Authors: | The HXD team |
---|---|
Date: | Apr., 2012 |
Version: | Processing version 2.2.x.x, HEADAS version 6.10 or later |
Contanct: | suzaku_help(at)crab.riken.jp |
Table of contents
The purpose of the document is to guide HXD users to appropriate sections in the ABC guide of Suzaku or other web pages.
This document is valid for the version 2.x products. If you dare want to use v1.x products, please check Version 1.X processed data.
Before starting the Suzaku analysis, you need to install the latest version of the HEADAS package from lheasoft.
Users should check important events and processing version.
Go to 4.1 Important Events and Processing Version.
Also, users should check any updates.
Go to 4.2 Checking for Updates.
Go to 3.1.1 Retrieving the data
For example, when your OBS_ID is 101005040, you can download whole directory tree with the wget command as follows:
unix% wget -rL -nH --cut-dirs=4 ftp://darts.isas.jaxa.jp/pub/suzaku/ver2.1/101005040
You should check New GSO Gain Annouce Page to get appropriate background files.
You should check New GSO Gain Annouce Page to see if you need reprocess your data.
When you need to reprocess the data, then
HXD Perl scripts refer to 7.5.6 hxdpinxbpi and 7.8.1 hxdpinxblc or 7.7.2 hxdgsoxbpi. and 7.9.1 hxdgsoxblc and also you need 5.4.1 Reprocessing and Screening : Aepipeline for reprocessing your data. All of them are written in Perl scripts, so you should set the following enironmental variable
export LHEAPERL=/usr/bin/perl
for bash users:
setenv LHEAPERL /usr/bin/perl
for tcsh users.
If you do so, then these scripts should work.
Go to 5.7.2 Flux Cross Calibration: XIS and HXD.
Generally, crossnormarization among the three detectors should be as follows.
Nominal | XIS | HXD-PIN | HXD-GSO |
---|---|---|---|
XISnom | 1.0 | 1.16 | 1.16 |
HXDnom | 1.0 | 1.18 | 1.18 |
As for crossnormalization amond the XISs,
If you would like to examine the systematic error of the background model for your object, the best way is to extract the NXB spectrum by use of the earth-occulted period and compare it with the model. Please note that there is not always earth-occultation.
You can estimate the duration with the EHK file:
unix% fplot auxil/ae101005040.ehk.gz TIME ELV - /XW pltcmd=" "
When the elevation of the source (ELV) is less than -5 degree, the FOV of the detector is occulted by the earth and hence the spectrum during this period can be treated as same as the NXB component. Thus, what you should do is to change ELV>5 into ELV<-5 when extracting data. The procedure can be easily done as follows.
Note that "the first step manual" (Only in Japanese) (http://cosmic.riken.jp/suzaku/help/guide/index_e.html) has not been updated since Jan. of 2008, so you should read the ABC guide when performing the following analyses.