From 7f0a6a7a23ad0fe7523fb655aee2d9a51ed53a3b Mon Sep 17 00:00:00 2001 From: Jiafeng Date: Mon, 6 Mar 2023 15:06:16 +0000 Subject: [PATCH] Update data_model.md --- docs/source/ifs/data_model.md | 74 ++++++++++++++++++++++++++++++++++- 1 file changed, 73 insertions(+), 1 deletion(-) diff --git a/docs/source/ifs/data_model.md b/docs/source/ifs/data_model.md index 31b7c9d..db8950d 100644 --- a/docs/source/ifs/data_model.md +++ b/docs/source/ifs/data_model.md @@ -1 +1,73 @@ -# Data model \ No newline at end of file +# L1-IFS Data model + +## File: CSST_IFS_CUBE_{OBJ_id}_{VER_cube}_{LIN/LOG}_{STM_cube}.fits + +### File contents + + +| HDU | data | note | +|------|-------------------------|------------| +| HDU0 | None | PrimaryHDU | +| HDU1 | FLUX | ImageHDU | +| HDU2 | IVAR | ImageHDU | +| HDU3 | MASK | ImageHDU | +| HDU4 | EXP_NUM | ImageHDU | +| HDU5 | LSF | ImageHDU | +| HDU6 | WEIGHT_MARTIX | ImageHDU | +| HDU7 | rRSS_FILE_LIST | BinTableHDU| + + +### HDU0 + +| keyword | value | comment | fill value | type | module | +|---------|:------|---------------|---------------|------|--------------| +| SIMPLE | True | Fits standard | True | bool |csst_ifs_cube | + +### HDU0 + +#### Header of `csst_ifs_cube` + +| keyword | value | comment | fill value | type | module | +|-----------|:----------------------|---------------------------------------------------|--------------|------|--------------------------| +| RSS_VER |: R6100 | version of RSS code | RXXXX |str | csst_ifs_cube | +| CUB_VER |: C6100 | version of CUBE code | CXXXX |str | csst_ifs_cube | +| COV_VER |: C6100 | version of CUBE code | CXXXX |str | csst_ifs_cube | +| LSF_VER |: C6100 | version of CUBE code | CXXXX |str | csst_ifs_cube | +| FLUXUNIT |: '1E-17 erg/s/cm2/A/arcsec2' | unit of flux | '1E-17 erg/s/cm2/A/arcsec2'|str | csst_ifs_cube | +| FLUXSCALE |: 1 | Intensity unit scaling | 1 |I8 | csst_ifs_cube | +| FLUXZERO |: 0 | Intensity zeropoint | 0 |I8 | csst_ifs_cube | +|TELESCOP |: CSST | Telescope used to acquire data | CSST |str | csst_ifs_cube | +|INSTRUMENT |: IFS | Identifier for instrument used to acquire data | IFS |str | csst_ifs_cube | +|OBJID |: 174053.8-534326' | ID of Object(in the form of HHMMSS.S+DDMMSS) | hhmmss.sddmmss|str | csst_ifs_cube | +|NEXP |: 50 | number of science exposures combined | 0 |I8 | csst_ifs_cube | +|EXPTIME |: 60000 | Total exposure time | 0 |f32 | csst_ifs_cube | +|MJDMIN |: 2459955.2275463 | Minimum OBS MJD across all exposures | -9999 |f32 | csst_ifs_cube | +|MJDMAX |: 2459955.39282407 | Maximum OBS MJD across all exposures | -9999 |f32 | csst_ifs_cube | +|MJDMED |: 2459955.34074074 | Median OBS MJD across all exposures | -9999 |f32 | csst_ifs_cube | +|WCSCAL_VER |: A6101 | Version of WCS calibration | AXXX |str | csst_ifs_cube | +|WCSCAL_P |: | file for WCS calibration | "?" |str | csst_ifs_cube | +|RADECSYS |: FK5 | Frame of reference of coordinates | FK5 |str | csst_ifs_cube | +|EQUINOX |: 2000.0 | 　 | 2000.0 |str | csst_ifs_cube | +|OBJRA |: 265.22407917 |Object R.A. (J2000 deg.) | -9999 |f32 | csst_ifs_cube | +|OBJDEC |: -53.72406389 |Object Dec. (J2000 deg.) | -9999 |f32 | csst_ifs_cube | +|CENRA |: 265.2240087483441 |Plate center R.A. (J2000 deg.) R4 | -9999 |f32 | csst_ifs_cube | +|CENDEC |: -53.72410555664603 |Plate center Dec. (J2000 deg.) R4 | -9999 |f32 | csst_ifs_cube | +|CTYPE3 |: 'LIN' | The type of wavelength array | 'LIN' |str | csst_ifs_cube | +|CRPIX3 |:1.0 | Starting pixel | -9999 |f32 | csst_ifs_cube | +|CRVAL3 |: 3500.0 | The central wavelength wv0 of first pixel | -9999 |f32 | csst_ifs_cube | +|CD3_3 |: 1.75 | wavelength dispersion per pixel | -9999 |f32 | csst_ifs_cube | +|CUNIT3 |: 'Angstrom' | unit of wavelength | 'Angstrom' |str | csst_ifs_cube | +|CRPIX1 |: 49.0 | Reference pixel | -9999 |f32 | csst_ifs_cube | +|CRPIX2 |: 52.0 | Reference pixel | -9999 |f32 | csst_ifs_cube | +|CRVAL1 |: 265.22407917 | RA of reference point | -9999 |f32 | csst_ifs_cube | +|CRVAL2 |: -53.72406389 | Dec of reference point | -9999 |f32 | csst_ifs_cube | +|CD1_1 |: -2.7777777777777E-05 | Coordinate transformation matrix element | -9999 |f32 | csst_ifs_cube | +|CD1_2 |: 0.0 | Coordinate transformation matrix element | -9999 |f32 | csst_ifs_cube | +|CD2_1 |: 0.0 | Coordinate transformation matrix element | -9999 |f32 | csst_ifs_cube | +|CD2_2 |: 2.7777777777778E-05 | Coordinate transformation matrix element | -9999 |f32 | csst_ifs_cube | +|CTYPE1 |: 'RA---TAN' | Declination, gnomonic projection | 'RA---TAN' |str | csst_ifs_cube | +|CTYPE2 |: 'DEC--TAN' | Declination, gnomonic projection | 'DEC--TAN' |str | csst_ifs_cube | +|CUNIT1 |: 'deg' | Units of coordinate increment and value | 'deg' |str | csst_ifs_cube | +|CUNIT2 |: 'deg' | Units of coordinate increment and value | 'deg' |str | csst_ifs_cube | +|EBVGAL |: 0 | Galactic reddening E(B-V) | -9999 |f32 | csst_ifs_cube | +|CHECKSUM |: 0 |checksum | 1 |I8 | csst_ifs_cube | -- GitLab