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 KMOS pipeline product names start with "KM_".

Dynamic calibrations. The following types of dynamic calibration products of KMOS exist:

Code	type of file	PRO_CATG
PDRK	master dark	MASTER_DARK
PBPD	bad pixel mask	BADPIXEL_DARK
PFLT	master flat	MASTER_FLAT
PBPF	final bad pixel mask	BADPIXEL_FLAT
PEDG	slitlet localization	FLAT_EDGE
PXCL	slitlet localization	XCAL
PYCL	slitlet localization	YCAL
PLCL	wavelength calibration	LCAL
PILL	IFU illumination correction	ILLUM_CORR
PTEL	telluric spectrum	TELLURIC
PSPC	extracted standard star spectrum	STAR_SPEC
PTEG	general telluric spectrum	TELLURIC_GEN

Static calibrations. These are the codes for the static calibrations:

Code	type of file	PRO_CATG
GCAT	arc line catalog	ARC_LIST
GATM	atmospheric model data	ATMOS_MODEL
GSOL	solar spectrum	SOLAR_SPEC
GSTY	lookup table for spectral types	SPEC_TYPE_LOOKUP
GWBD	wavelength bands	WAVE_BAND
GREF	reference arc lines	REF_LINES
GRES	averaged responce curves	RESPONSE
GKER	kernel for molecfit	KERNEL_LIBRARY
GOHS	OH spectrum	OH_SPEC

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., 191015 for Oct 15, 2019.

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

Instrument parameters

The instrument parameters characterizing a setup are included in the product name. KMOS products have either the DIT as instrument set-up (for MASTER_DARK and BADPIXEL_DARK) or the wavelength band (IZ, YJ, H, HK, or K).

Static calibration products either have some setup part, or contain some self-explanatory character string.

File name extension

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

Examples

KM_PBPD_180912A_DIT60.fits: a bad pixel mask derived from a set of darks with DIT=60s, measured on 2018-09-12.

KM_PLCL_180912A_K.fits: a wavelength calibration product for the K band from the same date.