Cosmic‐Ray Rejection and Readout Efficiency for Large‐Area Arrays

We present an algorithm to optimally process uniformly sampled array image data obtained with a nondestructive readout. The algorithm discards full wells, removes cosmic‐ray (particle) hits and other glitches, and makes a nearly optimum estimate of the signal on each pixel. The algorithm also compre...

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Bibliographic Details
Published in:Publications of the Astronomical Society of the Pacific 2000-10, Vol.112 (776), p.1350-1359
Main Authors: Fixsen, D. J, Offenberg, J. D., Hanisch, R. J., Mather, J. C., Nieto‐Santisteban, M. A., Sengupta, R., Stockman, H. S.
Format: Article
Language:English
Subjects:
Algorithms
Cosmic rays
Data processing
Information retrieval noise
Noise reduction
Photons
Pixels
Ratios
Signal noise
Statistical variance
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Summary:We present an algorithm to optimally process uniformly sampled array image data obtained with a nondestructive readout. The algorithm discards full wells, removes cosmic‐ray (particle) hits and other glitches, and makes a nearly optimum estimate of the signal on each pixel. The algorithm also compresses the data. The computer requirements are modest, and the results are robust. The results are shown and compared to results of Fowler‐sampled and ‐processed data. Nonideal detector performance may require some additional code, but this is not expected to cost much processing time. Known types of detector faults are addressed.
ISSN:0004-6280
1538-3873
DOI:10.1086/316626