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,   EM,   Forward Fit (ff),   MEM_GE (ge),   MEM_NJIT (nj),   Pixon,   UV_SMOOTH (uv),   VIS_CS,   VIS_FWDFIT (vf),   VIS_WV  
Spectral Response Matrix          Observing Summary          Simulation

 

Name Main Object Control / Info* Description Default Units Range Type** User Level*** Class
pixon_background_model Image Control PIXON Alg: If set, attempt a background estimation from the residuals. -- -- -- int Expert hsi_pixon
pixon_background_window Image Info PIXON Alg: Window number for pixon background fit plot -- -- -- int N/A hsi_pixon
pixon_bobj Image Info PIXON Alg: Background data used in pixon -- -- -- pointer N/A hsi_pixon
pixon_det_index_mask_used Image Info PIXON Alg: Byte array showing which detectors were used to construct average used for normalization -- -- -- byte(9) N/A hsi_image_alg
pixon_error Image Info PIXON Alg: Array of estimated uncertainty of reconstructed image -- N/A -- pointer N/A hsi_pixon
pixon_full_pm_calc Image Control PIXON Alg: If set, do a more complete but slower calculation of the pixon map. -- -- -- int Expert hsi_pixon
pixon_guess Image Control PIXON Alg: Image used as initial guess for pixon reconstruction Back projection image N/A -- pointer Advanced hsi_pixon
pixon_iterate Image Info PIXON Alg: Number of iterations used at final resolution -- N/A -- long N/A hsi_pixon
pixon_map_window Image Info PIXON Alg: Window number for pixon map -- -- -- int N/A hsi_pixon
pixon_n_event_used Image Info PIXON Alg: Total counts in each detector used to make image -- -- -- long(9) N/A hsi_image_alg
pixon_noplot Image Control PIXON Alg: If set, do not show intermediate plots 0 N/A 0 - 1 int Standard hsi_pixon
pixon_outresolution Image Info PIXON Alg: Minimum pixon size used - N/A -- float N/A hsi_pixon
pixon_profile_coeff Image Info PIXON Alg: Consant, slope, correlation of fit of predicted to observed profile -- -- -- float(3,9) N/A hsi_image_alg
pixon_profile_cstat Image Info PIXON Alg: 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 PIXON Alg: Monte Carlo C-statistic for each detector -- -- -- float(9) N/A hsi_image_alg
pixon_profile_mc_fwhm Image Info PIXON Alg: Monte Carlo FWHM for each detector -- -- -- float(9) N/A hsi_image_alg
pixon_profile_mc_tot_cstat Image Info PIXON Alg: Monte Carlo C-statistic for all detectors -- -- -- float N/A hsi_image_alg
pixon_profile_mc_tot_fwhm Image Info PIXON Alg: Monte Carlo FWHM for all detectors -- -- -- float N/A hsi_image_alg
pixon_profile_tot_cstat Image Info PIXON Alg: Overall goodness of fit of image from comparison of predicted and observed profiles' -- -- -- float N/A hsi_image_alg
pixon_progress_bar Image Control PIXON Alg: If set, show progress bar with cancel option 1 N/A 0 - 1 int Standard hsi_pixon
pixon_rate_window Image Info PIXON Alg: Window number for pixon profile plot -- -- -- int N/A hsi_pixon
pixon_residual Image Info PIXON Alg: Data residuals -- N/A -- pointer N/A hsi_pixon
pixon_resolution Image Control PIXON Alg: Minimum resolution to search 1 pixel -- long Advanced hsi_pixon
pixon_reusemapwindows Image Control PIXON Alg: If set, reuse window for pixon intermediate plots, otherwise make new window 1 -- 0 - 1 int Standard hsi_pixon
pixon_rgof Image Info PIXON Alg: Final c-statistic (goodness of fit) -- N/A -- float N/A hsi_pixon
pixon_sensitivity Image Control PIXON Alg: 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 PIXON Alg: Array of pixon resolutions to use. Powers of sqrt(2.0) pixel -- pointer Advanced hsi_pixon
pixon_smpattwritedir Image Control PIXON Alg: Directory to save new smoothed patterns in -- N/A -- string Standard hsi_pixon
pixon_snr Image Control PIXON Alg: Bit map for controlling pixon options. 0 N/A 0 - 1 int Advanced hsi_pixon
pixon_used_pixon_sizes Image Info PIXON Alg: Pixon sizes value used -- -- -- pointer N/A hsi_pixon
pixon_variable_metric Image Control PIXON Alg: If set, use the fast algorithm. Requires lots of memory. -- -- -- int Expert hsi_pixon
pixon_viscomp_chisq_alldet Image Info PIXON Alg: Visibility comparison reduced chisq for all detectors -- -- -- float N/A hsi_image_alg
pixon_viscomp_chisq_detsep Image Info PIXON Alg: Visibility comparison reduced chisq for each detector separately -- -- -- float(9) N/A hsi_image_alg
pixon_viscomp_chisq_detused Image Info PIXON Alg: Visibility comparison reduced chisq for all detectors used in image -- -- -- float N/A hsi_image_alg

* 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 21-Dec-2020 by Kim Tolbert , 301-286-3965