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product names
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Data product names

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.


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.

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