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 15:59:15 EDT 2018
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger819490
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Trigger: 00819490 Segment: 000
BAT Trigger Time: 544025324.672 [s; MET]
Trigger Stop: 544025328.768 [s; MET]
UTC: 2018-03-29T14:08:23.970940 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 82.9163701340642 Dec: -23.7077603611066 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 6.87
Image Trigger?: NO
Rate S/N Ratio: 10.9087121146357 [ if not an image trigger ]
Image S/N Ratio: 6.87
Analysis Position: [ source = BAT ]
RA: 82.9163701340642 Dec: -23.7077603611066 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 82.9050662305339 Dec: -23.6948034233854 [deg; J2000]
{ 05h 31m 37.2s , -23d 41' 41.3" }
+/- 1.76319016577187 [arcmin] (estimated 90% radius based on SNR)
+/- 0.830056747870182 [arcmin] (formal 1-sigma fit error)
SNR: 13.5288986841124
Angular difference between the analysis and refined position is 0.995013 arcmin
Partial Coding Fraction: 0.15625 [ including projection effects ]
Duration
T90: 213.536000013351 +/- 49.4225729811666
Measured from: -5.59200000762939
to: 207.944000005722 [s; relative to TRIGTIME]
T50: 144.111999988556 +/- 3.45922998158195
Measured from: 4.50399994850159
to: 148.615999937057 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.56399989128113
to: 2.56399989128113 [s; relative to TRIGTIME]
Total Fluence
Measured from: -9.91200006008148
to: 257.159999966621 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.015813 2.559963 1.466491 -0.003475
0.144241 0.149383 0.127417 0.107463 [error]
Peak 0.063057 0.051293 0.061948 0.014496
0.016552 0.017991 0.015675 0.011478 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 267.072 -9.912 257.160
T90 213.536 -5.592 207.944
T50 144.112 4.504 148.616
Peak 1.000 1.564 2.564
====== 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 -1.877 -0.126 0.123 - - - 1.41e-03 -1.15e-04 1.14e-04 65.310 57
CPL -0.897 -0.530 0.601 50.135 -7.291 12.133 4.89e-03 -2.35e-03 5.50e-03 54.310 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 -1.912 -0.637 0.522 - - - 9.88e-03 -3.93e-03 3.56e-03 58.840 57
CPL -1.888 -0.966 1.721 212.647 N/A N/A 1.02e-02 N/A N/A 58.850 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 6.88e-07 1.01e-06 1.09e-06 2.23e-06 3.47e-06 5.02e-06 erg/cm2
90%_error_low -7.09e-08 -7.07e-08 -1.19e-07 -4.52e-07 -2.80e-07 -5.84e-07 erg/cm2
90%_error_hi 7.26e-08 7.08e-08 1.20e-07 5.21e-07 2.83e-07 6.35e-07 erg/cm2
Peak flux PL 6.05e-01 4.78e-01 2.54e-01 1.96e-01 1.43e+00 1.53e+00 ph/cm2/s
90%_error_low -2.47e-01 -1.43e-01 -1.25e-01 -1.37e-01 -4.25e-01 -4.65e-01 ph/cm2/s
90%_error_hi 2.62e-01 1.43e-01 1.23e-01 2.32e-01 4.25e-01 4.69e-01 ph/cm2/s
Fluence CPL 6.13e-07 1.12e-06 1.09e-06 5.84e-07 3.21e-06 3.41e-06 erg/cm2
90%_error_low -8.26e-08 -9.33e-08 -1.40e-07 -2.82e-07 -2.98e-07 -4.13e-07 erg/cm2
90%_error_hi 8.32e-08 9.55e-08 1.37e-07 5.47e-07 3.07e-07 6.06e-07 erg/cm2
Peak flux CPL 6.22e-01 4.69e-01 2.50e-01 2.10e-01 1.42e+00 1.53e+00 ph/cm2/s
90%_error_low N/A -2.31e-01 -1.20e-01 -1.33e-01 -6.99e-01 -4.66e-01 ph/cm2/s
90%_error_hi N/A 1.82e-01 7.11e-02 5.72e-02 4.29e-01 4.63e-01 ph/cm2/s
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