FERMI SOLAR DATA ANALYSIS USING OSPEX Kim Tolbert

FERMI SOLAR DATA ANALYSIS USING OSPEX Kim Tolbert The Catholic University of America and Goddard Space Flight Center Fermi Solar Data Analysis Workshop at GSFC kim. tolbert@nasa. gov August 22 -23, 2012 1

OSPEX Object-oriented interface for X-ray spectral analysis of solar data Distributed in SSWIDL Fermi Solar Data Analysis Workshop at GSFC kim. tolbert@nasa. gov August 22 -23, 2012 2

OSPEX runs in SSWIDL �Proprietary �OSPEX needs IDL > 6. 1 SSW (Solar. Software) �IDL routines for solar data analysis �Publicly available �GEN, SPEX, XRAY branches �Updated regularly IDL and SSW installed in Fermi. VM for this workshop �Temporary IDL license expires August 31, 2012 Fermi Solar Data Analysis Workshop at GSFC kim. tolbert@nasa. gov August 22 -23, 2012 3

OSPEX Currently handles �RHESSI spectrum and image cube �Fermi CSPEC, CTIME, and LAT PHA 2 or LLE �XSM �SOXS �MESSENGER �YOHKOH WBS �User-provided spectrum Any time-ordered count spectrum data with response information can be added Fermi Solar Data Analysis Workshop at GSFC kim. tolbert@nasa. gov August 22 -23, 2012 4

OSPEX negatives Requires purchase of IDL license Analyze single data source �Simultaneous fitting of multiple instruments (or detectors) is planned Chi-square fitting only �Problematic with low count rates �C-statistic fitting is planned Fermi Solar Data Analysis Workshop at GSFC kim. tolbert@nasa. gov August 22 -23, 2012 5

OSPEX Positives Any OS Graphical interface, or command line, or BOTH Multiple fit analysis intervals View and save results Save setup script PLOTMAN simplifies graphic manipulations Flexible design allows for adding new data easily SSW – view/analyze Fermi event as observed by other instruments Fermi Solar Data Analysis Workshop at GSFC kim. tolbert@nasa. gov August 22 -23, 2012 6

OSPEX documentation OSPEX User Guide What’s New in OSPEX Object Parameter Tables Available via Help button on OSPEX GUI Fermi Solar Data Analysis Workshop at GSFC kim. tolbert@nasa. gov August 22 -23, 2012 7

OSPEX Steps 1. 2. 3. 4. 5. 6. 7. 8. Start OSPEX Select Input Define background time interval(s) Define analysis time interval(s) Select spectral model component(s) Fit intervals View results Save results and script 1. Run script and import results 2. View results Fermi Solar Data Analysis Workshop at GSFC kim. tolbert@nasa. gov August 22 -23, 2012 8

Starting OSPEX Start SSWIDL �sswidlde & o = ospex() Fermi Solar Data Analysis Workshop at GSFC kim. tolbert@nasa. gov August 22 -23, 2012 9

Using OSPEX o is reference to ospex object Use o at command line or through GUI simultaneously Click Refresh button in widgets to display changes from command line Fermi Solar Data Analysis Workshop at GSFC kim. tolbert@nasa. gov August 22 -23, 2012 10

OSPEX Example Sample analysis of BGO data for 12 June 2012 M 2 event 1. Step-by-step from beginning 2. Import previously-computed setup and fits Details at http: //hesperia. gsfc. nasa. gov/~kim/Fermi%20 Solar%2 0 Workshop%202012/OSPEX_step_by_step. htm Fermi Solar Data Analysis Workshop at GSFC kim. tolbert@nasa. gov August 22 -23, 2012 11