====================================================================== BAT GRB EVENT DATA PROCESSING REPORT Process Script Ver: batgrbproduct v2.46 Process Start Time: Wed Jan 22 22:16:09 EST 2014 Host Name: batevent1 Current Working Dir: /local/data/batevent/batevent_reproc/trigger115135 ====================================================================== Trigger: 00115135 Segment: 000 BAT Trigger Time: 135749511.104 [s; MET] Trigger Stop: 135749516.608 [s; MET] UTC: 2005-04-21T04:11:51.617220 [includes UTCF correction] Where From?: TDRSS position message BAT RA: 307.241049309564 Dec: 73.6651583611281 [deg; J2000] Catalogged Source?: NO Point Source?: YES GRB Indicated?: YES [ by BAT flight software ] Image S/N Ratio: 6 Image Trigger?: NO Rate S/N Ratio: 9.8488578017961 [ if not an image trigger ] Image S/N Ratio: 6 Analysis Position: [ source = BAT ] RA: 307.241049309564 Dec: 73.6651583611281 [deg; J2000] Refined Position: [ source = BAT pre-slew burst ] RA: 307.381074949612 Dec: 73.6735775238724 [deg; J2000] { 20h 29m 31.5s , +73d 40' 24.9" } +/- 2.80921756557008 [arcmin] (estimated 90% radius based on SNR) +/- 1.23115512917753 [arcmin] (formal 1-sigma fit error) SNR: 6.95475971002607 Angular difference between the analysis and refined position is 2.415748 arcmin Partial Coding Fraction: 0.875 [ including projection effects ] Duration T90: 8.40800002217293 +/- 3.38710555700506 Measured from: 0.199999988079071 to: 8.608000010252 [s; relative to TRIGTIME] T50: 4.02400001883507 +/- 3.04489934600471 Measured from: 0.951999992132187 to: 4.97600001096725 [s; relative to TRIGTIME] Fluence Peak Flux (peak 1 second) Measured from: 0.403999984264374 to: 1.40399998426437 [s; relative to TRIGTIME] Total Fluence Measured from: 0.0439999997615814 to: 8.74000000953674 [s; relative to TRIGTIME] Band 1 Band 2 Band 3 Band 4 15-25 25-50 50-100 100-350 keV Total 0.047390 0.058978 0.041760 0.012214 0.013194 0.013827 0.012153 0.010354 [error] Peak 0.016528 0.015836 0.016000 0.003038 0.004604 0.004824 0.004292 0.003581 [error] [ fluence units of on-axis counts / fully illuminated detector ] ====================================================================== ====== Table of the duration information ============================= Value tstart tstop T100 8.696 0.044 8.740 T90 8.408 0.200 8.608 T50 4.024 0.952 4.976 Peak 1.000 0.404 1.404 ====== 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 -1.666 -0.452 0.416 - - - 1.15e-03 -3.24e-04 3.13e-04 31.140 57 CPL -0.428 -1.706 3.056 58.096 -44.749 -58.096 5.37e-03 -5.37e-03 2.21e-01 30.070 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 -1.627 -0.497 0.458 - - - 3.33e-03 -9.87e-04 9.40e-04 52.850 57 CPL -1.376 -1.045 1.959 117.892 -117.892 -117.892 4.54e-03 -4.54e-03 4.26e-02 52.880 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 1.49e-08 2.48e-08 3.13e-08 7.86e-08 9.29e-08 1.50e-07 erg/cm2 90%_error_low -5.27e-09 -6.15e-09 -1.14e-08 -4.54e-08 -2.68e-08 -5.92e-08 erg/cm2 90%_error_hi 5.67e-09 6.13e-09 1.15e-08 7.34e-08 2.78e-08 8.16e-08 erg/cm2 Peak flux PL 1.55e-01 1.44e-01 9.35e-02 9.35e-02 4.31e-01 4.86e-01 ph/cm2/s 90%_error_low -6.08e-02 -3.85e-02 -3.51e-02 -5.47e-02 -1.13e-01 -1.30e-01 ph/cm2/s 90%_error_hi 6.61e-02 3.82e-02 3.45e-02 8.58e-02 1.13e-01 1.32e-01 ph/cm2/s Fluence CPL 1.28e-08 2.85e-08 3.18e-08 1.62e-08 8.44e-08 8.94e-08 erg/cm2 90%_error_low -6.60e-09 -1.03e-08 -1.40e-08 N/A -2.67e-08 -3.14e-08 erg/cm2 90%_error_hi 6.65e-09 9.16e-09 1.34e-08 N/A 3.08e-08 8.74e-08 erg/cm2 Peak flux CPL 1.54e-01 1.45e-01 9.39e-02 8.72e-02 4.31e-01 4.80e-01 ph/cm2/s 90%_error_low N/A -3.90e-02 -3.55e-02 -8.72e-02 -1.15e-01 -1.55e-01 ph/cm2/s 90%_error_hi N/A 5.05e-02 3.86e-02 5.25e-02 1.13e-01 1.35e-01 ph/cm2/s ======================================================================
