SWS-Detector Glitch Effect Correction

Details SWS-Detector Glitch Effect Correction SWS-Detector Glitch Effect Correction

Aug 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000exa....10..199w&link_type=abstract

Experimental Astronomy, v. 10, Issue 2/3, p. 199-214 (2000).

Astronomy and Astrophysics

Astronomy

Scientific paper

We describe how the ISO-SWS (Infrared Space Observatory - Short Wavelength Spectrometer) software packages detect various glitch events i.e. high energy particle hits effecting the SWS detectors. A rough classification of glitch types is given. The events cause an instantaneous change in the slope of the SWS detector read outs followed by a distortion of the further samples, so called glitch tails. As a consequence the S/N ratio and photometric accuracy are reduced. Different strategies, how to remove the resulting distortion of the detector read-out-ramp after a hit, are presented. The methods of the basic SWS software packages, the Pipeline and Interactive Analysis, will be discussed. The Pipeline has to treat glitch effects automatically. The Interactive Analysis system provides the user with a comfortable Graphical User Interface (GUI) for Trend Analysis, detailed analysis of certain glitches and the testing of new algorithms.

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