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Perform routine monitoring of FUV XDL detector dark rate. The main purpose is to look for evidence of a change in the dark rate comma both to track on orbit time dependence and to check for a detector problem developing. Variations of count rates as a function of orbital positions will be analyzed to study the effect of SAA. Stacked images will help us study the spatial distribution of dark rates on the detector.

对FUV XDL探测器（FUV XDL detector）的暗计数率进行常规监测。其主要目的是寻找暗计数率变化的证据，既要跟踪在轨时间相关性，也要检查探测器是否出现潜在问题。分析计数率随轨道位置变化的规律，以研究南大西洋异常区（SAA）的影响。叠加图像（Stacked images）将有助于研究探测器上暗计数率的空间分布。