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: Mon Jul 15 18:45:52 EDT 2019
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger908288
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Trigger: 00908288 Segment: 000
BAT Trigger Time: 582091661.376 [s; MET]
Trigger Stop: 582091677.76 [s; MET]
UTC: 2019-06-13T04:07:18.310160 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 182.558815925826 Dec: 67.2327743021234 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.12
Image Trigger?: NO
Rate S/N Ratio: 13.4164078649987 [ if not an image trigger ]
Image S/N Ratio: 7.12
Analysis Position: [ source = BAT ]
RA: 182.558815925826 Dec: 67.2327743021234 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 182.552200555028 Dec: 67.2443496621523 [deg; J2000]
{ 12h 10m 12.5s , +67d 14' 39.7" }
+/- 2.21309937067005 [arcmin] (estimated 90% radius based on SNR)
+/- 1.1220717430642 [arcmin] (formal 1-sigma fit error)
SNR: 9.77822284193032
Angular difference between the analysis and refined position is 0.711297 arcmin
Partial Coding Fraction: 0.09667969 [ including projection effects ]
Duration
T90: 17.6319999694824 +/- 3.11392230173736
Measured from: 1.74399995803833
to: 19.3759999275208 [s; relative to TRIGTIME]
T50: 9.12000000476837 +/- 2.72512455032588
Measured from: 5.2960000038147
to: 14.4160000085831 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 6.88399994373322
to: 7.88399994373322 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0.623999953269958
to: 20.3199999332428 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.544444 0.796054 0.882720 0.361634
0.141762 0.118954 0.107718 0.090518 [error]
Peak 0.104727 0.045834 0.074682 0.065429
0.030756 0.025742 0.025136 0.020389 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 19.696 0.624 20.320
T90 17.632 1.744 19.376
T50 9.120 5.296 14.416
Peak 1.000 6.884 7.884
====== 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 -1.218 -0.258 0.268 - - - 8.58e-03 -1.25e-03 1.24e-03 54.440 57
CPL -1.013 -2.120 1.012 275.943 -275.943 -275.943 1.06e-02 -3.05e-03 1.71e-02 54.440 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 -2.519 -0.890 0.630 - - - 7.60e-03 -7.60e-03 3.64e-03 76.620 57
CPL -1.754 N/A N/A 15.777 N/A N/A 1.96e-02 N/A N/A 76.430 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 1.66e-07 3.62e-07 6.23e-07 2.48e-06 1.71e-06 3.63e-06 erg/cm2
90%_error_low -4.79e-08 -6.62e-08 -9.88e-08 -8.00e-07 -2.52e-07 -8.57e-07 erg/cm2
90%_error_hi 5.36e-08 6.47e-08 9.74e-08 1.04e-06 2.52e-07 1.06e-06 erg/cm2
Peak flux PL 8.42e-01 4.67e-01 1.63e-01 7.43e-02 1.51e+00 1.55e+00 ph/cm2/s
90%_error_low -4.42e-01 -1.92e-01 -1.02e-01 -7.43e-02 -6.52e-01 -6.54e-01 ph/cm2/s
90%_error_hi 4.87e-01 1.92e-01 9.83e-02 1.02e-01 6.56e-01 6.58e-01 ph/cm2/s
Fluence CPL 9.94e-08 1.35e-07 1.41e-07 3.38e-07 4.65e-07 7.39e-07 erg/cm2
90%_error_low N/A -1.10e-07 N/A -2.76e-07 N/A N/A erg/cm2
90%_error_hi N/A 5.93e-08 N/A 1.85e-07 N/A N/A erg/cm2
Peak flux CPL 7.65e-01 5.21e-01 1.82e-01 4.19e-02 1.50e+00 1.51e+00 ph/cm2/s
90%_error_low N/A N/A N/A -4.19e-02 -6.54e-01 -6.63e-01 ph/cm2/s
90%_error_hi N/A N/A N/A 1.35e-01 6.51e-01 6.45e-01 ph/cm2/s
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