RHESSI Data Analysis Software Change History
Notes:
Some of the dates are links which will give you more information about the
change.
Only the more significant changes are documented here. Minor changes are
ongoing.
| 9-Oct-2012 | IMAGING - You can now make regularized electron
and photon visibilities and images. The visibility type is controlled
by a new parameter, vis_type, which can be set to 'photon' (the default,
previously only available type of visibility), 'regularized electron', and
'regularized photon'.
Also, the software no longer automatically reads and writes visibility files when the vis_input_fits or vis_out_filename parameters are set to strings; now you must call the visibility object READ or WRITE methods explicitly (CLI,not GUI). See Using Visibility Objects in the RHESSI Software for more details. |
| 31-May-2012 | SPECTRUM - A new control parameter, INSERT_KEDGE, was added to support better precision in the detector response around the instrumental K-edges for germanium, molybdenum (Grid 1 only), and tungsten. Default is 0 (no effect) until after the June 2012 SPD meeting. |
| 16-Mar-2012 | IMAGING - For over-the-limb flares, two new parameters are available to ensure that the grids are precisely aligned to a REFERENCE_POSITION_ANGLE (in radians) for one roll bin sequence in the stacked eventlist and corresponding visibility. Enable this feature by setting USE_REFERENCE_POSITION_ANGLE. |
| 1-Nov-2011 | IMAGING - In the hessi image widget, you can now set the image center graphically by clicking the 'Click Image to Set Map Center' button. |
| 23-Sep-2011 | IMAGING - In hessi image widget, more options
were added to the Display-> Aspect Solution button to plot p_error,
triangles, and distance from Sun center to image axis. From the
command line, these plots can produced via asp_obj -> plot, /plot_dist or /plot_triangle or /plot_p_error |
| 18-Apr-2011 | OBSERVING SUMMARY - In the GUI, you now have the option to select which detectors to plot the quicklook count rate data for. Previously used only the obs_summ files, which have a fixed set of front and rear detectors already combined. Now also use the full_rate files, which have data for the 18 separate detector segments. |
| 1-Apr-2011 | IMAGING - By setting CBE_MULTI_ATTEN_THRESHOLD, you can now make images in time intervals that span a change in attenuator state. |
| 1-Apr-2011 | ASPECT SOLUTION - The error term of the aspect solution is now checked and bad data points are not used. |
| 28-Mar-2011 | ASPECT SOLUTION - Improved quality of aspect solution where the pointing is just outside the nominal field of view. Previously rejected all 3-limb solutions if some were isolated (which happened frequently). Now uses sets of contiguous 3-limb solutions. |
| 1-Mar-2011 | IMAGING - Removed a number of dangling pointer references, fixing the source of a number of memory leaks. |
| 7-Feb-2011 | BROWSER - SDO AIA Flare Cutout link added for some RHESSI flares. Place red time arrow on a flare; if AIA cutouts are available for that flare, the 'AIA Flare Cutout' on the left side of Browser will become active. |
| 18-Jan-2011 | SPECTRUM - Added a button on spectrum widget to write separate detector FITS files with native energy bins (can be done from the command line using the hsi_spectrum_sep_det_files routine. |
| 21-Jan-2011 | Widgets in HESSI GUI, PLOTMAN, OSPEX, etc. should now work on small displays. A vertical scroll bar is added if the widget would otherwise be too big for your screen. (please email kim.tolbert@nasa.gov if I've missed any big widgets) |
| 29-Sep-2010 | SIMULATIONS - A bug in the simulation software
(in hsi_sim_dummy_livetime.pro) that caused the last 5% of any simulation to have 0 livetime was fixed. |
