Figure 9
From: Spatial uniformity and temporal stability of pixel-to-pixel variation in mini-SiTian CMOS detector

The dependence on time of the standard deviation of monthly pixel-to-pixel variations. Black, green, and red dots denote the standard deviations of physical pixels, \(2 \times 2\), and \(4 \times 4\) binning, respectively. Blue dots represent the standard deviations of the median of four randomly selected non-adjacent physical pixels. Each colored line corresponds to the median value of data points of the same color.