Quality Control and
Data Processing

The names of all calibration pipeline products follow a certain naming convention. This is done to have human-readable rather than technical file names. The naming scheme has been chosen to have the type of product, its date of creation, and its pipeline-relevant setup values recognizable in the product name.

The general format of user-oriented product file names is the same for all VLT/VLTI instruments.

On the archive interface, the master calibrations can be associated to science files and downloaded. Then they carry technical filenames (the archive filename ARCFILE). In order to rename them to the original filenames, search for the fits header key ORIGFILE. The naming scheme of ORIGFILE is described here.

Instrument code

All product names start with two letters which are specific for the instrument. For instance: UVES product names start with 'UV', VISIR names with 'VR'.

Product category

The full value of the product category is coded in the FITS header key HIERARCH.ESO.PRO.CATG. A short form of this tag is encoded in four characters being unique per instrument:

1st letter	M or P	calibration product
	G	general (static) calibration product
2nd to 4th letter	...	type of product

Calibration products come in two flavours: dynamic ones (being updated regularly, short validity), and static ones (never or rarely updated). The static ones are also called 'general' because they often are not derived from raw data (like e.g. a line catalogue).

Both product types are stored in the archive and are available for download through the calSelector service.

All FORS2 pipeline product names start with "F2_".

Dynamic calibrations. There are following types of dynamic calibration products of FORS2:

