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Reference frames


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Reference Frames
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Reference frames

In order to assist Paranal Science Operations with the assessment of data quality, sets of screen shots of reference frames are collected here, mostly taken in standard configurations. These reference data can be used to verify the quality of the daily collected calibrations (for instance to see if the correct filter has been used, if the flux level and profile is correct, if a feature is normal or not etc.). The screenshots are always taken on raw files, ready for visual inspection.

For daily work, the screenshots are linked to the product quality monitor, under the link 'RAW'. For all data types taken on that date, and for all supported setups, the screenshots are available for blinking against the new data.

The main part of daily quality control is based on pipeline-processed data products. Their quality is checked with scores and QC reports which are also available on the daily product quality monitor. The checks of raw file screenshots should be added as supplementary service, being sensitive to effects not necessarily visible in pipeline products.

On this reference frames web site, all available reference frame screenshots for a given instrument are collected and can be compiled together. They are sorted by data types and setups.

Reference frames are incrementally updated when they become older than half a year. In addition, they will be updated whenever necessary (for instance when a new grism is commissioned, or after a technical intervention, etc.).

This web site is maintained by QC Garching. We are happy to receive suggestions about additions etc.

Information about pipeline processing can be found under QC home >> 'instrument name' >> pipeline.