SSTRED: Data- and metadata-processing pipeline for CHROMIS and CRISP

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Volume 653 (September 2021)

A&A, 653 (2021) A68

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Table 3.

Metadata database tables.

Name	Range	Types of metadata
`datasets`	Datasets	Date and time of a data-set start, type ^(a), instrument name
`configs`	Group of files	Camera name ^(b), gain, exposure time, frame dimensions, number of frames per file, average cadence etc.
`bursts`	Burst of exposures ^(c)	Date and time of beginning of burst, prefilter, FPI tuning, scan number, frame number of first frame, detector temperature.
`chromis_frames`	Individual frames	Time, frame number, intensity statistics.
`crisp_frames`	Individual frames	Like `chromis_frames` + liquid crystal state
`crisp_polcal_frames`	Individual frames	Like `crisp_frames` + quarter-wave plate angle, linear polarizer angle.

Notes. Hierarchical tables, parents on top.

^(a)

Types of datasets are darks, flats, science, etc.

^(b)

The camera name here is the functional name of a camera, like Crisp-R (CRISP NB camera in the beam reflected by polarizing beamsplitter), Chromis-W (CHROMIS WB camera), etc.

^(c)

By burst we refer to a group of image frames with identical tuning and polarization states, collected during a short period of time, to be processed with the assumption that the Sun does not change. For CHROMIS this is a single file, and for CRISP it is a group of files.

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