====================================================================== BAT GRB EVENT DATA PROCESSING REPORT Process Script Ver: batgrbproduct v2.46 Process Start Time: Thu Sep 11 12:38:05 EDT 2014 Host Name: batevent1 Current Working Dir: /local/data/batevent/batevent_reproc/trigger337889 ====================================================================== Trigger: 00337889 Segment: 000 BAT Trigger Time: 251569275.2 [s; MET] Trigger Stop: 251569275.712 [s; MET] UTC: 2008-12-21T16:21:11.847580 [includes UTCF correction] Where From?: TDRSS position message BAT RA: 15.8049817084335 Dec: -24.5258354741473 [deg; J2000] Catalogged Source?: NO Point Source?: YES GRB Indicated?: YES [ by BAT flight software ] Image S/N Ratio: 8.37 Image Trigger?: NO Rate S/N Ratio: 12.8452325786651 [ if not an image trigger ] Image S/N Ratio: 8.37 Analysis Position: [ source = BAT ] RA: 15.8049817084335 Dec: -24.5258354741473 [deg; J2000] Refined Position: [ source = BAT pre-slew burst ] RA: 15.8011401299552 Dec: -24.5413761046146 [deg; J2000] { 01h 03m 12.3s , -24d 32' 29.0" } +/- 0.675898739010228 [arcmin] (estimated 90% radius based on SNR) +/- 0.151390562887296 [arcmin] (formal 1-sigma fit error) SNR: 53.2285473370551 Angular difference between the analysis and refined position is 0.955724 arcmin Partial Coding Fraction: 0.6171875 [ including projection effects ] Duration T90: 33.9079999923706 +/- 0.921650681212753 Measured from: 4.61600002646446 to: 38.5240000188351 [s; relative to TRIGTIME] T50: 9.14400002360344 +/- 0.138621815705944 Measured from: 19.9160000085831 to: 29.0600000321865 [s; relative to TRIGTIME] Fluence Peak Flux (peak 1 second) Measured from: 21.4240000247955 to: 22.4240000247955 [s; relative to TRIGTIME] Total Fluence Measured from: -0.283999979496002 to: 112.316000014544 [s; relative to TRIGTIME] Band 1 Band 2 Band 3 Band 4 15-25 25-50 50-100 100-350 keV Total 9.632042 12.717831 8.323238 1.446389 0.071673 0.079141 0.071153 0.060432 [error] Peak 0.453024 0.817017 0.708130 0.186145 0.012099 0.015388 0.015110 0.009494 [error] [ fluence units of on-axis counts / fully illuminated detector ] ====================================================================== ====== Table of the duration information ============================= Value tstart tstop T100 112.600 -0.284 112.316 T90 33.908 4.616 38.524 T50 9.144 19.916 29.060 Peak 1.000 21.424 22.424 ====== 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: CPL) 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 -1.751 -0.027 0.027 - - - 1.87e-02 -2.64e-04 2.64e-04 78.060 57 CPL -1.298 -0.118 0.121 90.388 -7.652 11.936 2.92e-02 -3.12e-03 3.58e-03 32.710 56 === 1-s peak spectral analysis === (Best model with acceptable fit: N/A) 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 -1.273 -0.042 0.042 - - - 1.51e-01 -3.63e-03 3.63e-03 100.950 57 CPL -0.787 -0.176 0.184 141.902 -23.948 47.468 2.50e-01 -4.07e-02 5.08e-02 77.340 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 3.40e-06 5.37e-06 6.38e-06 1.47e-05 1.94e-05 2.99e-05 erg/cm2 90%_error_low -1.04e-07 -9.64e-08 -1.01e-07 -5.35e-07 -2.72e-07 -5.70e-07 erg/cm2 90%_error_hi 1.06e-07 9.63e-08 1.01e-07 5.48e-07 2.72e-07 5.77e-07 erg/cm2 Peak flux PL 5.01e+00 5.77e+00 4.77e+00 6.64e+00 1.79e+01 2.22e+01 ph/cm2/s 90%_error_low -2.38e-01 -1.69e-01 -1.28e-01 -3.71e-01 -4.59e-01 -5.40e-01 ph/cm2/s 90%_error_hi 2.42e-01 1.68e-01 1.28e-01 3.84e-01 4.60e-01 5.41e-01 ph/cm2/s Fluence CPL 2.98e-06 5.42e-06 6.64e-06 9.22e-06 1.89e-05 2.43e-05 erg/cm2 90%_error_low -1.41e-07 -1.01e-07 -1.21e-07 -9.70e-07 -3.03e-07 -1.03e-06 erg/cm2 90%_error_hi 1.44e-07 1.01e-07 1.22e-07 1.12e-06 3.03e-07 1.16e-06 erg/cm2 Peak flux CPL 4.41e+00 5.91e+00 5.05e+00 4.28e+00 1.75e+01 1.97e+01 ph/cm2/s 90%_error_low -3.02e-01 -1.82e-01 -1.62e-01 -5.96e-01 -4.79e-01 -7.87e-01 ph/cm2/s 90%_error_hi 3.09e-01 1.83e-01 1.63e-01 7.11e-01 4.80e-01 8.66e-01 ph/cm2/s ======================================================================
