====================================================================== BAT GRB EVENT DATA PROCESSING REPORT Process Script Ver: batgrbproduct v2.46 Process Start Time: Sun May 10 04:00:45 EDT 2015 Host Name: bat1 Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger531223 ====================================================================== Trigger: 00531223 Segment: 000 BAT Trigger Time: 366837524.288 [s; MET] Trigger Stop: 366837528.384 [s; MET] UTC: 2012-08-16T19:18:34.743480 [includes UTCF correction] Where From?: TDRSS position message BAT RA: 282.126089347899 Dec: -6.9789643544855 [deg; J2000] Catalogged Source?: NO Point Source?: YES GRB Indicated?: YES [ by BAT flight software ] Image S/N Ratio: 6.94 Image Trigger?: NO Rate S/N Ratio: 10.2469507659596 [ if not an image trigger ] Image S/N Ratio: 6.94 Analysis Position: [ source = BAT ] RA: 282.126089347899 Dec: -6.9789643544855 [deg; J2000] Refined Position: [ source = BAT pre-slew burst ] RA: 282.130627737682 Dec: -6.97900129061139 [deg; J2000] { 18h 48m 31.4s , -06d 58' 44.4" } +/- 2.17330971092898 [arcmin] (estimated 90% radius based on SNR) +/- 0.847054394451738 [arcmin] (formal 1-sigma fit error) SNR: 10.0349696864783 Angular difference between the analysis and refined position is 0.270295 arcmin Partial Coding Fraction: 0.09277344 [ including projection effects ] Duration T90: 4.432000041008 +/- 0.976917597564729 Measured from: 0.568000018596649 to: 5.00000005960464 [s; relative to TRIGTIME] T50: 2.2720000743866 +/- 0.679199513816435 Measured from: 1.46399998664856 to: 3.73600006103516 [s; relative to TRIGTIME] Fluence Peak Flux (peak 1 second) Measured from: 0.828000009059906 to: 1.82800000905991 [s; relative to TRIGTIME] Total Fluence Measured from: 0.280000030994415 to: 5.06400001049042 [s; relative to TRIGTIME] Band 1 Band 2 Band 3 Band 4 15-25 25-50 50-100 100-350 keV Total 0.296047 0.269451 0.120115 0.007397 0.043321 0.043974 0.036089 0.030784 [error] Peak 0.041899 0.114316 0.043619 0.008267 0.019554 0.019751 0.017046 0.013733 [error] [ fluence units of on-axis counts / fully illuminated detector ] ====================================================================== ====== Table of the duration information ============================= Value tstart tstop T100 4.784 0.280 5.064 T90 4.432 0.568 5.000 T50 2.272 1.464 3.736 Peak 1.000 0.828 1.828 ====== Spectral Analysis Summary ===================================== Model : spectral model: simple power-law (PL) and cutoff power-law (CPL) Ph_index : photon index: E^{Ph_index} Ph_90err : 90% error of the photon index Epeak : Epeak in keV Epeak_90err: 90% error of Epeak Norm : normalization at 50 keV in both the PL model and CPL model Nomr_90err : 90% error of the normalization chi2 : Chi-Squared dof : degree of freedo === Time-averaged spectral analysis === (Best model with acceptable fit: PL) Model Ph_index Ph_90err_low Ph_90err_hi Epeak Epeak_90err_low Epeak_90err_hi Norm Nomr_90err_low Norm_90err_hi chi2 dof PL -2.509 -0.395 0.335 - - - 7.77e-03 -2.17e-03 2.10e-03 54.340 57 CPL -1.493 -0.509 1.939 18.991 N/A N/A 3.26e-02 N/A N/A 53.030 56 === 1-s peak spectral analysis === (Best model with acceptable fit: PL) Model Ph_index Ph_90err_low Ph_90err_hi Epeak Epeak_90err_low Epeak_90err_hi Norm Nomr_90err_low Norm_90err_hi chi2 dof PL -1.989 -0.445 0.402 - - - 1.37e-02 -3.94e-03 3.82e-03 58.020 57 CPL 0.179 -2.332 4.821 45.071 -27.871 -45.071 2.07e-01 -2.07e-01 1.17e+02 55.650 56 === Fluence/Peak Flux Summary === Model Band1 Band2 Band3 Band4 Band5 Total 15-25 25-50 50-100 100-350 15-150 15-350 keV Fluence PL 1.24e-07 1.24e-07 8.69e-08 9.69e-08 3.73e-07 4.31e-07 erg/cm2 90%_error_low -2.61e-08 -2.41e-08 -3.10e-08 -5.27e-08 -7.63e-08 -1.06e-07 erg/cm2 90%_error_hi 2.67e-08 2.34e-08 3.35e-08 8.21e-08 7.88e-08 1.25e-07 erg/cm2 Peak flux PL 9.02e-01 6.81e-01 3.43e-01 2.48e-01 2.04e+00 2.17e+00 ph/cm2/s 90%_error_low -3.25e-01 -1.77e-01 -1.21e-01 -1.35e-01 -5.40e-01 -5.59e-01 ph/cm2/s 90%_error_hi 3.54e-01 1.76e-01 1.21e-01 1.94e-01 5.43e-01 5.60e-01 ph/cm2/s Fluence CPL N/A N/A N/A N/A N/A N/A erg/cm2 90%_error_low -2.61e-08 -2.41e-08 -3.10e-08 -5.27e-08 -7.63e-08 -1.06e-07 erg/cm2 90%_error_hi 2.67e-08 2.34e-08 3.35e-08 8.21e-08 7.88e-08 1.25e-07 erg/cm2 Peak flux CPL 6.68e-01 8.43e-01 3.64e-01 3.86e-02 1.91e+00 1.91e+00 ph/cm2/s 90%_error_low -3.94e-01 -2.52e-01 -1.91e-01 -3.86e-02 -5.69e-01 -5.73e-01 ph/cm2/s 90%_error_hi 4.38e-01 2.75e-01 1.61e-01 2.66e-01 5.70e-01 5.86e-01 ph/cm2/s ======================================================================
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 282.1306 -6.9790 0.0193 46.6552 141.6466 0.8337475 10.035 TRIG_00531223 Foreground time interval of the image: 0.280 5.064 (delta_t = 4.784 [sec]) Background time interval of the image: -239.288 0.280 (delta_t = 239.568 [sec])
Note: The mask-weighted lightcurves have units of either count/det or counts/sec/det, where a det is 0.4 x 0.4 = 0.16 sq cm.
Time interval is from 0.280 sec. to 5.064 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -2.50906 ( -0.394653 0.33506 ) Norm@50keV : 7.76598E-03 ( -0.00216841 0.00210312 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 54.34 using 59 PHA bins. # Reduced chi-squared = 0.9533 for 57 degrees of freedom # Null hypothesis probability = 5.755166e-01 Photon flux (15-150 keV) in 4.784 sec: 1.53431 ( -0.26393 0.26394 ) ph/cm2/s Energy fluence (15-150 keV) : 3.72513e-07 ( -7.62608e-08 7.87829e-08 ) ergs/cm2
Time interval is from 0.280 sec. to 5.064 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.49334 ( -0.508637 1.9391 ) Epeak [keV] : 18.9910 ( ) Norm@50keV : 3.25989E-02 ( ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 53.03 using 59 PHA bins. # Reduced chi-squared = 0.9470 for 56 degrees of freedom # Null hypothesis probability = 5.879339e-01 Photon flux (15-150 keV) in 4.784 sec: 1.50360 ( -0.26636 0.26146 ) ph/cm2/s Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Time interval is from 0.828 sec. to 1.828 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.98879 ( -0.444753 0.401971 ) Norm@50keV : 1.36839E-02 ( -0.00393964 0.0038217 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 58.02 using 59 PHA bins. # Reduced chi-squared = 1.018 for 57 degrees of freedom # Null hypothesis probability = 4.373036e-01 Photon flux (15-150 keV) in 1 sec: 2.04220 ( -0.54003 0.54287 ) ph/cm2/s Energy fluence (15-150 keV) : 1.26145e-07 ( -3.44111e-08 3.48232e-08 ) ergs/cm2
Time interval is from 0.828 sec. to 1.828 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: 0.17891 ( -2.35477 4.79805 ) Epeak [keV] : 45.0711 ( -27.8136 -45.0135 ) Norm@50keV : 0.207066 ( -0.218375 116.566 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 55.65 using 59 PHA bins. # Reduced chi-squared = 0.9938 for 56 degrees of freedom # Null hypothesis probability = 4.879118e-01 Photon flux (15-150 keV) in 1 sec: 1.91070 ( -0.56922 0.5702 ) ph/cm2/s Energy fluence (15-150 keV) : 1.13849e-07 ( -3.50828e-08 3.77583e-08 ) ergs/cm2
T90 = 4.432 sec. Hardness ratio (energy fluence ratio) = 0.702732489143
S(15-50 keV) = 2.472756e-07 S(50-150 keV) = 1.2524261e-07
The dash-dotted line and the dashed line traces the fluences calculated from the Band function with Epeak = 15 and 150 keV, respectively. Both lines assume a canonical values of alpha = -1 and beta = -2.5.
