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ramp_getron.pro (JWST Pipeline routines in IDL)

JWST Pipeline routines in IDL

A collection mantained by M. Robberto

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ramp_getron.pro


This procedure creates a 2-D RON map by subtracting from a dark current ramp the linear fit, and estimating the residuals stdev for each pixel

top source RAMP_GETRON

JWST Data Processing - NIRCam Cryo tests

RAMP_GETRON, data0, fit_params, RON

Creates a RON map subtracting from a dark current ramp the linear fit and estimating the residuals stdev for each pixel

Parameters

data0 in required type=fltarr(2048,2048,Ngroup)

ramp datacube to be analyzed

fit_params in required type=fltarr(2048,2048,2)

Two arrays with the intercept and slope derived from the linear fit

RON out required type=fltarr(2048,2048)

2-D array with thre RON map :File Comments: Given a ramp, this procedure removes, for each pixel, the intercept/slope value from the linear fit. This makes the ramp, for each pixel, a zero average stack. In other words, one subtracts bias and dark current from the signal. Then take the stdev of the zero average ramp to get the RON

Examples

IDL> RAMP_GETRON,data0,fit_params,RON

Author information

Author:

M. Robberto, created 25 Apr. 201

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Modification date: Fri May 3 17:15:22 2013
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