Translator Disclaimer
12 July 2008 Solutions for quality control of multi-detector instruments and their application to CRIRES and VIMOS
Author Affiliations +
Quality Control (QC) of calibration and science data is an integral part of the data flow process for the ESO Very Large Telescope (VLT) and has guaranteed continuous data quality since start of operations. For each VLT instrument, dedicated checks of pipeline products have been developed and numerical QC parameters to monitor instrumental behavior have been defined. The advent of the survey telescopes VISTA and VST with multi-detector instruments imposes the challenge to transform the established QC process from a detector-by-detector approach to operations that are able to handle high data rates and guarantee consistent data quality. In this paper, we present solutions for QC of multi-detector instruments and report on experience with these concepts for the operational instruments CRIRES and VIMOS. Since QC parameters scale with the number of detectors, we have introduced the concept of calculating averages (and standard deviations) of parameters across detectors. This approach is a powerful tool to evaluate trends that involve all detectors but is also able to detect outliers on single detectors. Furthermore, a scoring system has been developed which compares QC parameters for new products to those from already existing ones and gives an automated judgment about data quality. This is part of the general concept of information on demand: detailed investigations are only triggered on a selected number of products.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Burkhard Wolff, Reinhard W. Hanuschik, Wolfgang Hummel, and Mark Neeser "Solutions for quality control of multi-detector instruments and their application to CRIRES and VIMOS", Proc. SPIE 7016, Observatory Operations: Strategies, Processes, and Systems II, 70160S (12 July 2008);


VLT service mode operations at seven years
Proceedings of SPIE (June 30 2006)
Data reduction pipelines for the Very Large Telescope
Proceedings of SPIE (June 29 2006)
Quality control of VLT FLAMES/GIRAFFE data
Proceedings of SPIE (September 16 2004)
Quality control of VLT-UVES data
Proceedings of SPIE (January 02 2002)
Quality control for UVES-fiber at the VLT-Kueyen Telescope
Proceedings of SPIE (September 16 2004)

Back to Top