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: Wed May 30 15:52:41 EDT 2018
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger820513
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Trigger: 00820513 Segment: 000
BAT Trigger Time: 544203540.032 [s; MET]
Trigger Stop: 544203542.08 [s; MET]
UTC: 2018-03-31T15:38:39.320160 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 196.819900496289 Dec: 61.7250399854159 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.48
Image Trigger?: NO
Rate S/N Ratio: 21.6794833886788 [ if not an image trigger ]
Image S/N Ratio: 9.48
Analysis Position: [ source = BAT ]
RA: 196.819900496289 Dec: 61.7250399854159 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 196.799942170466 Dec: 61.7253167959102 [deg; J2000]
{ 13h 07m 12.0s , +61d 43' 31.1" }
+/- 1.68461575624069 [arcmin] (estimated 90% radius based on SNR)
+/- 0.532222162632814 [arcmin] (formal 1-sigma fit error)
SNR: 14.4392862205162
Angular difference between the analysis and refined position is 0.567500 arcmin
Partial Coding Fraction: 0.3046875 [ including projection effects ]
Duration
T90: 78.0320000648499 +/- 4.7389450045999
Measured from: -20.1679999828339
to: 57.864000082016 [s; relative to TRIGTIME]
T50: 20.432000041008 +/- 7.35756471371748
Measured from: -13.3679999113083
to: 7.06400012969971 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.98800003528595
to: 1.98800003528595 [s; relative to TRIGTIME]
Total Fluence
Measured from: -21.3839999437332
to: 62.4240000247955 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.361262 1.236563 0.520607 0.070868
0.089865 0.092563 0.079495 0.068487 [error]
Peak 0.121067 0.128716 0.065386 0.003289
0.012308 0.012621 0.010284 0.007660 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 83.808 -21.384 62.424
T90 78.032 -20.168 57.864
T50 20.432 -13.368 7.064
Peak 1.000 0.988 1.988
====== 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 -2.265 -0.185 0.174 - - - 2.07e-03 -2.57e-04 2.52e-04 41.560 57
CPL -1.916 -0.086 0.816 9.531 -7.961 30.885 3.34e-03 N/A N/A 40.860 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 -2.058 -0.203 0.190 - - - 1.84e-02 -2.57e-03 2.52e-03 67.840 57
CPL -0.969 -0.894 1.192 38.850 -18.437 13.386 7.99e-02 -7.99e-02 3.35e-01 63.520 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 4.58e-07 5.30e-07 4.41e-07 6.18e-07 1.65e-06 2.05e-06 erg/cm2
90%_error_low -5.41e-08 -4.72e-08 -7.40e-08 -1.81e-07 -1.68e-07 -2.78e-07 erg/cm2
90%_error_hi 5.52e-08 4.69e-08 7.63e-08 2.27e-07 1.72e-07 3.11e-07 erg/cm2
Peak flux PL 1.30e+00 9.39e-01 4.51e-01 3.06e-01 2.83e+00 2.99e+00 ph/cm2/s
90%_error_low -1.98e-01 -1.05e-01 -8.06e-02 -9.19e-02 -3.19e-01 -3.36e-01 ph/cm2/s
90%_error_hi 2.04e-01 1.05e-01 8.14e-02 1.12e-01 3.19e-01 3.36e-01 ph/cm2/s
Fluence CPL N/A N/A N/A N/A N/A N/A erg/cm2
90%_error_low -5.41e-08 -4.72e-08 -7.40e-08 -1.81e-07 -1.68e-07 -2.78e-07 erg/cm2
90%_error_hi 5.52e-08 4.69e-08 7.63e-08 2.27e-07 1.72e-07 3.11e-07 erg/cm2
Peak flux CPL 1.18e+00 1.07e+00 4.41e-01 8.37e-02 2.76e+00 2.77e+00 ph/cm2/s
90%_error_low -2.27e-01 -1.51e-01 -1.06e-01 -8.37e-02 -3.25e-01 -3.34e-01 ph/cm2/s
90%_error_hi 2.28e-01 1.58e-01 9.73e-02 1.62e-01 3.25e-01 3.43e-01 ph/cm2/s
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