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: Thu Apr 14 18:17:21 EDT 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger680655
======================================================================
Trigger: 00680655 Segment: 000
BAT Trigger Time: 480762983.744 [s; MET]
Trigger Stop: 480762984.768 [s; MET]
UTC: 2016-03-27T09:16:07.705440 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 146.689296300309 Dec: 54.0168224464118 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.6
Image Trigger?: NO
Rate S/N Ratio: 12.0830459735946 [ if not an image trigger ]
Image S/N Ratio: 7.6
Analysis Position: [ source = BAT ]
RA: 146.689296300309 Dec: 54.0168224464118 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 146.699034533957 Dec: 54.0165959499338 [deg; J2000]
{ 09h 46m 47.8s , +54d 00' 59.7" }
+/- 0.934814962001397 [arcmin] (estimated 90% radius based on SNR)
+/- 0.306321805393869 [arcmin] (formal 1-sigma fit error)
SNR: 33.4918296158038
Angular difference between the analysis and refined position is 0.343570 arcmin
Partial Coding Fraction: 0.8203125 [ including projection effects ]
Duration
T90: 33.7440000772476 +/- 9.37472005275709
Measured from: -3.31200003623962
to: 30.432000041008 [s; relative to TRIGTIME]
T50: 9.82400000095367 +/- 1.28369467868782
Measured from: 3.08799999952316
to: 12.9120000004768 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 5.283999979496
to: 6.283999979496 [s; relative to TRIGTIME]
Total Fluence
Measured from: -6.36800003051758
to: 42.8479999899864 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.918166 0.911110 0.590095 0.089779
0.040204 0.041843 0.036430 0.032142 [error]
Peak 0.056060 0.084119 0.058107 0.010007
0.006750 0.007279 0.006362 0.004947 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 49.216 -6.368 42.848
T90 33.744 -3.312 30.432
T50 9.824 3.088 12.912
Peak 1.000 5.284 6.284
====== 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 -1.837 -0.107 0.105 - - - 3.01e-03 -1.81e-04 1.79e-04 50.970 57
CPL -1.839 -0.105 0.362 9999.360 -9999.350 -9999.360 3.01e-03 -1.78e-04 1.61e-03 50.970 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 -1.568 -0.170 0.166 - - - 1.33e-02 -1.42e-03 1.40e-03 70.500 57
CPL -1.035 -0.604 0.761 86.667 -27.750 -86.667 2.55e-02 -1.29e-02 3.78e-02 68.550 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 2.60e-07 3.90e-07 4.36e-07 9.25e-07 1.36e-06 2.01e-06 erg/cm2
90%_error_low -2.26e-08 -2.06e-08 -3.66e-08 -1.55e-07 -8.24e-08 -1.88e-07 erg/cm2
90%_error_hi 2.32e-08 2.06e-08 3.67e-08 1.75e-07 8.32e-08 2.04e-07 erg/cm2
Peak flux PL 5.86e-01 5.66e-01 3.82e-01 4.03e-01 1.70e+00 1.94e+00 ph/cm2/s
90%_error_low -9.04e-02 -5.75e-02 -5.17e-02 -9.87e-02 -1.68e-01 -1.96e-01 ph/cm2/s
90%_error_hi 9.38e-02 5.73e-02 5.14e-02 1.16e-01 1.68e-01 1.98e-01 ph/cm2/s
Fluence CPL 2.61e-07 3.88e-07 4.36e-07 9.59e-07 1.37e-06 2.06e-06 erg/cm2
90%_error_low -2.85e-08 -2.00e-08 -3.91e-08 -4.60e-07 -1.07e-07 -4.83e-07 erg/cm2
90%_error_hi 2.39e-08 2.51e-08 4.18e-08 -1.28e-08 4.64e-08 1.48e-07 erg/cm2
Peak flux CPL 5.42e-01 6.01e-01 3.96e-01 2.18e-01 1.67e+00 1.76e+00 ph/cm2/s
90%_error_low -1.06e-01 -7.11e-02 -5.67e-02 -1.15e-01 -1.73e-01 -2.14e-01 ph/cm2/s
90%_error_hi 1.08e-01 7.38e-02 5.79e-02 2.21e-01 1.72e-01 2.85e-01 ph/cm2/s
======================================================================
Special notes of this burst