====================================================================== BAT GRB EVENT DATA PROCESSING REPORT Process Script Ver: batgrbproduct v2.46 Process Start Time: Mon Jan 20 07:11:24 EST 2014 Host Name: batevent1 Current Working Dir: /local/data/batevent/batevent_reproc/trigger291728 ====================================================================== Trigger: 00291728 Segment: 000 BAT Trigger Time: 212015074.624 [s; MET] Trigger Stop: 212015075.648 [s; MET] UTC: 2007-09-20T21:04:32.386340 [includes UTCF correction] Where From?: TDRSS position message BAT RA: 0.144108470626363 Dec: -34.8186092179982 [deg; J2000] Catalogged Source?: NO Point Source?: YES GRB Indicated?: YES [ by BAT flight software ] Image S/N Ratio: 7.94 Image Trigger?: NO Rate S/N Ratio: 14.1067359796659 [ if not an image trigger ] Image S/N Ratio: 7.94 Analysis Position: [ source = BAT ] RA: 0.144108470626363 Dec: -34.8186092179982 [deg; J2000] Refined Position: [ source = BAT pre-slew burst ] RA: 0.118000545972279 Dec: -34.8455819705286 [deg; J2000] { 00h 00m 28.3s , -34d 50' 44.1" } +/- 0.98829579186739 [arcmin] (estimated 90% radius based on SNR) +/- 0.410696724987387 [arcmin] (formal 1-sigma fit error) SNR: 30.9330499324815 Angular difference between the analysis and refined position is 2.066981 arcmin Partial Coding Fraction: 1.03125 [ including projection effects ] Duration T90: 22.2560000121593 +/- 2.79212104121582 Measured from: -11.2080000042915 to: 11.0480000078678 [s; relative to TRIGTIME] T50: 9.41200000047684 +/- 1.20058650862768 Measured from: -4.55200001597404 to: 4.85999998450279 [s; relative to TRIGTIME] Fluence Peak Flux (peak 1 second) Measured from: -1.04399999976158 to: -0.0439999997615814 [s; relative to TRIGTIME] Total Fluence Measured from: -14.1200000047684 to: 13.3519999980927 [s; relative to TRIGTIME] Band 1 Band 2 Band 3 Band 4 15-25 25-50 50-100 100-350 keV Total 0.491465 0.679196 0.279561 0.050297 0.024552 0.025822 0.022343 0.019248 [error] Peak 0.031941 0.044404 0.020418 0.008319 0.004850 0.005180 0.004418 0.003793 [error] [ fluence units of on-axis counts / fully illuminated detector ] ====================================================================== ====== Table of the duration information ============================= Value tstart tstop T100 27.472 -14.120 13.352 T90 22.256 -11.208 11.048 T50 9.412 -4.552 4.860 Peak 1.000 -1.044 -0.044 ====== 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 -1.875 -0.094 0.092 - - - 3.21e-03 -1.92e-04 1.90e-04 79.010 57 CPL -0.385 -0.541 0.625 44.717 -3.813 5.192 2.29e-02 -1.17e-02 2.98e-02 51.000 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 -1.667 -0.258 0.250 - - - 6.40e-03 -1.01e-03 9.83e-04 54.510 57 CPL -1.675 -0.251 0.269 9999.270 -9999.260 -9999.270 6.36e-03 -9.77e-04 7.63e-03 54.520 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 1.60e-07 2.35e-07 2.56e-07 5.23e-07 8.11e-07 1.17e-06 erg/cm2 90%_error_low -1.23e-08 -1.20e-08 -2.07e-08 -8.05e-08 -4.81e-08 -1.02e-07 erg/cm2 90%_error_hi 1.25e-08 1.20e-08 2.08e-08 8.99e-08 4.86e-08 1.10e-07 erg/cm2 Peak flux PL 3.09e-01 2.82e-01 1.77e-01 1.71e-01 8.40e-01 9.39e-01 ph/cm2/s 90%_error_low -6.45e-02 -3.83e-02 -3.67e-02 -6.12e-02 -1.13e-01 -1.32e-01 ph/cm2/s 90%_error_hi 6.66e-02 3.83e-02 3.68e-02 8.04e-02 1.13e-01 1.33e-01 ph/cm2/s Fluence CPL 1.39e-07 2.72e-07 2.31e-07 6.69e-08 6.95e-07 7.08e-07 erg/cm2 90%_error_low -1.45e-08 -1.76e-08 -2.93e-08 -3.28e-08 -5.41e-08 -6.25e-08 erg/cm2 90%_error_hi 1.46e-08 1.79e-08 2.77e-08 5.88e-08 5.75e-08 7.96e-08 erg/cm2 Peak flux CPL 3.13e-01 2.77e-01 1.77e-01 1.70e-01 8.44e-01 9.65e-01 ph/cm2/s 90%_error_low -8.04e-02 -4.07e-02 -4.27e-02 N/A -1.39e-01 -2.02e-01 ph/cm2/s 90%_error_hi 7.57e-02 5.36e-02 4.41e-02 N/A 1.31e-01 1.22e-01 ph/cm2/s ======================================================================
