Analysis Summary
Notes:
- 1) No attempt has been made to eliminate the non-significant decimal places.
- 2) This batgrbproduct analysis is done using the HEASARC data.
- 3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
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BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Thu Mar 17 18:07:40 EDT 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger675998
======================================================================
Trigger: 00675998 Segment: 000
BAT Trigger Time: 478102872.32 [s; MET]
Trigger Stop: 478102899.2 [s; MET]
UTC: 2016-02-25T14:20:56.426440 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 164.2420743311 Dec: 53.6552363651881 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.62
Image Trigger?: NO
Rate S/N Ratio: 10.816653826392 [ if not an image trigger ]
Image S/N Ratio: 8.62
Analysis Position: [ source = BAT ]
RA: 164.2420743311 Dec: 53.6552363651881 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 164.217310471855 Dec: 53.6605408842222 [deg; J2000]
{ 10h 56m 52.2s , +53d 39' 37.9" }
+/- 1.93152477858558 [arcmin] (estimated 90% radius based on SNR)
+/- 0.907527613699469 [arcmin] (formal 1-sigma fit error)
SNR: 11.876525431041
Angular difference between the analysis and refined position is 0.936268 arcmin
Partial Coding Fraction: 0.3554688 [ including projection effects ]
Duration
T90: 157.456000030041 +/- 70.4915463812023
Measured from: -23.8320000171661
to: 133.624000012875 [s; relative to TRIGTIME]
T50: 38.336000084877 +/- 11.2071206291115
Measured from: -0.920000016689301
to: 37.4160000681877 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 37.1320000290871
to: 38.1320000290871 [s; relative to TRIGTIME]
Total Fluence
Measured from: -30.3759999871254
to: 135.287999987602 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.715580 0.801375 0.708217 0.172508
0.113178 0.116681 0.100292 0.084164 [error]
Peak 0.035072 0.024164 0.047075 0.013563
0.009218 0.010029 0.008325 0.006626 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 165.664 -30.376 135.288
T90 157.456 -23.832 133.624
T50 38.336 -0.920 37.416
Peak 1.000 37.132 38.132
====== 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 -1.568 -0.241 0.238 - - - 1.02e-03 -1.45e-04 1.44e-04 56.930 57
CPL -1.165 -0.620 1.213 104.125 -77.445 -104.125 1.64e-03 -1.64e-03 4.86e-03 56.460 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 -1.167 -0.413 0.453 - - - 8.65e-03 -2.02e-03 1.95e-03 45.690 57
CPL -1.170 1.170 1.069 9999.350 N/A N/A 8.71e-03 N/A N/A 45.700 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 2.29e-07 4.03e-07 5.44e-07 1.51e-06 1.58e-06 2.69e-06 erg/cm2
90%_error_low -5.22e-08 -5.91e-08 -9.90e-08 -5.09e-07 -2.38e-07 -6.03e-07 erg/cm2
90%_error_hi 5.54e-08 5.85e-08 9.78e-08 6.55e-07 2.40e-07 7.15e-07 erg/cm2
Peak flux PL 2.59e-01 3.18e-01 2.83e-01 4.35e-01 1.01e+00 1.30e+00 ph/cm2/s
90%_error_low -1.20e-01 -9.96e-02 -6.70e-02 -1.94e-01 -2.49e-01 -2.86e-01 ph/cm2/s
90%_error_hi 1.43e-01 9.41e-02 6.53e-02 2.79e-01 2.51e-01 2.88e-01 ph/cm2/s
Fluence CPL 2.14e-07 4.21e-07 5.60e-07 8.49e-07 1.54e-06 2.04e-06 erg/cm2
90%_error_low -6.42e-08 -7.12e-08 -1.07e-07 -6.09e-07 -2.62e-07 -6.69e-07 erg/cm2
90%_error_hi 6.48e-08 7.63e-08 1.11e-07 1.21e-06 2.59e-07 8.89e-07 erg/cm2
Peak flux CPL 2.59e-01 3.19e-01 2.83e-01 4.45e-01 1.02e+00 1.31e+00 ph/cm2/s
90%_error_low N/A N/A N/A N/A N/A -3.02e-01 ph/cm2/s
90%_error_hi N/A N/A N/A N/A N/A 2.69e-01 ph/cm2/s
======================================================================
Special notes of this burst