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: Fri Jun 26 00:15:42 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger641698
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Trigger: 00641698 Segment: 000
BAT Trigger Time: 454402149.44 [s; MET]
Trigger Stop: 454402149.952 [s; MET]
UTC: 2015-05-27T06:48:55.804620 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 288.957781485581 Dec: 4.19407695074873 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.07
Image Trigger?: NO
Rate S/N Ratio: 16.0312195418814 [ if not an image trigger ]
Image S/N Ratio: 9.07
Analysis Position: [ source = BAT ]
RA: 288.957781485581 Dec: 4.19407695074873 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 288.962786011235 Dec: 4.19625221640243 [deg; J2000]
{ 19h 15m 51.1s , +04d 11' 46.5" }
+/- 0.868057129532653 [arcmin] (estimated 90% radius based on SNR)
+/- 0.288853126344496 [arcmin] (formal 1-sigma fit error)
SNR: 37.2311551353881
Angular difference between the analysis and refined position is 0.326672 arcmin
Partial Coding Fraction: 1 [ including projection effects ]
Duration
T90: 108.800000011921 +/- 84.1058050290632
Measured from: -106.815999984741
to: 1.98400002717972 [s; relative to TRIGTIME]
T50: 13.0880000591278 +/- 1.67999995946884
Measured from: -16.3840000033379
to: -3.29599994421005 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -13.8679999709129
to: -12.8679999709129 [s; relative to TRIGTIME]
Total Fluence
Measured from: -111.856000006199
to: 12.1759999990463 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.698444 2.277963 1.311061 0.235896
0.088824 0.090265 0.082060 0.080231 [error]
Peak 0.088507 0.148304 0.096675 0.018081
0.008185 0.008800 0.007846 0.006435 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 124.032 -111.856 12.176
T90 108.800 -106.816 1.984
T50 13.088 -16.384 -3.296
Peak 1.000 -13.868 -12.868
====== 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 -1.707 -0.097 0.096 - - - 2.80e-03 -1.54e-04 1.53e-04 54.420 57
CPL -1.408 -0.340 0.410 91.238 -29.372 -91.238 4.04e-03 -1.32e-03 2.58e-03 52.550 56
=== 1-s peak 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 -1.481 -0.121 0.119 - - - 2.23e-02 -1.68e-03 1.67e-03 72.260 57
CPL -0.389 -0.551 0.643 70.472 -11.591 25.814 8.29e-02 -3.96e-02 9.60e-02 59.220 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 5.39e-07 8.73e-07 1.07e-06 2.58e-06 3.21e-06 5.06e-06 erg/cm2
90%_error_low -4.49e-08 -4.43e-08 -8.09e-08 -3.93e-07 -1.86e-07 -4.64e-07 erg/cm2
90%_error_hi 4.61e-08 4.43e-08 8.12e-08 4.41e-07 1.88e-07 5.03e-07 erg/cm2
Peak flux PL 9.00e-01 9.16e-01 6.56e-01 7.50e-01 2.77e+00 3.22e+00 ph/cm2/s
90%_error_low -1.05e-01 -6.94e-02 -6.19e-02 -1.32e-01 -2.02e-01 -2.41e-01 ph/cm2/s
90%_error_hi 1.08e-01 6.92e-02 6.17e-02 1.48e-01 2.02e-01 2.42e-01 ph/cm2/s
Fluence CPL 5.16e-07 8.99e-07 1.07e-06 1.55e-06 3.11e-06 4.04e-06 erg/cm2
90%_error_low -5.28e-08 -5.47e-08 -8.48e-08 -6.92e-07 -2.28e-07 -7.35e-07 erg/cm2
90%_error_hi 5.36e-08 5.58e-08 8.47e-08 1.15e-06 2.28e-07 1.21e-06 erg/cm2
Peak flux CPL 7.58e-01 1.02e+00 6.97e-01 2.49e-01 2.65e+00 2.72e+00 ph/cm2/s
90%_error_low -1.23e-01 -8.84e-02 -7.22e-02 -1.06e-01 -2.09e-01 -2.36e-01 ph/cm2/s
90%_error_hi 1.26e-01 9.12e-02 7.24e-02 1.70e-01 2.09e-01 2.57e-01 ph/cm2/s
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