Cosmic-ray rejection and readout efficiency for large-area arrays

被引:48
作者
Fixsen, DJ
Offenberg, JD
Hanisch, RJ
Mather, JC
Nieto-Santisteban, MA
Sengupta, R
Stockman, HS
机构
[1] Space Telescope Sci Inst, Baltimore, MD 21218 USA
[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
关键词
D O I
10.1086/316626
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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.
引用
收藏
页码:1350 / 1359
页数:10
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