Validation of Up-the-Ramp Sampling with Cosmic Ray Rejection on IR Detectors

Abstract

We examine cosmic ray rejection methodology on data collected from InSb and Si:As detectors. The application of an Up-the-Ramp sampling technique with cosmic ray identification and mitigation is the focus of this study. This technique is valuable for space-based observatories which are exposed to high-radiation environments. We validate the Up-the-Ramp approach on radiation-test data sets with InSb and Si:As detectors which were generated for SIRTF. The Up-the-Ramp sampling method studied in this paper is over 99.9% effective at removing cosmic rays and preserves the structure and photometric quality of the image to well within the measurement error.

30 pages, 13 figures. Accepted for publication in the PASP, 25 October 2000

References in corpus (1)

• Cosmic Ray Rejection and Readout Efficiency for Large-Area Arrays

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