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Figure 8
Medium gain: (a) per pixel intensity as a function of X-ray intensity for three pixels (shown in the inset). The residual between the measured data and a linear fit is plotted below. The shaded area denotes the standard deviation in each intensity bin. (b) The relative deviation from linear at three different intensities (A, B and C), plotted for the uncorrected case (grey) and after a first-, second- and third-order correction. The three reference intensities are specified as vertical black lines in (a). |