| 1-Sep-2010 | RHESSI FLARE CATALOG - New version of the flare catalog is online that uses the 6-12 keV energy band (previously used 12-25 keV) and now includes ~24,000 microflares. More details. |
| 23-Aug-2010 | OSPEX -added chi2_map method to compute uncertainties on fit parameters. Chisquare mapping analysis consists of varying one parameter through a range of values surrounding the best-fit value, fitting the other parameters, and then examining the chisqr vs parameter value curve to determine 1- and 2-sigma error estimates. More details are in the full OSPEX documentation. |
| 20-May-2010 | BROWSER - Added daily and orbital Fermi GBM plots to BROWSER. The orbital plots are on RHESSI orbit times, so the plots should line up with the RHESSI orbital plots. |
| 13-May-2010 | OSPEX -added albedo function component. |
| 1-May-2010 | IDL 6.1 is now the minimum version required to run RHESSI software. |
| 16-Apr-2010 | IMAGING - Added a new control parameter, CLEAN_REGRESS_COMBINE. Defaults to 0. Set to 1 to combine the component map with the residual map based on a regression of the count rate profiles from each of the two maps against the observed profile, resulting in a better match between the average observed and measured profiles. |
| 15-Apr-2010 | IMAGING - There is a new tool for comparing observed modulation profiles with the expected profiles calculated from a reconstructed image, and for calculating the C-statistics and other fit parameters resulting from that comparison. More details. |
| 15-Mar-2010 | OSPEX - added monte_carlo method to compute uncertainties on fit paramaters. Monte Carlo analysis consists of doing many fits to Poisson random deviates of the model computed from the best-fit parameters, and determining the spread of the resulting fit parameters. More details are in the full OSPEX documentation. |
| 20-Jan-2010 | SPECTRUM - For rear segments, implemented artifact mask to remove artifacts in fixed channels from specific detectors. Used in spectrum and SRM files export to OSPEX. |
| Jan-2010 | OSPEX -FERMI GBM data can now be analyzed by OSPEX. See the Fermi Solar Flare Observations page for more information.. |
| 3-Dec-2009 | OSPEX - Corrected problem with sigma of fit parameters. A new version of mcurvefit was onlined that provides more reliable, stable sigmas on fit parameters. A problem with the old version allowed sigmas to become unreasonably small in some cases. |
| 30-Nov-2009 | OSPEX - YOHKOH GRS data can now be analyzed by OSPEX |
| 9-Sep-2009 | SPECTRUM - Added rear_no_anti control parameter (defaults to 1) to remove anti-coincidence rejection for rear detectors. Extended DRM to higher energies (150 MeV) and made DRM consistent with the non-anti-coincident condition. |
| 24-Aug-2009 | OSPEX - New RHESSI OSPEX User Guide online |
| 4-Aug-2009 | GOES - Added a button on the Image, Spectrum, and OSPEX widgets to plot a GOES time profile for the currently selected time interval. |
| 16-Jul-2009 | IMAGE - Added UV_SMOOTH image reconstruction algorithm. |
| 7-May-2009 | Object parameter tables updated to include
parameters for visibility and vis-based image algorithm objects. http://hesperia.gsfc.nasa.gov/ssw/hessi/doc/params/hsi_params_all.htm |
| 4-May-2009 | Improved visibility object software, visibility
bags, image cubes from visibilities. Complete info at
http://hesperia.gsfc.nasa.gov/ssw/hessi/doc/image/hsi_visibility_howto.html cbe_digital_quality default changed to .95 |
| 3-May-2009 | Change in notification of software modifications. |
| 1-Feb-2009 | Commonly used documentation now available offline. Table of contents in $SSW/hessi/doc/index.html |
| 6-Apr-2008 | New post-anneal gain solution online |
