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Kim Tolbert The Catholic University of America a nd Goddard Space Flight Center. Fermi SOLAR Data Analysis Using OSPEX. OSPEX. O bject-oriented interface for X-ray spectral analysis of solar data Distributed in SSWIDL. OSPEX runs in SSWIDL. IDL Proprietary OSPEX needs IDL > 6.1 - PowerPoint PPT Presentation
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Fermi Solar Data Analysis Workshop at GSFC [email protected] 1
FERMI SOLAR DATA ANALYSIS USING OSPEX
Kim Tolbert
The Catholic University of Americaand
Goddard Space Flight Center
August 22-23, 2012
Fermi Solar Data Analysis Workshop at GSFC [email protected] 2
Object-oriented interface for X-ray spectral analysis of solar data
Distributed in SSWIDL
August 22-23, 2012
OSPEX
Fermi Solar Data Analysis Workshop at GSFC [email protected] 3
OSPEX runs in SSWIDL
IDL Proprietary OSPEX needs IDL > 6.1
SSW (SolarSoftware) IDL routines for solar data analysis Publicly available GEN, SPEX, XRAY branches Updated regularly
IDL and SSW installed in FermiVM for this workshop
Temporary IDL license expires August 31, 2012August 22-23, 2012
Fermi Solar Data Analysis Workshop at GSFC [email protected] 4
OSPEX
Currently handles RHESSI spectrum and image cube Fermi CSPEC, CTIME, and LAT PHA2 or LLE XSM SOXS MESSENGER YOHKOH WBS User-provided spectrum
Any time-ordered count spectrum data with response information can be added
August 22-23, 2012
Fermi Solar Data Analysis Workshop at GSFC [email protected] 5
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
August 22-23, 2012
Fermi Solar Data Analysis Workshop at GSFC [email protected] 6
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
August 22-23, 2012
Fermi Solar Data Analysis Workshop at GSFC [email protected] 7
OSPEX documentation
OSPEX User Guide
What’s New in OSPEX
OSPEX Object Parameter Tables
Available via Help button on OSPEX GUI
August 22-23, 2012
Fermi Solar Data Analysis Workshop at GSFC [email protected] 8
OSPEX Steps
1. Start OSPEX2. Select Input3. Define background time interval(s)4. Define analysis time interval(s)5. Select spectral model component(s)6. Fit intervals7. View results8. Save results and script
9. Run script and import results10.View results
August 22-23, 2012
Fermi Solar Data Analysis Workshop at GSFC [email protected] 9
Starting OSPEX
Start SSWIDL sswidl sswidlde &
o = ospex()
August 22-23, 2012
Fermi Solar Data Analysis Workshop at GSFC [email protected] 10
Using OSPEX
o is reference to ospex object Use o at command line
orthrough GUI simultaneously
Click Refresh button in widgets to display changes from command line
August 22-23, 2012
Fermi Solar Data Analysis Workshop at GSFC [email protected] 11
OSPEX Example
Sample analysis of BGO data for 12 June 2012 M2 event
1. Step-by-step from beginning2. Import previously-computed setup and
fits
Details at http://hesperia.gsfc.nasa.gov/~kim/Fermi%20Solar%20Workshop%202012/OSPEX_step_by_step.htm
August 22-23, 2012
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