HESSI Data Object Parameters:  Forward Fit 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
ff_back_sec Image Info Background photon rate (photons/s SC) -- -- -- float N/A hsi_forwardfit
ff_background_det Image Control If set, forward-fit includes detector background in time profiles 0 -- 0 - 1 int Standard hsi_forwardfit
ff_background_map Image Control If set, forward-fit includes background of unmodulated sources 0 -- 0 - 1 int Standard hsi_forwardfit
ff_chi_ff Image Info C-statistic of 9 detectors -- N/A -- float(9) N/A hsi_forwardfit
ff_chiav_ff Image Info Average of C-statistic of detectors used in reconstruction -- N/A -- float N/A hsi_forwardfit
ff_coeff_ff Image Info Coefficients -- N/A -- pointer N/A hsi_forwardfit
ff_cts_sec Image Info Detected count rate (cts/s) -- -- -- float N/A hsi_forwardfit
ff_fixed_pixel Image Control If set, disable automated pixel adjustment 1 N/A 0 - 1 int Advanced hsi_forwardfit
ff_ftol Image Control Tolerance for convergence 0.0001 N/A >0 float Standard hsi_forwardfit
ff_init_set Image Control Choose method for initializing parameters 0 -- 0 - 1 int Advanced hsi_forwardfit
ff_min_sigma Image Control Minimum sigma in modulation for a detector to be included 1.02 N/A >1 float Standard hsi_forwardfit
ff_minsep Image Control Minimum separation required between centroids of adjacent gaussians 0.0 arcsec >0 float Standard hsi_forwardfit
ff_n_gaussians Image Control Number of gaussian components 1 N/A >1 int Standard hsi_forwardfit
ff_n_par Image Control Number of free parameters per gaussian component 4 N/A 4,6,7 int Standard hsi_forwardfit
ff_nitmax Image Control Max number of iterations 10 N/A >3 int Standard hsi_forwardfit
ff_peak_flux Image Info Normalized gaussian amplitude of peak of image (photons/s/cm2) -- cts/(s cm^2 asec^2) -- float N/A hsi_forwardfit
ff_phot_sec Image Info Incident photon rate (photons/s) -- photons/sec -- float N/A hsi_forwardfit
ff_pixelized Image Control Not implemented yet 1 N/A 0 - 1 int Advanced hsi_forwardfit
ff_profile_coeff Image Info Consant, slope, correlation of fit of predicted to observed profile -- -- -- float(3,9) N/A hsi_image_alg
ff_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
ff_profile_mc_cstat Image Info Monte Carlo C-statistic for each detector -- -- -- float(9) N/A hsi_image_alg
ff_profile_mc_fwhm Image Info Monte Carlo FWHM for each detector -- -- -- float(9) N/A hsi_image_alg
ff_profile_mc_tot_cstat Image Info Monte Carlo C-statistic for all detectors -- -- -- float N/A hsi_image_alg
ff_profile_mc_tot_fwhm Image Info Monte Carlo FWHM for all detectors -- -- -- float N/A hsi_image_alg
ff_profile_tot_cstat Image Info Overall goodness of fit of image from comparison of predicted and observed profiles' -- -- -- float N/A hsi_image_alg
ff_progress_bar Image Control If set, show progress bar with cancel option 1 N/A 0 - 1 int Standard hsi_forwardfit
ff_savefile Image Control If set, save intermediate plots (PS file) and parameters (IDL save file) 0 N/A 0 - 1 int Standard hsi_forwardfit
ff_savename Image Control Name of file to write if ff_savefile is set hsi_forwardfit.sav -- -- string Standard hsi_forwardfit
ff_testplot Image Control If set, show intermediate plots 1 N/A 0 - 1 int Standard hsi_forwardfit

* 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 1-Nov-2010 by Kim Tolbert , 301-286-3965