Question ID = 0040
Question ID = 0040
Assigned Member (担当者)2006-12-06 N. OtaName and Institute (質問者/機関)Paolo Esposito, INAF/IASF-Milano (Italy)Question (質問)Dear sir/madam,I retrieved the HXD-GSO background file ae401092010_hxd_gsobgd.evt.gz and I extracted the bkg spectrum following the "seven steps for HXD analysis". I could't group the bkg spectrum as indicated in the 'HXD Background files' page* because it has 256 channels instead of 512, as the source files and the rmf matrix. Is it normal that the bkg spectrum has 256 channels? Please, let me know if I am doing something wrong and how to proceed. Best regards, Paolo Pastorcich Esposito. *binning of both observation and background spectra by "grppha": group 0 24 25 25 26 2 27 28 2 29 31 3 32 35 4 36 38 3 group 39 42 4 43 46 4 47 51 5 52 56 5 57 62 6 group 63 68 6 69 75 7 76 83 8 84 91 8 92 100 9 group 101 110 10 111 121 11 122 134 13 135 147 13 148 162 15 group 163 178 16 179 196 18 197 216 20 217 238 22 239 262 24 group 263 288 26 289 317 29 318 349 32 350 384 35 385 422 38 group 423 465 43 466 511 46 Answer from(回答の文責)HXD teamAnswer (答え)The problem is due to that the column name for PHA is not properly recognized by xselect. So in the xselect session, after you read in the event file, please specify the column name explicitly by executing a command "set phaname PI_SLOW" , and then extract the spectrum.Status （詳細なステータス）2006-12-06, Accept2006-12-06, Forward the question to the HXD team 2006-12-08, Done 
|