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: Sat Jan 20 04:57:06 EST 2018
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger790053
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Trigger: 00790053 Segment: 000
BAT Trigger Time: 532464700.864 [s; MET]
Trigger Stop: 532464702.912 [s; MET]
UTC: 2017-11-15T18:51:20.858340 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 278.412563701263 Dec: 9.12838471438907 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.59
Image Trigger?: NO
Rate S/N Ratio: 8.83176086632785 [ if not an image trigger ]
Image S/N Ratio: 7.59
Analysis Position: [ source = BAT ]
RA: 278.412563701263 Dec: 9.12838471438907 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 278.391772564459 Dec: 9.11771088638416 [deg; J2000]
{ 18h 33m 34.0s , +09d 07' 03.8" }
+/- 1.52951440585242 [arcmin] (estimated 90% radius based on SNR)
+/- 0.67945946282575 [arcmin] (formal 1-sigma fit error)
SNR: 16.5756443668173
Angular difference between the analysis and refined position is 1.388238 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 36.7719999551773 +/- 5.18024129206609
Measured from: -6.30000001192093
to: 30.4719999432564 [s; relative to TRIGTIME]
T50: 19.6519999504089 +/- 3.96798791377569
Measured from: -1.91200000047684
to: 17.7399999499321 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -2.32400000095367
to: -1.32400000095367 [s; relative to TRIGTIME]
Total Fluence
Measured from: -7.37999999523163
to: 32.3319999575615 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.426202 0.449640 0.273522 0.062766
0.039964 0.038821 0.032961 0.028387 [error]
Peak 0.027859 0.020678 0.023122 0.006521
0.006384 0.006301 0.005567 0.004688 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 39.712 -7.380 32.332
T90 36.772 -6.300 30.472
T50 19.652 -1.912 17.740
Peak 1.000 -2.324 -1.324
====== 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 -1.722 -0.187 0.183 - - - 1.82e-03 -1.95e-04 1.91e-04 51.470 57
CPL -1.730 -0.179 0.209 9999.360 -9999.350 -9999.360 1.82e-03 -1.33e-03 1.03e-03 51.490 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 -1.781 -0.549 0.485 - - - 4.24e-03 -1.36e-03 1.25e-03 52.860 57
CPL -2.148 -0.062 1.805 58.964 N/A N/A 2.79e-03 N/A N/A 52.800 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 1.14e-07 1.83e-07 2.22e-07 5.27e-07 6.69e-07 1.05e-06 erg/cm2
90%_error_low -1.74e-08 -1.73e-08 -3.28e-08 -1.48e-07 -7.45e-08 -1.80e-07 erg/cm2
90%_error_hi 1.80e-08 1.73e-08 3.29e-08 1.84e-07 7.58e-08 2.09e-07 erg/cm2
Peak flux PL 2.29e-01 1.95e-01 1.13e-01 9.85e-02 5.80e-01 6.35e-01 ph/cm2/s
90%_error_low -8.52e-02 -4.82e-02 -4.66e-02 -6.18e-02 -1.43e-01 -1.61e-01 ph/cm2/s
90%_error_hi 9.21e-02 4.82e-02 4.67e-02 1.04e-01 1.43e-01 1.65e-01 ph/cm2/s
Fluence CPL 1.16e-07 1.80e-07 1.61e-07 5.26e-07 6.76e-07 1.04e-06 erg/cm2
90%_error_low -2.56e-08 -2.14e-08 -2.93e-08 N/A -8.11e-08 -2.75e-07 erg/cm2
90%_error_hi 2.27e-08 2.86e-08 2.66e-08 N/A 6.92e-08 1.99e-07 erg/cm2
Peak flux CPL 2.33e-01 1.94e-01 1.12e-01 1.10e-01 5.81e-01 6.37e-01 ph/cm2/s
90%_error_low -9.29e-02 -4.72e-02 N/A N/A -1.44e-01 -1.75e-01 ph/cm2/s
90%_error_hi 9.13e-02 5.41e-02 N/A N/A 1.43e-01 1.60e-01 ph/cm2/s
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