====================================================================== BAT GRB EVENT DATA PROCESSING REPORT Process Script Ver: batgrbproduct v2.46 Process Start Time: Mon Jan 20 03:08:18 EST 2014 Host Name: batevent1 Current Working Dir: /local/data/batevent/batevent_reproc/trigger308041 ====================================================================== Trigger: 00308041 Segment: 000 BAT Trigger Time: 228541279.552 [s; MET] Trigger Stop: 228541280.576 [s; MET] UTC: 2008-03-30T03:41:16.872120 [includes UTCF correction] Where From?: TDRSS position message BAT RA: 169.301665972192 Dec: 30.5703275537686 [deg; J2000] Catalogged Source?: NO Point Source?: YES GRB Indicated?: YES [ by BAT flight software ] Image S/N Ratio: 7.58 Image Trigger?: NO Rate S/N Ratio: 10.9544511501033 [ if not an image trigger ] Image S/N Ratio: 7.58 Analysis Position: [ source = BAT ] RA: 169.301665972192 Dec: 30.5703275537686 [deg; J2000] Refined Position: [ source = BAT pre-slew burst ] RA: 169.270635843616 Dec: 30.6104622445136 [deg; J2000] { 11h 17m 05.0s , +30d 36' 37.7" } +/- 1.83809059351469 [arcmin] (estimated 90% radius based on SNR) +/- 0.791458960053399 [arcmin] (formal 1-sigma fit error) SNR: 12.748273202466 Angular difference between the analysis and refined position is 2.892661 arcmin Partial Coding Fraction: 0.53125 [ including projection effects ] Duration T90: 60.363999992609 +/- 36.3982559836483 Measured from: -0.0799999833106995 to: 60.2840000092983 [s; relative to TRIGTIME] T50: 31.1000000238419 +/- 25.1133284827267 Measured from: 1.34000000357628 to: 32.4400000274181 [s; relative to TRIGTIME] Fluence Peak Flux (peak 1 second) Measured from: 0.440000027418137 to: 1.44000002741814 [s; relative to TRIGTIME] Total Fluence Measured from: -0.547999978065491 to: 62.1200000047684 [s; relative to TRIGTIME] Band 1 Band 2 Band 3 Band 4 15-25 25-50 50-100 100-350 keV Total 0.350104 0.224142 0.069993 0.050452 0.042680 0.043759 0.038567 0.034177 [error] Peak 0.054930 0.033829 0.016402 0.009096 0.007106 0.007336 0.005930 0.005076 [error] [ fluence units of on-axis counts / fully illuminated detector ] ====================================================================== ====== Table of the duration information ============================= Value tstart tstop T100 62.668 -0.548 62.120 T90 60.364 -0.080 60.284 T50 31.100 1.340 32.440 Peak 1.000 0.440 1.440 ====== 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 -2.653 -0.557 0.448 - - - 4.48e-04 -1.72e-04 1.74e-04 51.470 57 CPL -1.981 -0.017 1.127 0.999 -0.615 21.913 1.20e-03 -4.07e-04 8.00e-04 52.990 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 -2.549 -0.579 0.463 - - - 4.66e-03 -1.81e-03 1.76e-03 59.790 57 CPL -1.986 1.986 1.986 1.080 278.868 -1.080 9.60e-03 -9.60e-03 -4.37e-03 61.610 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 1.07e-07 9.87e-08 6.27e-08 6.12e-08 2.94e-07 3.30e-07 erg/cm2 90%_error_low -2.28e-08 -2.50e-08 -2.99e-08 -4.15e-08 -7.16e-08 -9.52e-08 erg/cm2 90%_error_hi 2.28e-08 2.30e-08 3.62e-08 8.27e-08 7.85e-08 1.28e-07 erg/cm2 Peak flux PL 5.31e-01 2.90e-01 9.90e-02 4.40e-02 9.44e-01 9.64e-01 ph/cm2/s 90%_error_low -1.30e-01 -7.11e-02 -4.70e-02 -2.95e-02 -1.80e-01 -1.87e-01 ph/cm2/s 90%_error_hi 1.31e-01 6.48e-02 5.38e-02 5.47e-02 1.80e-01 1.88e-01 ph/cm2/s Fluence CPL 1.03e-07 6.83e-08 3.14e-08 2.51e-08 2.13e-07 2.27e-07 erg/cm2 90%_error_low -2.38e-08 -3.57e-08 -2.43e-08 -2.28e-08 -8.36e-08 -9.67e-08 erg/cm2 90%_error_hi 2.38e-08 4.61e-08 5.80e-08 1.17e-07 1.41e-07 2.16e-07 erg/cm2 Peak flux CPL 4.63e-01 1.15e-01 6.34e-02 1.47e-02 9.18e-01 9.17e-01 ph/cm2/s 90%_error_low -1.02e-01 1.29e-01 N/A N/A -1.73e-01 N/A ph/cm2/s 90%_error_hi 1.56e-01 2.59e-01 N/A N/A 1.85e-01 N/A ph/cm2/s ======================================================================
