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The NIRI detector response is a function of the counts in the pixel, the exposure time, the read mode, the bias level, the ROI, and the vertical position on the detector. We have developed a Python script which calculates and applies a per-pixel linearity correction when run on raw or nprepared Gemini NIRI data.

Download the latest version of here. is beta software which will eventually be included in the Gemini PYRAF NIRI package. Any questions, comments or suggestions for improvements are welcome, and should be sent to Andrew Stephens (astephens at gemini dot edu).