Code	Type of file	Name Structure
MBIA	master bias	F2_MBIA_<DATE>#_<C><GAIN>_<BIN>
MDRK	master dark	F2_MDRK_<DATE>#_<C><GAIN>_<BIN>
MSFI	master screen flat (IMG)	F2_MSFI_<DATE>#_<FILT>_<C><GAIN>_<BIN><COLL>
MKFI	master sky flat (IMG)	F2_MKFI_<DATE>#_<FILT>_<C><GAIN>_<BIN><COLL>
MNFI	master night flat (IMG)	F2_MNFI_<DATE>#_<FILT>_<C><GAIN>_<BIN><COLL>
PSTI	reduced standard star (IMG)	F2_PSTI_<DATE>#_<C><GAIN>_<BIN><COLL>
PZPI	aligned photometry table (IMG)	F2_PZPI_<DATE>#_<C><GAIN><COLL>
PPBI	background of reduced standard star image(IMG)	F2_PPBI_<date>#_<filt>_C<chip>_<R>_<bin><coll>
PSRI	table with sources found (IMG)	F2_PSRI_<date>#_<filt>_C<chip>_<R>_<bin><coll>
PFLL	reduced LAMP CHECK data (LSS)	F2_PFLL_<DATE>#<LAMP>_G<GRISM>_<FILT>_S<SLIT>_<GAIN>_<BIN>_<COLL>
MNFL	normalized master flat field (LSS)	F2_MNFL_<DATE>#_G<GRISM>_<FILT>_S<SLIT>_<C><GAIN>_<BIN>_<COLL>
PWCL	dispersion coefficients (LSS)	F2_PWCL_<DATE>#_G<GRISM>_<FILT>_S<SLIT>_<C><GAIN>_<BIN>_<COLL>
PSRL	spectral resolution table (LSS)	F2_PSRL_<DATE>#_G<GRISM>_<FILT>_S<SLIT>_<C><GAIN>_<BIN>_<COLL>
PRLL	reduced arc lamp image (LSS)	F2_PRLL_<DATE>#_G<GRISM>_<FILT>_S<SLIT>_<C><GAIN>_<BIN>_<COLL>
PWML	wavelength map image (LSS)	F2_PWML_<DATE>#_G<GRISM>_<FILT>_S<SLIT>_<C><GAIN>_<BIN>_<COLL>
PSLL	slit location table (LSS)	F2_PSLL_<DATE>#_G<GRISM>_<FILT>_S<SLIT>_<C><GAIN>_<BIN>_<COLL>
PSOL	line shifts from sky lines (STD-LSS)	F2_PSOL_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PWSL	wavelength map image (STD-LSS)	F2_PWSL_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PDCL	dispersion coefficients from sky line correction (STD-LSS)	F2_PDCL_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PUKL	unmapped sky background (STD-LSS)	F2_PUKL_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PMAL	mapped image (STD-LSS)	F2_PMAL_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PMKL	mapped sky background (STD-LSS)	F2_PMKL_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PUSL	unmapped image (STD-LSS)	F2_PUSL_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PMSL	mapped image (STD-LSS)	F2_PMSL_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
POTL	table with object positions (STD-LSS)	F2_POTL_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PRKL	reduced sky spectrum (STD-LSS)	F2_PRKL_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PRSL	reduced object spectra (STD-LSS)	F2_PRSL_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PREL	error of reduced object spectra (STD-LSS)	F2_PREL_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
MMSM	mapped master screen flat field (MOS)	F2_MMSM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
MMNM	mapped normalized master flat field (MOS)	F2_MMNM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
MSFM	master screen flat field (MOS)	F2_MSFM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
MNFM	normalized master flat field (MOS)	F2_MNFM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PWCM	dispersion coefficients (MOS)	F2_PWCM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PSRM	spectral resolution table (MOS)	F2_PSRM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PRLM	reduced arc lamp image (MOS)	F2_PRLM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PWMM	wavelength map image (MOS)	F2_PWMM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PSLM	slit location table (MOS)	F2_PSLM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PCCM	curvature coefficients table (MOS)	F2_PCCM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PSMM	spatial map image (MOS)	F2_PSMM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
MMSP	mapped master screen flat field (PMOS)	F2_MMSP_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
MMNP	mapped normalized master flat field (PMOS)	F2_MMNP_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
MSFP	master screen flat field (PMOS)	F2_MSFP_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
MNFP	normalized master flat field (PMOS)	F2_MNFP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PWCP	dispersion coefficients (PMOS)	F2_PWCP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PSRP	spectral resolution table (PMOS)	F2_PSRP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PLRP	reduced arc lamp image (PMOS)	F2_PRLP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PWMP	wavelength map image (PMOS)	F2_PWMP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PSLP	slit location table (PMOS)	F2_PSLP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PCCP	curvature coefficients table (PMOS)	F2_PCCP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PSMP	spatial map image (PMOS)	F2_PSMP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
MNFS	normalized master flat field (LSS-like MOS)	F2_MNFS_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PWCS	dispersion coefficients (LSS-like MOS)	F2_PWCS_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PSRS	spectral resolution table (LSS-like MOS)	F2_PSRS_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PRLS	reduced arc lamp image (LSS-like MOS)	F2_PRLS_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PWMS	wavelength map image (LSS-like MOS)	F2_PWMS_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PSLS	slit location table (LSS-like MOS)	F2_PSLS_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PSOM	line shifts from sky lines (STD-MOS)	F2_PSOM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PWSM	wavelength map image (STD-MOS)	F2_PWSM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PDCM	dispersion coefficients from sky line correction (STD-MOS)	F2_PDCM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PUKM	unmapped sky background (STD-MOS)	F2_PUKM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PMAM	mapped image (STD-MOS)	F2_PMAM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PMKM	mapped sky background (STD-MOS)	F2_PMKM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PUSM	unmapped image (STD-MOS)	F2_PUSM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PMSM	mapped image (STD-MOS)	F2_PMSM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
POTM	table with object positions (STD-MOS)	F2_POTM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PRKM	reduced sky spectrum (STD-MOS)	F2_PRKM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PRSM	reduced object spectra (STD-MOS)	F2_PRSM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PREM	error of reduced object spectra (STD-MOS)	F2_PREM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PSTM	table with response function and efficiency (STD-MOS)	F2_PSTM_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PSOP	line shifts from sky lines (STD-PMOS)	F2_PSOP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PWSP	wavelength map image (STD-PMOS)	F2_PWSP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PDCP	dispersion coefficients from sky line correction (STD-PMOS)	F2_PDCP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PUKP	unmapped sky background (STD-PMOS)	F2_PUKP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PMAP	mapped image (STD-PMOS)	F2_PMAP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PMKP	mapped sky background (STD-PMOS)	F2_PMKP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PUSP	unmapped image (STD-PMOS)	F2_PUSP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PMSP	mapped image (STD-PMOS)	F2_PMSP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
POTP	table with object positions (STD-PMOS)	F2_POTP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PRKP	reduced sky spectrum (STD-PMOS)	F2_PRKP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PRSP	reduced object spectra (STD-PMOS)	F2_PRSP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PREP	error of reduced object spectra (STD-PMOS)	F2_PREP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PRAP	polarization angle (STD-PMOS)	F2_PRAP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PEAP	error of polarization angle (STD-PMOS)	F2_PEAP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PRLP	L parameter (STD-PMOS)	F2_PRLP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PELP	error of L parameter (STD-PMOS)	F2_PELP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PRQP	Q parameter (STD-PMOS)	F2_PRQP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PEQP	error of Q parameter (STD-PMOS)	F2_PEQP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PRUP	U parameter (STD-PMOS)	F2_PRUP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PEUP	error of U parameter (STD-PMOS)	F2_PEUP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PRVP	V parameter (STD-PMOS)	F2_PRVP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PEVP	error of V parameter (STD-PMOS)	F2_PEVP_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
MMSX	mapped master screen flat field (MXU)	F2_MMSX_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
MMNX	mapped normalized master flat field (MXU)	F2_MMNX_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
MSFX	master screen flat field (MXU)	F2_MSFX_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
MNFX	normalized master flat field (MXU)	F2_MNFX_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PWCX	dispersion coefficients (MXU)	F2_PWCX_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PSRX	spectral resolution table (MXU)	F2_PSRX_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PRLX	reduced arc lamp image (MXU)	F2_PRLX_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PWMX	wavelength map image (MXU)	F2_PWMX_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PSLX	slit location table (MXU)	F2_PSLX_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PCCX	curvature coefficients table (MXU)	F2_PCCX_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>
PSMX	spatial map image (MXU)	F2_PSMX_<DATE>#_G<GRISM>_<FILT>_S<MASK>_<C><GAIN>_<BIN><COLL>

