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: Sun May 17 01:39:14 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger639278
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Trigger: 00639278 Segment: 000
BAT Trigger Time: 451883537.024 [s; MET]
Trigger Stop: 451883539.072 [s; MET]
UTC: 2015-04-28T03:12:03.518520 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 292.654499855063 Dec: 4.11579888955815 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.45
Image Trigger?: NO
Rate S/N Ratio: 10.2469507659596 [ if not an image trigger ]
Image S/N Ratio: 7.45
Analysis Position: [ source = BAT ]
RA: 292.654499855063 Dec: 4.11579888955815 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 292.662067235886 Dec: 4.11398149747663 [deg; J2000]
{ 19h 30m 38.9s , +04d 06' 50.3" }
+/- 1.30434080093989 [arcmin] (estimated 90% radius based on SNR)
+/- 0.542734138432509 [arcmin] (formal 1-sigma fit error)
SNR: 20.810091058089
Angular difference between the analysis and refined position is 0.465815 arcmin
Partial Coding Fraction: 0.4023438 [ including projection effects ]
Duration
T90: 130.947999954224 +/- 15.5505195049043
Measured from: -34.4679999947548
to: 96.4799999594688 [s; relative to TRIGTIME]
T50: 65.3439999222755 +/- 4.03605998704794
Measured from: 0.948000013828278
to: 66.2919999361038 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.36000001430511
to: 2.36000001430511 [s; relative to TRIGTIME]
Total Fluence
Measured from: -40.0600000023842
to: 121.744000017643 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.863345 2.553690 1.550793 0.318924
0.129963 0.118215 0.096920 0.078396 [error]
Peak 0.029061 0.073378 0.054437 0.019138
0.012712 0.012299 0.010221 0.007633 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 161.804 -40.060 121.744
T90 130.948 -34.468 96.480
T50 65.344 0.948 66.292
Peak 1.000 1.360 2.360
====== 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 -1.808 -0.099 0.098 - - - 2.56e-03 -1.51e-04 1.51e-04 48.990 57
CPL -0.965 -0.440 0.492 58.295 -7.751 15.447 7.03e-03 -2.84e-03 5.55e-03 37.310 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 -1.393 -0.314 0.321 - - - 1.23e-02 -2.42e-03 2.41e-03 55.760 57
CPL -0.120 -1.304 1.830 81.244 -23.839 3168.746 4.76e-02 -4.76e-02 2.81e-01 52.990 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 7.06e-07 1.08e-06 1.23e-06 2.68e-06 3.81e-06 5.69e-06 erg/cm2
90%_error_low -6.45e-08 -6.20e-08 -9.53e-08 -4.11e-07 -2.28e-07 -4.99e-07 erg/cm2
90%_error_hi 6.63e-08 6.19e-08 9.54e-08 4.57e-07 2.29e-07 5.32e-07 erg/cm2
Peak flux PL 4.57e-01 4.90e-01 3.73e-01 4.63e-01 1.50e+00 1.78e+00 ph/cm2/s
90%_error_low -1.57e-01 -1.15e-01 -8.10e-02 -1.75e-01 -3.16e-01 -3.49e-01 ph/cm2/s
90%_error_hi 1.78e-01 1.13e-01 8.00e-02 2.27e-01 3.20e-01 3.49e-01 ph/cm2/s
Fluence CPL 6.19e-07 1.17e-06 1.26e-06 8.92e-07 3.57e-06 3.93e-06 erg/cm2
90%_error_low -7.74e-08 -7.80e-08 -1.08e-07 -3.55e-07 -2.56e-07 -4.38e-07 erg/cm2
90%_error_hi 7.87e-08 7.96e-08 1.07e-07 6.18e-07 2.58e-07 6.51e-07 erg/cm2
Peak flux CPL 3.36e-01 5.27e-01 4.26e-01 1.79e-01 1.42e+00 1.47e+00 ph/cm2/s
90%_error_low -1.72e-01 -1.34e-01 -9.96e-02 -1.79e-01 -3.20e-01 -3.51e-01 ph/cm2/s
90%_error_hi 2.09e-01 1.38e-01 1.03e-01 3.16e-01 3.28e-01 4.20e-01 ph/cm2/s
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