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 15.8011 -24.5414 0.0036 27.1282 37.5053 3.1141926 53.229 TRIG_00337889 Foreground time interval of the image: -0.284 10.101 (delta_t = 10.385 [sec]) Background time interval of the image: -239.200 -0.284 (delta_t = 238.916 [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 -0.284 sec. to 112.316 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.75092 ( -0.0268029 0.0268375 ) Norm@50keV : 1.86933E-02 ( -0.000264354 0.000264261 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 78.06 using 59 PHA bins. # Reduced chi-squared = 1.369 for 57 degrees of freedom # Null hypothesis probability = 3.348131e-02 Photon flux (15-150 keV) in 112.6 sec: 2.52863 ( -0.04667 0.0469 ) ph/cm2/s Energy fluence (15-150 keV) : 1.94244e-05 ( -2.71772e-07 2.71615e-07 ) ergs/cm2
Time interval is from -0.284 sec. to 112.316 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.29812 ( -0.118054 0.120914 ) Epeak [keV] : 90.3880 ( -7.65198 11.9362 ) Norm@50keV : 2.91617E-02 ( -0.00311993 0.00357767 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 32.71 using 59 PHA bins. # Reduced chi-squared = 0.5841 for 56 degrees of freedom # Null hypothesis probability = 9.945452e-01 Photon flux (15-150 keV) in 112.6 sec: 2.40695 ( -0.05402 0.05451 ) ph/cm2/s Energy fluence (15-150 keV) : 1.88799e-05 ( -3.02746e-07 3.02774e-07 ) ergs/cm2
Time interval is from 21.424 sec. to 22.424 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.27298 ( -0.0416145 0.0416825 ) Norm@50keV : 0.151181 ( -0.00363302 0.00363243 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 100.95 using 59 PHA bins. # Reduced chi-squared = 1.7710 for 57 degrees of freedom # Null hypothesis probability = 3.005099e-04 Photon flux (15-150 keV) in 1 sec: 17.9496 ( -0.4591 0.4598 ) ph/cm2/s Energy fluence (15-150 keV) : 1.50422e-06 ( -3.83684e-08 3.83682e-08 ) ergs/cm2
Time interval is from 21.424 sec. to 22.424 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -0.786642 ( -0.176343 0.183537 ) Epeak [keV] : 141.902 ( -23.9481 47.4676 ) Norm@50keV : 0.250023 ( -0.0407368 0.0507861 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 77.34 using 59 PHA bins. # Reduced chi-squared = 1.381 for 56 degrees of freedom # Null hypothesis probability = 3.098637e-02 Photon flux (15-150 keV) in 1 sec: 17.5238 ( -0.4793 0.4803 ) ph/cm2/s Energy fluence (15-150 keV) : 1.47302e-06 ( -4.07002e-08 4.05412e-08 ) ergs/cm2
T90 = 33.908 sec. Hardness ratio (energy fluence ratio) = 1.22549085619
S(15-50 keV) = 8.396408e-06 S(50-150 keV) = 1.0483433e-05
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 = 4.064442062771055E-01, IMY = -3.119349231663726E-01
Time interval of the image: -239.200000 -0.284000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 23.6112 -37.5464 3.0 16.8 66.2 0.7686 3.9 ------ UNKNOWN 322.8780 -79.0908 2.6 32.1 -139.4 0.9495 4.4 ------ UNKNOWN 329.4885 -46.5972 2.6 26.5 -70.4 1.0243 4.4 ------ UNKNOWN
Time interval of the image: -0.284000 10.100580 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 74.3773 -47.0763 2.3 41.0 136.0 0.6428 5.1 ------ UNKNOWN 5.5161 -6.8684 2.7 44.6 19.4 0.4199 4.3 528.1 UNKNOWN 15.8011 -24.5414 0.2 27.1 37.5 3.1142 53.2 ------ UNKNOWN 329.3329 -60.0040 2.3 24.0 -101.6 0.2593 5.1 ------ UNKNOWN
Time interval of the image: 57.500600 784.500600 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 51.7884 -21.2512 2.2 33.2 119.7 3.9071 5.1 ------ UNKNOWN 35.3107 -1.5484 2.5 29.7 70.3 2.8980 4.6 ------ UNKNOWN 357.2430 7.0106 2.4 36.3 -4.3 2.5899 4.8 451.8 UNKNOWN 357.7401 5.7042 2.6 35.0 -4.6 2.3906 4.3 368.0 UNKNOWN 354.6919 -47.6952 2.9 28.6 -121.6 1.7650 4.0 ------ UNKNOWN 328.4714 -10.2938 4.1 47.1 -53.1 6.2996 2.8 ------ UNKNOWN