HESSI Data Object Parameters:  EM 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
em_cstat_history Image Info EM Alg: CSTAT values at each iteration -- -- -- pointer N/A hsi_em
em_det_index_mask_used Image Info EM Alg: Byte array showing which detectors were used to construct average used for normalization -- -- -- byte(9) N/A hsi_image_alg
em_flux Image Info EM Alg: Sum of all pixels in output image -- -- -- float N/A hsi_em
em_image_out_history Image Info EM Alg: Every 10th image is saved in this array -- -- -- pointer N/A hsi_em
em_index_image_out Image Info EM Alg: Indices of saved images -- -- -- pointer N/A hsi_em
em_iter Image Info EM Alg: Number of iterations done -- -- -- int N/A hsi_em
em_map_window Image Control EM Alg: map window holder -1 -- -- int Standard hsi_em
em_max_array_size Image Control EM Alg: Product of time and npixels, needed to construct stopping rule 170000000 -- -- long Expert hsi_em
em_max_iterations Image Control EM Alg: Maximum # iterations, used if stopping rule fails (normally set high to use stopping rule) 500 -- -- long Standard hsi_em
em_max_maps_saved Image Control EM Alg: Maximum # maps to put in info parameter, evenly spaced. Set to -1 for all. 1 means only save first map after dirty map 1 -- -- int Standard hsi_em
em_n_event_used Image Info EM Alg: Total counts in each detector used to make image -- -- -- long(9) N/A hsi_image_alg
em_profile_coeff Image Info EM Alg: Consant, slope, correlation of fit of predicted to observed profile -- -- -- float(3,9) N/A hsi_image_alg
em_profile_cstat Image Info EM Alg: Goodness of fit of image for each detector from comparison of predicted and observed profiles -- -- -- float(9) N/A hsi_image_alg
em_profile_mc_cstat Image Info EM Alg: Monte Carlo C-statistic for each detector -- -- -- float(9) N/A hsi_image_alg
em_profile_mc_fwhm Image Info EM Alg: Monte Carlo FWHM for each detector -- -- -- float(9) N/A hsi_image_alg
em_profile_mc_tot_cstat Image Info EM Alg: Monte Carlo C-statistic for all detectors -- -- -- float N/A hsi_image_alg
em_profile_mc_tot_fwhm Image Info EM Alg: Monte Carlo FWHM for all detectors -- -- -- float N/A hsi_image_alg
em_profile_tot_cstat Image Info EM Alg: Overall goodness of fit of image from comparison of predicted and observed profiles -- -- -- float N/A hsi_image_alg
em_progress_bar Image Control EM Alg: If set, show progress bar 0 -- 0 - 1 int Standard hsi_em
em_show_maps Image Control EM Alg: If set, show intermediate maps 0 -- 0 - 1 int Standard hsi_em
em_show_n_maps Image Control EM Alg: Show every nth map 20 -- -- int Standard hsi_em
em_tolerance Image Control EM Alg: Tolerance used in stopping rule, gives good heuristic results 0.100000 -- -- float Standard hsi_em
em_viscomp_chisq_alldet Image Info EM Alg: Visibility comparison reduced chisq for all detectors -- -- -- float N/A hsi_image_alg
em_viscomp_chisq_detsep Image Info EM Alg: Visibility comparison reduced chisq for each detector separately -- -- -- float(9) N/A hsi_image_alg
em_viscomp_chisq_detused Image Info EM 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