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 Mar 17 23:08:15 EDT 2019
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger879909
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Trigger: 00879909 Segment: 000
BAT Trigger Time: 567658419.776 [s; MET]
Trigger Stop: 567658420.8 [s; MET]
UTC: 2018-12-28T02:53:17.622120 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 49.8308137189391 Dec: 13.1949402078414 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 15.47
Image Trigger?: NO
Rate S/N Ratio: 53.7494186015068 [ if not an image trigger ]
Image S/N Ratio: 15.47
Analysis Position: [ source = BAT ]
RA: 49.8308137189391 Dec: 13.1949402078414 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 49.8313521505304 Dec: 13.2108052618726 [deg; J2000]
{ 03h 19m 19.5s , +13d 12' 38.9" }
+/- 0.759844524461702 [arcmin] (estimated 90% radius based on SNR)
+/- 0.190693863516596 [arcmin] (formal 1-sigma fit error)
SNR: 45.0310020392225
Angular difference between the analysis and refined position is 0.952423 arcmin
Partial Coding Fraction: 0.3046875 [ including projection effects ]
Duration
T90: 255.152000069618 +/- 138.024949557979
Measured from: -0.960000038146973
to: 254.192000031471 [s; relative to TRIGTIME]
T50: 10.5759999752045 +/- 0.593942789707118
Measured from: 3.53600001335144
to: 14.1119999885559 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 13.0759999752045
to: 14.0759999752045 [s; relative to TRIGTIME]
Total Fluence
Measured from: -3.98399996757507
to: 337.93599998951 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.913467 5.830245 4.647274 1.254401
0.133443 0.142740 0.130047 0.114840 [error]
Peak 0.252733 0.380318 0.412520 0.140043
0.017857 0.020389 0.021435 0.016227 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 341.920 -3.984 337.936
T90 255.152 -0.960 254.192
T50 10.576 3.536 14.112
Peak 1.000 13.076 14.076
====== 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 -1.442 -0.056 0.056 - - - 3.17e-03 -9.36e-05 9.36e-05 52.690 57
CPL -1.241 -0.213 0.227 205.684 -80.573 -205.684 3.92e-03 -7.74e-04 1.04e-03 50.150 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: N/A)
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 -1.129 -0.099 0.100 - - - 8.14e-02 -4.43e-03 4.43e-03 44.590 57
CPL -1.079 -0.146 0.219 975.832 -975.832 -975.832 8.61e-02 -8.72e-03 8.07e-03 45.020 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 1.31e-06 2.49e-06 3.67e-06 1.16e-05 1.04e-05 1.90e-05 erg/cm2
90%_error_low -7.67e-08 -8.53e-08 -1.34e-07 -9.45e-07 -3.28e-07 -1.02e-06 erg/cm2
90%_error_hi 7.85e-08 8.50e-08 1.34e-07 1.00e-06 3.29e-07 1.07e-06 erg/cm2
Peak flux PL 6.62e-04 9.54e-03 8.80e-02 9.59e+00 3.92e-01 9.60e+00 ph/cm2/s
90%_error_low N/A -3.97e-04 N/A -5.67e-01 N/A -4.74e-01 ph/cm2/s
90%_error_hi N/A 1.19e-03 N/A 6.12e-01 N/A 7.34e-01 ph/cm2/s
Fluence CPL 1.25e-06 2.52e-06 3.73e-06 8.78e-06 1.02e-05 1.63e-05 erg/cm2
90%_error_low -9.81e-08 -9.24e-08 -1.49e-07 -2.18e-06 -3.65e-07 -2.19e-06 erg/cm2
90%_error_hi 1.00e-07 9.32e-08 1.50e-07 3.03e-06 3.63e-07 2.76e-06 erg/cm2
Peak flux CPL 2.35e+00 2.94e+00 2.68e+00 4.28e+00 9.53e+00 1.28e+01 ph/cm2/s
90%_error_low N/A N/A N/A N/A -5.91e-01 -1.69e+00 ph/cm2/s
90%_error_hi N/A N/A N/A N/A 4.67e-01 2.08e-01 ph/cm2/s
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