| 28-Mar-2008 | Important: RHESSI gain calibration issue since anneal |
| 16-Jan-2008 | RHESSI detectors successfully annealed |
| 19-Dec-2007 | Release 9.0 |
| 5-Nov-2007 | PLOTMAN plot options improved. Users can now set their own preferences. |
| 3-Oct-2007 | Halfscale artifact filtering method implemented |
| 13-Jul-2007 | Support for harmonics and visibilities |
| 10-May-2007 | Release 8.9 |
| 12-Apr-2007 | More about using old control parameter defaults and setting your own defaults. |
| 12-Apr-2007_(a) | Critical improvements to the datagap detection and livetime integration algorithms |
| 26-Mar-2007 | Change in RHESSI object control parameter default values |
| 10-May-2006 | Release8.8 |
| 24-Feb-2006 | Release 8.7 |
| 20-Sep-2005 | Release 8.6 |
| 6-Sep-2005 | Changes in how the RHESSI software finds data files. |
| 30-Aug-2005 | Default RHESSI subcollimator response table has been updated. |
| 2-Aug-2005 | Improvements to pileup correction, offaxis response determination, and livetime calculation. |
| 8-Jul-2005 | Release 8.5. |
| 22-Jun-2005 | Improvement and bug fix for pileup correction. |
| 10-Mar-2005 | New image object that handles
both multi-image cubes and single images. http://hesperia.gsfc.nasa.gov/ssw/hessi/doc/image/hsi_image_howto.html http://hesperia.gsfc.nasa.gov/ssw/hessi/doc/gui/gui_changes_march2005.html |
| 8-Mar-2005 | Release 8.4. |
| 23-Feb-2005 | Fixed image blurring caused by culling bug. |
| 16-Dec-2005 | Release 8.3. |
| 29-Nov-2004 | Changes to Back Projection and Clean, new parameters for culling, rate-enabled back projection, local averaging and more. |
| 7-Sep-2004 | Fixed bug that caused incorrect source position in images in rare cases. |
| 29-Jul-2004 | Enabled writing multiple attenuator states in a single SRM FITS file. |
| 16-Jul-2004 | Release 8.2. |
| 7-Jun-2004 | Changed release/development version strategy. |
| 19-Mar-2004 | Release 8.1. |
| 29-Sep-2003 | Updated Roll database covering February 2002 through August 2003 online. |
| 12-Sep-2003 | Decimation, pileup, and flare position corrections implemented. |
| 12-Aug-2003 | Roll Aspect Data Base introduced. |
| 14-Jul-2003 | Livetime accumulation correction. |
| 14-Jul-2003 (a) | Detector 2 degraded. |
| 1-Jul-2003 | Improvements to SPEX and XRAY packages. |
| 3-Mar-2003 | More explanation about new daily observing summary files. |
| 11-Feb-2003 | Release 8 of HESSI Analysis Software online. |
| 18-Nov-2002 | Many changes to HESSI Analysis Software on ATEST (dropouts, deadtime, narrow spectrogram bins, SPEX export, error handling mechanism). |
| 17-Nov-2002 | Error handling mechanism (catch) added to HESSI software. |
| 15-Nov-2002 | SPEX thermal spectra now includes atomic line emission below 8 keV. |
| 26-Oct-2002 | Correction to image normalization at high energies - front/rear segment issues. |
| 22-Oct-2002 | Error in image and spectra normalization - assumed thin attenuator always in place. |
| 1-Oct-2002 | Spectral response matrix error for front segment of Detector 9. |
| 19-Sep-2002 | Daily observing summary files, daily instrument log files, and corrected count rate plots introduced. |
| 29-Aug-2002 | Fixes to dropouts, livetime. Detector gain a function of date. |
| 24-Jul-2002 | Interpolated roll solution for July 23 event. |
| 16-Jul-2002 | Imaging with Grids 1 and 2 fully supported. |
| 11-Jul-2002 | PMTRAS diagnostic plots. |
| 8-Jul-2002 | New multiple energy band parameter for imaging. Change in sum_flag, sum_coincidence parameters. |
| 19-Jun-2002 | Livetime corrections enabled for all classes (spectrum, lightcurve, and image). |
| 22-May-2002 | Preliminary subcollimator response table to enable imaging with Grids 1 and 2. |
Last updated
15 November 2012
by
Kim Tolbert
,
301-286-3965