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name 307.3811 73.6736 0.0276 25.3449 3.9284 0.1676551 6.955 TRIG_00115135 Foreground time interval of the image: 0.044 8.740 (delta_t = 8.696 [sec]) Background time interval of the image: -250.803 0.044 (delta_t = 250.847 [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 0.044 sec. to 8.740 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.66565 ( -0.452092 0.415899 ) Norm@50keV : 1.15066E-03 ( -0.000323846 0.000312581 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 31.14 using 59 PHA bins. # Reduced chi-squared = 0.5464 for 57 degrees of freedom # Null hypothesis probability = 9.979263e-01 Photon flux (15-150 keV) in 8.696 sec: 0.151038 ( -0.037403 0.037422 ) ph/cm2/s Energy fluence (15-150 keV) : 9.29307e-08 ( -2.68142e-08 2.77977e-08 ) ergs/cm2
Time interval is from 0.044 sec. to 8.740 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -0.4278 ( -1.70978 3.05239 ) Epeak [keV] : 58.0957 ( -44.7126 -58.0588 ) Norm@50keV : 5.36831E-03 ( -0.00539887 0.221247 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 30.07 using 59 PHA bins. # Reduced chi-squared = 0.5370 for 56 degrees of freedom # Null hypothesis probability = 9.982266e-01 Photon flux (15-150 keV) in 8.696 sec: 0.144767 ( -0.038974 0.038911 ) ph/cm2/s Energy fluence (15-150 keV) : 8.43995e-08 ( -2.66711e-08 3.07971e-08 ) ergs/cm2
Time interval is from 0.404 sec. to 1.404 sec. Spectral model in power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.62731 ( -0.497155 0.458429 ) Norm@50keV : 3.32778E-03 ( -0.00098682 0.000940142 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 52.85 using 59 PHA bins. # Reduced chi-squared = 0.9271 for 57 degrees of freedom # Null hypothesis probability = 6.315865e-01 Photon flux (15-150 keV) in 1 sec: 0.431348 ( -0.112845 0.112916 ) ph/cm2/s Energy fluence (15-150 keV) : 3.10277e-08 ( -9.48848e-09 9.78168e-09 ) ergs/cm2
Time interval is from 0.404 sec. to 1.404 sec. Spectral model in the cutoff power-law: ------------------------------------------------------------ Parameters : value lower 90% higher 90% Photon index: -1.59496 ( -0.9523 2.0521 ) Epeak [keV] : 589.988 ( -567.36 -567.36 ) Norm@50keV : 3.46381E-03 ( -0.00350064 0.0436363 ) ------------------------------------------------------------ #Fit statistic : Chi-Squared = 52.84 using 59 PHA bins. # Reduced chi-squared = 0.9436 for 56 degrees of freedom # Null hypothesis probability = 5.950983e-01 Photon flux (15-150 keV) in 1 sec: 0.430702 ( -0.115237 0.113433 ) ph/cm2/s Energy fluence (15-150 keV) : 3.09065e-08 ( -1.02684e-08 9.83997e-09 ) ergs/cm2
T90 = 8.408 sec. Hardness ratio (energy fluence ratio) = 1.26081077484
S(15-50 keV) = 3.972598e-08 S(50-150 keV) = 5.320651e-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 = 4.725450849780354E-01, IMY = -3.245009793947397E-02
Time interval of the image: -250.803400 0.044000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 308.0628 40.9984 4.6 57.4 -6.1 1.8859 2.5 3.5 Cyg X-3 326.0003 38.3083 5.2 57.9 -22.7 1.8428 2.2 8.1 Cyg X-2 253.9097 58.0731 2.7 42.0 40.1 1.4334 4.3 ------ UNKNOWN 153.1207 49.7330 3.2 36.6 131.9 1.0670 3.6 ------ UNKNOWN 295.2403 50.2489 2.2 49.3 6.3 1.7261 5.2 ------ UNKNOWN 99.4789 38.2035 3.3 41.6 -163.9 0.8414 3.5 ------ UNKNOWN 350.6430 41.7161 2.7 50.7 -44.6 3.0143 4.2 ------ UNKNOWN 57.5226 37.9424 2.3 43.5 -114.7 3.2236 5.0 ------ UNKNOWN 70.4344 31.7454 3.4 48.5 -130.3 2.7811 3.4 ------ UNKNOWN
Time interval of the image: 0.044000 8.740000 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 308.1880 40.8724 7.5 57.5 -6.2 0.2152 1.6 6.0 Cyg X-3 325.9982 38.3266 6.3 57.9 -22.7 -0.2426 -1.8 8.2 Cyg X-2 307.3804 73.6743 1.6 25.3 3.9 0.1705 7.1 ------ UNKNOWN 301.0211 45.3782 2.5 53.7 0.7 0.3854 4.6 ------ UNKNOWN
Time interval of the image: 97.596600 302.964200 # RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name # [deg] [deg] ['] [deg] [deg] ['] 299.5853 35.2003 0.3 38.6 5.5 7.1891 38.5 0.3 Cyg X-1 308.0869 41.0028 1.7 32.7 -5.7 1.0812 7.0 3.2 Cyg X-3 325.9959 38.2290 5.0 36.6 -29.6 0.4617 2.3 10.0 Cyg X-2