RHESSI Spectroscopy - OSPEX User Guide

From RHESSI Wiki

(Difference between revisions)
Jump to: navigation, search
Line 31: Line 31:
The broken power law component is a single power law which uses a break energy, the power law index above the break energy and below, and a count rate dependent normalization to model the non-thermal component of the RHESSI spectrum as a function of energy for a user defined time interval.  
The broken power law component is a single power law which uses a break energy, the power law index above the break energy and below, and a count rate dependent normalization to model the non-thermal component of the RHESSI spectrum as a function of energy for a user defined time interval.  
====Thick Target====
====Thick Target====
 +
[[Thick2 - Thick Target Bremsstrahlung Version 2| Thick Target]]
 +
====drm_mod====
====drm_mod====
 +
[[Drm mod - Pseudo function for fine tuning RHESSI DRM parameters| drm_mod]]
 +
====pileup_mod====
====pileup_mod====
 +
[[Pileup mod - Pseudo function for correcting pileup| pileup_mod]]
 +
===Fitting Multiple Intervals===
===Fitting Multiple Intervals===
-
===Fitting a new detector===
+
[[Fitting multiple intervals]]
 +
===Fitting a new detector===
 +
[[Fitting a new detector]]

Revision as of 13:44, 19 August 2009

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

Create a spectrum file using 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:

Creating a spectrum file with the HESSI GUI

This includes the details of creating a file for a single detector using the GUI as well as simple command line instructions for accomplishing the same. The end result is a spectrum and spectrum response matrix (SRM) file in the .fits format which can be read by OSPEX.

Fitting a time interval using the OSPEX GUI

The following document gives a step by step example of using the OSPEX GUI to fit a time interval:

Users Guide for the OSPEX GUI

This includes defining background, setting up time intervals, choosing a fit model and doing a fit for a single interval.

Vth

This document contains a brief explanation and example of how to use the variable thermal model component:

 How to use Vth

The variable thermal component uses a single emission measure and temperature along with the relative abundance of the Fe-Ni complex to model the thermal portion of the RHESSI spectrum as a function of energy for a user defined time interval.

Bpow

This document contains a brief description of how to use the broken power law component:

 How to use Bpow

The broken power law component is a single power law which uses a break energy, the power law index above the break energy and below, and a count rate dependent normalization to model the non-thermal component of the RHESSI spectrum as a function of energy for a user defined time interval.

Thick Target

 Thick Target

drm_mod

 drm_mod

pileup_mod

 pileup_mod

Fitting Multiple Intervals

Fitting multiple intervals

Fitting a new detector

Fitting a new detector


'UNDER CONSTRUCTION'

Personal tools
Namespaces
Variants
Actions
Navigation
Toolbox