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![[Figure 1]](ig5029fig1mag.jpg)
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Figure 1
Top panel: total intensity dependence of five CSPAD pixels at characteristic positions in a diffuse scattering intensity distribution (indicated by round color symbols in the inset). The intensity units (ordinate), in analog digital units (ADU), represent the pixel-dependent parameter dn used in the mathematical descriptions. The data from multiple acquired images were averaged into bins of the total intensity (abscissa) given in units of the mean ADU intensity over the entire CSPAD pattern represented by i in the text [see also discussion after equation (10) ![[link]](../../../../../../logos/arrows/s_arr.gif) ]. The thin solid black lines represent calibration fits as described in §5. The middle panel shows the nonlinear residuals after subtracting this first-order polynomial fit. The residuals from each pixel have been offset for visibility and error bars corresponding to the standard deviation in each bin have been added. The varying statistics in each intensity interval effect the point-to-point variation; the bottom panel shows the number of images in each bin. The red (ic) and black vertical lines (a, b, c) are example intensities used in Fig. 2. |
![[Figure 1]](ig5029fig1.jpg)
 | JOURNAL OF SYNCHROTRON RADIATION |
ISSN: 1600-5775
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