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 0.1180 -34.8456 0.0062 7.8147 155.7131 1.6092794 30.933 TRIG_00291728 Foreground time interval of the image: -14.120 13.352 (delta_t = 27.472 [sec]) Background time interval of the image: -105.723 -14.120 (delta_t = 91.603 [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 -14.120 sec. to 13.352 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.87483 ( -0.093857 0.0922454 ) Norm@50keV : 3.21014E-03 ( -0.000191917 0.000190491 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 79.01 using 59 PHA bins. # Reduced chi-squared = 1.386 for 57 degrees of freedom # Null hypothesis probability = 2.844897e-02 Photon flux (15-150 keV) in 27.47 sec: 0.455873 ( -0.023669 0.023685 ) ph/cm2/s Energy fluence (15-150 keV) : 8.10791e-07 ( -4.81173e-08 4.85961e-08 ) ergs/cm2
Time interval is from -14.120 sec. to 13.352 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -0.385418 ( -0.541302 0.624621 ) Epeak [keV] : 44.7173 ( -3.81235 5.19255 ) Norm@50keV : 2.29283E-02 ( -0.0116758 0.0298197 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 51.00 using 59 PHA bins. # Reduced chi-squared = 0.9107 for 56 degrees of freedom # Null hypothesis probability = 6.641043e-01 Photon flux (15-150 keV) in 27.47 sec: 0.426138 ( -0.025418 0.025485 ) ph/cm2/s Energy fluence (15-150 keV) : 6.94942e-07 ( -5.40882e-08 5.74755e-08 ) ergs/cm2
Time interval is from -1.044 sec. to -0.044 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.66733 ( -0.257682 0.249685 ) Norm@50keV : 6.39529E-03 ( -0.00101239 0.000983376 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 54.51 using 59 PHA bins. # Reduced chi-squared = 0.9563 for 57 degrees of freedom # Null hypothesis probability = 5.691513e-01 Photon flux (15-150 keV) in 1 sec: 0.839935 ( -0.113452 0.113468 ) ph/cm2/s Energy fluence (15-150 keV) : 5.93882e-08 ( -9.86827e-09 1.0127e-08 ) ergs/cm2
Time interval is from -1.044 sec. to -0.044 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.67464 ( -0.251491 0.268549 ) Epeak [keV] : 9999.27 ( -9999.35 -9999.36 ) Norm@50keV : 6.36494E-03 ( -0.0010041 0.00760374 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 54.52 using 59 PHA bins. # Reduced chi-squared = 0.9735 for 56 degrees of freedom # Null hypothesis probability = 5.311196e-01 Photon flux (15-150 keV) in 1 sec: 0.843952 ( -0.139067 0.131006 ) ph/cm2/s Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
T90 = 22.256 sec. Hardness ratio (energy fluence ratio) = 0.846681256701
S(15-50 keV) = 4.10988e-07 S(50-150 keV) = 2.8396456e-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 = -1.250973248164751E-01, IMY = -5.644920245335627E-02
Time interval of the image: -105.723400 -14.120000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 285.0522 -24.9976 14.0 56.8 -6.9 0.3858 0.8 4.7 HT1900.1-2455 324.5652 -1.2730 2.2 44.6 50.2 2.2713 5.2 ------ UNKNOWN 58.9484 -63.7931 2.6 46.4 -124.0 1.6872 4.5 ------ UNKNOWN
Time interval of the image: -14.120000 13.352000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 285.0345 -24.8809 12.2 56.9 -6.8 0.2852 1.0 2.4 HT1900.1-2455 329.0418 -30.6612 2.4 20.0 16.5 0.2849 4.9 ------ UNKNOWN 0.1180 -34.8456 0.4 7.8 155.7 1.6095 30.9 ------ UNKNOWN
Time interval of the image: 739.676580 962.490400 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 61.0845 9.9266 2.3 54.9 165.6 4.4443 5.1 ------ UNKNOWN 49.0320 0.0494 2.7 40.0 159.4 1.1621 4.3 ------ UNKNOWN 53.7315 -5.0620 2.4 38.5 170.1 1.0740 4.8 ------ UNKNOWN 338.5309 -63.5572 2.5 41.8 -29.2 1.0261 4.7 ------ UNKNOWN