HESSI Data Object Parameters:  Pixon Algorithm Parameters

 

Links to other parameter tables:
     All      Spectrum (Standard, Info, All)      Lightcurve (Standard, Info, All)     
     Image:     General (Standard, Info, All),   Clean,   Pixon,   Forward Fit,   MEM_NJIT,   VIS_FWDFIT,   UV_SMOOTH  
Spectral Response Matrix          Observing Summary          Simulation

 

Name Main Object Control / Info* Description Default Units Range Type** User Level*** Class
pixon_background_model Image Control If set, attempt a background estimation from the residuals. -- -- -- int Expert hsi_pixon
pixon_bobj Image Info Background data used in pixon -- -- -- pointer N/A hsi_pixon
pixon_error Image Info Array of estimated uncertainty of reconstructed image -- N/A -- pointer N/A hsi_pixon
pixon_full_pm_calc Image Control If set, do a more complete but slower calculation of the pixon map. -- -- -- int Expert hsi_pixon
pixon_guess Image Control Image used as initial guess for pixon reconstruction Back projection image N/A -- pointer Advanced hsi_pixon
pixon_iterate Image Info Number of iterations used at final resolution -- N/A -- long N/A hsi_pixon
pixon_noplot Image Control If set, do not show intermediate plots 0 N/A 0 - 1 int Standard hsi_pixon
pixon_outresolution Image Info Minimum pixon size used - N/A -- float N/A hsi_pixon
pixon_profile_coeff Image Info Consant, slope, correlation of fit of predicted to observed profile -- -- -- float(3,9) N/A hsi_image_alg
pixon_profile_cstat Image Info Goodness of fit of image for each detector from comparison of predicted and observed profiles -- -- -- float(9) N/A hsi_image_alg
pixon_profile_mc_cstat Image Info Monte Carlo C-statistic for each detector -- -- -- float(9) N/A hsi_image_alg
pixon_profile_mc_fwhm Image Info Monte Carlo FWHM for each detector -- -- -- float(9) N/A hsi_image_alg
pixon_profile_mc_tot_cstat Image Info Monte Carlo C-statistic for all detectors -- -- -- float N/A hsi_image_alg
pixon_profile_mc_tot_fwhm Image Info Monte Carlo FWHM for all detectors -- -- -- float N/A hsi_image_alg
pixon_profile_tot_cstat Image Info Overall goodness of fit of image from comparison of predicted and observed profiles' -- -- -- float N/A hsi_image_alg
pixon_progress_bar Image Control If set, show progress bar with cancel option 1 N/A 0 - 1 int Standard hsi_pixon
pixon_residual Image Info Data residuals -- N/A -- pointer N/A hsi_pixon
pixon_resolution Image Control Minimum resolution to search 0 pixel -- long Advanced hsi_pixon
pixon_rgof Image Info Final c-statistic (goodness of fit) -- N/A -- float N/A hsi_pixon
pixon_sensitivity Image Control Sensitivity used in creating pixon map. 0. is most sensitive, > 3. is very insensitive. 0.0 N/A -- float Advanced hsi_pixon
pixon_sizes Image Control Array of pixon resolutions to use. Powers of sqrt(2.0) pixel -- pointer Advanced hsi_pixon
pixon_smpattwritedir Image Control Directory to save new smoothed patterns in -- N/A -- string Standard hsi_pixon
pixon_snr Image Control Bit map for controlling pixon options. 0 N/A 0 - 1 int Advanced hsi_pixon
pixon_variable_metric Image Control If set, use the fast algorithm. Requires lots of memory. -- -- -- int Expert hsi_pixon
pixonmap Image Info Map giving spatial scale used at each pixel -- pixel -- pointer N/A hsi_pixon

* Control Parameters are set by the user to control the software; Info parameters are informational output parameters.

** Note that for parameters whose type is 'pointer', you can set the parameter without making it a pointer first - the object will take care of that.  And when you retrieve a parameter that is a pointer, unless you use the /NO_DEREFERENCE keyword on the call to GET, the contents of the pointer will be returned, not the pointer.

*** User Levels are:
   Standard - parameters that most users will want to set
   Advanced - parameters that require a high level of familiarity with the software
   Expert - parameters that should never be set by users

Last updated 18-Apr-2013 by Kim Tolbert , 301-286-3965