IMX = -8.308680870820799E-01, IMY = -6.574392750988901E-01
Time interval of the image: -239.288000 0.280000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 254.4659 35.3615 1.6 42.0 -144.6 2.2500 7.4 1.2 Her X-1 268.3185 -1.3738 12.7 49.9 161.1 0.5396 0.9 5.6 SW J1753.5-0127 288.8074 10.9207 0.8 27.8 146.6 3.5398 15.1 1.6 GRS 1915+105 299.5901 35.2645 2.5 5.5 -144.8 0.7670 4.6 3.8 Cyg X-1 308.0777 40.9382 1.3 7.3 -59.5 1.6548 9.0 1.7 Cyg X-3 326.1782 38.3268 24.2 16.9 -3.2 0.0806 0.5 0.4 Cyg X-2 357.0289 24.8628 2.7 44.9 15.5 1.4292 4.2 ------ UNKNOWN 320.0592 34.6900 2.5 11.6 9.9 0.7552 4.6 ------ UNKNOWN 11.4501 39.5664 2.8 51.6 -8.5 1.6644 4.1 ------ UNKNOWN 268.5747 54.6383 2.5 33.3 -111.7 1.3843 4.6 ------ UNKNOWN
Time interval of the image: 0.280000 5.064000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 254.3376 35.4228 7.9 42.1 -144.5 -0.0537 -1.5 7.6 Her X-1 268.3856 -1.4282 6.6 49.9 161.0 -0.1273 -1.7 1.8 SW J1753.5-0127 288.6092 10.9856 5.8 27.8 147.1 0.0539 2.0 11.4 GRS 1915+105 299.3756 35.2374 9.6 5.6 -145.5 -0.0248 -1.2 10.7 Cyg X-1 308.0362 40.7796 7.5 7.1 -59.5 -0.0305 -1.5 10.9 Cyg X-3 326.3507 38.4177 8.4 17.0 -3.4 -0.0265 -1.4 10.2 Cyg X-2 282.1306 -6.9790 1.2 46.7 141.6 0.8337 10.0 ------ UNKNOWN 266.0249 -0.8453 3.0 51.1 163.8 0.3045 3.8 ------ UNKNOWN
Time interval of the image: 115.812590 962.779600 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 244.9802 -15.6457 0.3 37.4 -118.6 37.8687 38.4 0.3 Sco X-1 254.4939 35.3110 8.4 49.6 -41.7 2.8230 1.4 2.6 Her X-1 256.0985 -37.8408 4.0 38.9 -158.4 2.0263 2.9 5.3 4U 1700-377 256.4499 -36.4328 3.2 37.7 -157.1 2.5687 3.6 0.9 GX 349+2 262.9990 -24.6882 3.7 25.5 -148.1 1.5051 3.1 3.5 GX 1+4 264.8585 -44.5203 2.7 40.5 -172.9 3.0188 4.3 6.5 4U 1735-44 268.3843 -1.3562 2.8 14.8 -80.3 2.1046 4.2 5.9 SW J1753.5-0127 270.1656 -24.9612 4.3 21.3 -160.8 1.4013 2.7 9.6 GX 5-1 270.3262 -25.8038 5.1 22.0 -162.4 1.1723 2.3 3.9 GRS 1758-258 274.0163 -14.0335 0.9 10.7 -144.2 6.2312 12.7 0.6 GX 17+2 275.8995 -30.3668 3.4 24.1 -178.7 1.8076 3.4 1.3 H1820-303 284.9773 -24.8497 5.7 18.1 159.7 1.0464 2.0 5.3 HT1900.1-2455 288.8055 10.9580 0.4 19.1 8.5 13.0866 27.7 0.9 GRS 1915+105 299.5231 35.1537 7.6 45.2 8.3 1.4744 1.5 4.4 Cyg X-1 308.1378 41.0173 3.4 53.6 12.4 7.9357 3.4 4.1 Cyg X-3 262.9754 -33.8437 6.0 32.2 -161.2 1.0761 1.9 0.9 GX 354-0 277.0338 -58.1284 2.8 51.3 171.5 6.1931 4.2 ------ UNKNOWN 287.5919 -5.8076 1.8 5.6 66.5 3.1811 6.5 ------ UNKNOWN 285.8213 24.5501 3.1 31.7 -5.5 2.4092 3.8 ------ UNKNOWN 255.1362 -41.6646 1.9 42.2 -161.6 4.3242 6.1 ------ UNKNOWN 238.9440 -40.7395 2.2 51.1 -150.2 7.7050 5.3 ------ UNKNOWN UNKNOWN