RHESSI Spectroscopy - OSPEX User Guide
From RHESSI Wiki
Contents |
Introduction
A general outline that covers the steps necessary to fit a RHESSI Spectra, starting with the creation of the RHESSI Spectrum file and going through the process of defining background, time intervals, and fitting models to the data using OSPEX.
Links to documentation for fitting RHESSI Data
Creating a spectrum file with the HESSI GUI
Starting with the level zero RHESSI data this document goes through the steps necessary to create a spectrum file using the HESSI GUI. Command Line instructions are also included. The documentation is for creating a spectrum and spectrum response matrix (SRM) file for a single detector, but is easily expandable to creating files for multiple detectors.
Users Guide for the OSPEX GUI
Using a spectrum file and SRM file this document goes through the steps necessary for using the OSPEX GUI to fit a RHESSI spectrum, including defining background, time intervals, a fit model and doing a fit.
Vth - Variable Thermal
The variable thermal fit model component uses a single emission measure and temperature along with a measure of the relative abundance of the Fe-Ni line complex to fit the thermal emission of the RHESSI spectrum for a user defined time interval.
Bpow - Broken Power law
The broken power law fit model component uses a break energy, the spectral index above and below the break energy, and a normalization dependent on the count rate to fit the non-thermal component of the RHESSI spectrum for a user defined time interval. This is the simplest model available for the non-thermal emission during a flare.
Thick Target
The thick target fit model component uses a double broken power law in electron space to model to non-thermal portion of the RHESSI spectrum. The measured photon distribution is calculated from the electron distribution using
drm_mod
drm_mod
pileup_mod
pileup_mod
Fitting Multiple Intervals
Fitting multiple intervals
View Fit Results
View fit results
Fitting a new detector
Fitting a new detector
'UNDER CONSTRUCTION'