where:
<DATE>=Observing date as YYMMDD, e.g. 030401
#=sequential counter, e.g. A, B ...
<C>=chip number, e.g. C2
<GRISM>=Grism Name, e.g. 150I
<FILT>=Filter Name without _, e.g. VBESS or GG435
<SLIT>=Slit Width, e.g. 07 for 0.7"
<MASK>=MOS Checksum, e.g. m1955 (MOS), or MASK ID, e.g. p915243 (MXU)
<BIN>=Binning, e.g. 1x1
<COLL>=Collimator, e.g. s(tandard) or h(igh)
<LAMP>=Lamp Name, e.g. FlatBlue+1
<GAIN>=gain e.g. lo(w) or hi(gh)

Examples

F2_MBIA_030425B_C2lo_1x1.fits
F2_MDRK_030420A_C1hi_2x2.fits
F2_MSFI_030420A_VBESS_C2lo_2x2s.fits
F2_MKFI_030423A_VBESS_C2lo_2x2s.fits
F2_PSTI_030421A_VBESS_C2lo_2x2s.fits
F2_PPBI_030421A_VBESS_C2lo_2x2s.fits

F2_PFLL_061023A_FlatRed3_G300V_GG435_S10C2hi_2x2s.fits

F2_MNFL_061026A_G300I_OG590_S13_C2hi_2x2s.fits
F2_PRLL_061026A_G300I_OG590_S13_C2hi_2x2s.fits
F2_PWML_061026A_G300I_OG590_S13_C2hi_2x2s.fits

F2_MNFM_061020A_G300I_OG590_Sm2432_C1hi_2x2s.fits
F2_PRLM_061020A_G300I_OG590_Sm2432_C1hi_2x2s.fits
F2_PSMM_061020A_G300I_OG590_Sm2432_C1hi_2x2s.fits
F2_PWMM_061020A_G300I_OG590_Sm2432_C1hi_2x2s.fits

F2_MNFS_061029A_G300V_GG375_Sp33693_C1hi_2x2s.fits
F2_PRLS_061029A_G300V_GG375_Sp33693_C1hi_2x2s.fits
F2_PWMS_061029A_G300V_GG375_Sp33693_C1hi_2x2s.fits

F2_MNFX_061027A_G600z_OG590_Sp915243_C2hi_2x2s.fits
F2_PRLX_061027A_G600z_OG590_Sp915243_C2hi_2x2s.fits
F2_PSMX_061027A_G600z_OG590_Sp915243_C2hi_2x2s.fits
F2_PWMX_061027A_G600z_OG590_Sp915243_C2hi_2x2s.fits

Static calibrations

These are the codes for static calibrations:

Code	Type of file	Name Structure
GSTI	standard star catalogue (imaging)	F2_GSTI_<date>#_<author>
GPHO	table with photometric coefficients for the CCD	F2_GPHO_<date>#_<CCD_name>
GSTF	table with flux standard star measurements	F2_GSTS_<date>#_<std_name>
GEXT	atmospheric extinction table	F2_GEXT_<date>#_ALL
GGRS	table with grism parameters	F2_GGRS_<date>#_G<grism>_<filt>
GLIN	line catalogue	F2_GLIN_<date>#_G<grism>_<filt>
GRWC	table with chromatism information of the retarder wave plate	F2_GRWC_<date>_ALL

where:
<date>=Observing date as YYMMDD, e.g. 030401
#=sequential counter, e.g. A, B ...
<grism>=Grism Name, e.g. 150I
<filt>=Filter Name without _ or /, e.g. VBESS, uHIGH, FILT57120, or GG435
<author>= Author of the catalogue, i.e. stetson or landolt
<CCD_name>=name of the CCD, e.g. Marlene (in case of the grism tables, which are valid for both CCDs, it is NormaMarlene)

Examples:

F2_GSTI_080101A_stetson.fits
F2_GPHO_020331A_CCID20-14-5-3.fits
F2_GGRS_060930A_G600RI_GG435.fits
F2_GLIN_061001A_600B_free.fits

The remaining part of the names follow the same convention as for the dynamic products (see below).

Date of origin, version

The date of origin is identical to the date of the raw data measurement. It is coded like, e.g., 141015 for Oct 15, 2014.

The version of a file is indicated by capital letters, starting with A. Versioning is supported when reasonable, otherwise it is always A.

Extension

All product files have extension .fits. They have either image format or binary table format.