j_imaging

This component deconvolves the shadowgrams to make sky images, performs a search for sources and derives flux estimates.

Before OSA5 these tasks were divided into three components (j_ima_basic_recon, j_ima_src_find, and
j_ima_cor_intensity) but the new component j_ima_iros does it all. The advantages are e.g. more reliable flux estimates, better images, and better vignetting correction.

This script calls the following executables:

• j_ima_iros
• q_identify_srcs

Parameters specific to the IMA level are given in Table 15.

Table 15: Parameters specific to the IMA level

Name	Type	Description
IMA_makeNewBPL	boolean	Do you want to create a new backprojection file ? default: no
IMA_newBackProjFile	string	Base name of new backprojection file default: ``''
IMA_detAccLimit	integer	Acceptance limit in JMXi-DETE-MOD data structure. Possible values: 1 - 65535 default: 16384
IMA_skyImageDim	integer	Sky image dimension. Possible values: 1:255, 2:511. default: 2
IMA_useDeadAnodes	boolean	Do you want to include dead anodes areas ? default: no
IMA_maxNumSources	integer	Max number of sources in IROS loop default: 10
IMA_edgeEnhanceFactor	real	Edge enhancement factor. It is used to convert the sky-images to significance maps by amplifying the peaks near the edge relative to those near the center default: 1.0
IMA_loopLimitPeak	real	Fractional peak power to stop IROS loop default: 0.025
IMA_detSigSingle	real	Detection significance for source acceptance default: 12.0
IMA_skyRadiusFactor	real	Sky radius limit factor default: 1.0
IMA_radiusLimit0	real	Detector radius limit E 6 keV (mm) default: 120.0
IMA_radiusLimit1	real	Detector radius limit 6 E 12 keV (mm) default: 120.0
IMA_radiusLimit2	real	Detector radius limit 12 E 20 keV (mm) default: 117.0
IMA_radiusLimit3	real	Detector radius limit E 20 keV (mm) default: 110.0
IMA_interactionDepth	real	Mean depth of interaction in the detector (mm) default: 3.0
IMA_hotPixelLimit	real	Hot pixel limit factor above average default: 4.0
IMA_skyImagesOut	string	Type of output sky images. There are the following types: RECTIFIED: Rectified (cleaned) intensity maps (in counts/cm /s). VARIANCE: Variance maps. RECONSTRUCTED: Reconstructed Residual+Sources maps (in counts/cm /s) which only differ from the RECTIFIED maps if sources have been found. RAWINTENSITY: Raw intensity (strength) maps (in counts), for which the vignetting correction is not applied. RESIDUAL: Intensity map (in counts/cm /s) after all found source contributions have been subtracted. EXPOSURE: The exposure map PIF: activate the ”PIF-weighted” image generation algorithm (not to be used with mosaic_spec) Only the first five letters are required. default: ``RECONSTRUCTED,VARIANCE''
IMA_dolBPL	sting	DOL of backprojection file list default: ``''
IMA_bkgShdDOL	string	DOL of background shadowgrams default: ``''
IMA_signifLim	integer	Minimum number of pixels to make a contribution to a sky image default: ``25''
IMA_illumNorm	integer	Flag for special re-normalization default: ``0''
IMA_colHreduc	real	[mm] Reduction of collimator height for BPL production default: ``0.''
IMA_detImagesOut	boolean	Should the images used for source detection be in output? default: ``NO''
IMA_userImagesOut	boolean	Do you want the user defined images to be written? default: ``YES''
IMA_pixelFold	integer	Type of pixelfold 0:none, 1:NL, 2:NJW, 3:NL 1 D default: ``1''
IMA_useTrace	boolean	Flag for tracing function calls default: ``no''
IMA_tracestring	string	Control string for use of trace default: ``0123456789ABCDEF''