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 169.2706 30.6105 0.0151 27.6815 53.9119 0.5591020 12.748 TRIG_00308041 Foreground time interval of the image: -0.548 11.349 (delta_t = 11.897 [sec]) Background time interval of the image: -239.552 -0.548 (delta_t = 239.004 [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 -0.548 sec. to 62.120 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -2.65319 ( -0.556789 0.448208 ) Norm@50keV : 4.48251E-04 ( -0.000171823 0.000173541 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 51.47 using 59 PHA bins. # Reduced chi-squared = 0.9030 for 57 degrees of freedom # Null hypothesis probability = 6.816745e-01 Photon flux (15-150 keV) in 62.67 sec: 9.70283E-02 ( -0.0171715 0.0172117 ) ph/cm2/s Energy fluence (15-150 keV) : 2.94205e-07 ( -7.1628e-08 7.85299e-08 ) ergs/cm2
Time interval is from -0.548 sec. to 62.120 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.98097 ( -0.0172773 1.12702 ) Epeak [keV] : 0.999022 ( -0.614761 21.9135 ) Norm@50keV : 1.19525E-03 ( -0.000406158 0.000801018 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 52.99 using 59 PHA bins. # Reduced chi-squared = 0.9462 for 56 degrees of freedom # Null hypothesis probability = 5.895831e-01 Photon flux (15-150 keV) in 62.67 sec: 8.08363E-02 ( -0.0232509 0.0287417 ) ph/cm2/s Energy fluence (15-150 keV) : 2.12824e-07 ( -8.35679e-08 1.40913e-07 ) ergs/cm2
Time interval is from 0.440 sec. to 1.440 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -2.54875 ( -0.578482 0.463209 ) Norm@50keV : 4.66039E-03 ( -0.00181148 0.00175934 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 59.79 using 59 PHA bins. # Reduced chi-squared = 1.049 for 57 degrees of freedom # Null hypothesis probability = 3.745655e-01 Photon flux (15-150 keV) in 1 sec: 0.943691 ( -0.179999 0.180029 ) ph/cm2/s Energy fluence (15-150 keV) : 4.72498e-08 ( -1.22448e-08 1.31854e-08 ) ergs/cm2
Time interval is from 0.440 sec. to 1.440 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -3.25122 ( 1.98632 1.98632 ) Epeak [keV] : 367.101 ( -108.477 -388.425 ) Norm@50keV : 2.06015E-03 ( -0.00183985 0.00339243 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 57.57 using 59 PHA bins. # Reduced chi-squared = 1.028 for 56 degrees of freedom # Null hypothesis probability = 4.168115e-01 Photon flux (15-150 keV) in 1 sec: 0.918178 ( -0.173203 0.185242 ) ph/cm2/s Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
T90 = 60.364 sec. Hardness ratio (energy fluence ratio) = 0.635887487227
S(15-50 keV) = 2.0597731e-07 S(50-150 keV) = 8.822002e-08
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 = 3.090042556740210E-01, IMY = -4.239350379919042E-01
Time interval of the image: -239.552000 -0.548000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 194.0676 44.1595 2.6 44.2 23.9 1.5451 4.4 ------ UNKNOWN 166.0728 38.1850 2.1 23.7 37.7 0.9364 5.6 ------ UNKNOWN 147.6045 30.2855 2.5 10.5 78.5 0.6561 4.6 ------ UNKNOWN 190.2619 56.8312 2.4 41.7 5.3 1.1546 4.7 ------ UNKNOWN 134.8017 59.2915 2.4 24.2 -38.5 0.7905 4.9 ------ UNKNOWN
Time interval of the image: -0.548000 11.348600 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 169.2706 30.6105 0.9 27.7 53.9 0.5592 12.7 ------ UNKNOWN 94.0795 62.2995 2.1 37.8 -67.0 0.3564 5.5 ------ UNKNOWN
Time interval of the image: 59.548590 962.501400 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 161.1037 29.9478 2.8 7.1 -150.8 1.5548 4.1 ------ UNKNOWN 166.1185 38.2419 1.2 8.1 -75.7 3.8069 9.3 ------ UNKNOWN 199.8875 50.2033 2.8 30.1 -17.2 1.7016 4.1 ------ UNKNOWN 217.3439 64.6344 2.7 45.1 -30.9 3.8643 4.2 ------ UNKNOWN 134.9291 66.1614 4.2 41.2 -78.0 5.3577 2.8 ------ UNKNOWN