Comparison of a cut along column 512 of the normalised flat for the red grism taken on 2013 March 3 (black) and the normalised flat taken on 2012 October 6 (red) between pixels 400 and 500. The two flats are essentially identical, indicating that the “noise” seen in Fig. 17 is in fact ~5% pixel-to-pixel variation in the detector.
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