HITOMI HITOMI DATA REDUCTION GUIDE Version 1.0 Date: June 2016 X-ray Astrophysics Laboratory (NASA/Goddard Space Flight Center) and the Institute of Space and Astronautical Science (ISAS/JAXA) Prepared by: Hitomi Science Data Center CHANGE RECORD PAGE (1 of 1) DOCUMENT TITLE: Hitomi Data Reduction Guide ISSUE DATE PAGES DESCRIPTION AFFECTED Version 1.0 June 24 , 2016 All 1st version 1 INTRODUCTION ..................................................................................................... 5 1.1 Content of this document ................................................................................................ 6 2 Hitomi Data Specifics and Convention .................................................................... 7 2.1 Data ................................................................................................................................... 7 2.1.1 Data Organization ...................................................................................................... 7 2.1.2 Filename convention .................................................................................................. 8 2.2 Retrieving Data ................................................................................................................ 9 2.3 Data FITS convention ................................................................................................... 10 2.3.1 Coordinates FITS column definitions ...................................................................... 10 2.3.2 Energy FITS column definition ............................................................................... 12 2.3.3 Timing Information .................................................................................................. 13 3 SOFTWARE AND CALIBRATION ..................................................................... 14 3.1 Hitomi Software Package ............................................................................................. 14 3.2 CALDB ........................................................................................................................... 14 3.3 XSELECT ...................................................................................................................... 15 3.4 XSLIDE .......................................................................................................................... 15 4 Hitomi DATA ANALYSIS OVERVIEW .............................................................. 16 4.1 Pipeline ........................................................................................................................... 16 4.2 Reprocessing .................................................................................................................. 16 4.3 Data Selection and products ......................................................................................... 17 4.4 Data Analysis ................................................................................................................. 17 4.4.1 Imaging Analysis ..................................................................................................... 17 4.4.2 Spectral Analysis ..................................................................................................... 18 4.4.3 Timing Analysis ....................................................................................................... 24 5 SOFT X-RAY SPECTROMETER (SXS) DATA ANALYSIS ............................ 25 5.1 Introduction ................................................................................................................... 25 5.2 Cleaned event file content ............................................................................................. 25 5.3 Reprocessing events ....................................................................................................... 28 5.4 Extracting products ....................................................................................................... 32 5.4.1 Additional screening of events ................................................................................. 32 5.4.2 Examples of extracting products .............................................................................. 35 5.5 Background Estimation ................................................................................................ 41 5.6 ARF and RMF generation ............................................................................................ 42 5.6.1 RMF generation with sxsmkrmf ............................................................................... 42 5.6.2 ARF file generation using ahexpmap and aharfgen ................................................ 43 5.7 Summary of tasks used in this chapter ........................................................................ 45 6 SOFT X-RAY IMAGER (SXI) DATA ANALYSIS ............................................. 47 6.1 Introduction ................................................................................................................... 47 6.2 Cleaned Event File Content .......................................................................................... 47 6.3 Reprocessing Events ...................................................................................................... 51 6.4 Extracting Products ...................................................................................................... 52 6.4.1 Additional screening of events ................................................................................. 52 6.4.2 Examples of Extracting Products ............................................................................. 54 6.5 Background estimation ................................................................................................. 59 6.6 ARF and RMF generation ............................................................................................ 60 6.6.1 RMF generation with sxirmf .................................................................................... 60 6.6.2 ARF file generation using ahexpmap and aharfgen ................................................ 60 6.7 Summary of the tasks of this section ........................................................................... 62 7 HARD X-RAY IMAGER (HXI) ............................................................................. 63 7.1 Introduction ................................................................................................................... 63 7.2 Cleaned Event File Content .......................................................................................... 63 7.3 Reprocessing Events ...................................................................................................... 65 7.4 Extracting products ....................................................................................................... 66 7.4.1 Preliminaries ............................................................................................................ 67 7.4.2 Extract Light Curve and Spectrum .......................................................................... 69 7.4.3 Additional filtering ................................................................................................... 71 7.4.4 Dead Time and Barycenter Corrections ................................................................... 72 7.5 Background Estimation ................................................................................................ 73 7.6 RSP generation .............................................................................................................. 74 7.7 Summary of tasks used in this chapter ........................................................................ 76 8 SOFT GAMMA-RAY DETECTOR (SGD) .......................................................... 78 8.1 Introduction ................................................................................................................... 78 8.2 Cleaned Event File Content .......................................................................................... 78 8.3 Reprocessing Events ...................................................................................................... 81 8.4 Extracting products ....................................................................................................... 82 8.4.1 Extract Light Curve and Spectrum .......................................................................... 82 8.4.2 Dead Time Correction .............................................................................................. 83 8.5 Background estimation ................................................................................................. 85 8.6 RSP generation .............................................................................................................. 85 8.7 Summary of tasks used in this chapter ........................................................................ 85 9 Summary of Analysis steps ..................................................................................... 87 9.1 Point source .................................................................................................................... 87 9.2 Extended source ............................................................................................................. 97 9.2.1 Imaging Analysis ..................................................................................................... 97 9.2.2 Spectral Analysis ..................................................................................................