrons/s | brightness units | | str | csst_ms_sls_instrument | ### HDU3 #### Header of `csst_ms_sls_instrument` | keyword | value | comment | fallback_value | type | module | | -------- | ----------- | --------------------------- | -------------- | ---- | ---------------------- | | XTENSION | IMAGE | Image extension | | str | csst_ms_sls_instrument | | BITPIX | 16 | bits per data value | | i8 | csst_ms_sls_instrument | | NAXIS | 2 | Number of array dimensions | | i8 | csst_ms_sls_instrument | | NAXIS1 | 9216 | Size of the axis | | i8 | csst_ms_sls_instrument | | NAXIS2 | 9232 | Size of the axis | | i8 | csst_ms_sls_instrument | | PCOUNT | 0 | number of parameters | | i8 | csst_ms_sls_instrument | | GCOUNT | 1 | number of groups | | i8 | csst_ms_sls_instrument | | EXTNAME | DQ | extension name | | str | csst_ms_sls_instrument | | EXTVER | 1 | extension version number | | i8 | csst_ms_sls_instrument | | BUNIT | unitless | brightness units | | str | csst_ms_sls_instrument |