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: Tue Sep 29 19:50:03 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger653978
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Trigger: 00653978 Segment: 000
BAT Trigger Time: 462752382.336 [s; MET]
Trigger Stop: 462752383.36 [s; MET]
UTC: 2015-08-31T22:19:27.264720 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 271.021331292747 Dec: -27.2521426009604 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.54
Image Trigger?: NO
Rate S/N Ratio: 16.1864140562386 [ if not an image trigger ]
Image S/N Ratio: 8.54
Analysis Position: [ source = BAT ]
RA: 271.021331292747 Dec: -27.2521426009604 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 271.03017980431 Dec: -27.2427473337378 [deg; J2000]
{ 18h 04m 07.2s , -27d 14' 33.9" }
+/- 1.97131546118086 [arcmin] (estimated 90% radius based on SNR)
+/- 0.815612591481984 [arcmin] (formal 1-sigma fit error)
SNR: 11.5355471047656
Angular difference between the analysis and refined position is 0.735227 arcmin
Partial Coding Fraction: 0.0703125 [ including projection effects ]
Duration
T90: 6.17600005865097 +/- 1.03296077403421
Measured from: -0.312000036239624
to: 5.86400002241135 [s; relative to TRIGTIME]
T50: 3.19999998807907 +/- 0.64358994665835
Measured from: 0.407999992370605
to: 3.60799998044968 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.148000001907349
to: 0.851999998092651 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.584000051021576
to: 6.83999997377396 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.590347 0.865227 0.501651 0.168897
0.079573 0.085273 0.075234 0.063659 [error]
Peak 0.153124 0.232506 0.203464 0.051326
0.033079 0.037622 0.033763 0.025535 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 7.424 -0.584 6.840
T90 6.176 -0.312 5.864
T50 3.200 0.408 3.608
Peak 1.000 -0.148 0.852
====== 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 -1.898 -0.200 0.191 - - - 2.03e-02 -2.60e-03 2.57e-03 65.920 57
CPL -0.522 -0.982 1.343 50.740 -9.185 18.078 1.08e-01 -1.08e-01 4.54e-01 59.690 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 -1.899 -0.281 0.258 - - - 4.13e-02 -7.82e-03 7.70e-03 78.440 57
CPL -0.563 -1.083 1.351 58.724 -8.235 30.800 1.82e-01 -1.82e-01 5.80e-01 73.860 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 2.79e-07 4.03e-07 4.33e-07 8.65e-07 1.38e-06 1.98e-06 erg/cm2
90%_error_low -4.88e-08 -4.79e-08 -7.19e-08 -2.58e-07 -1.75e-07 -3.40e-07 erg/cm2
90%_error_hi 5.10e-08 4.79e-08 7.16e-08 3.14e-07 1.76e-07 3.78e-07 erg/cm2
Peak flux PL 2.50e+00 1.99e+00 1.07e+00 8.33e-01 5.93e+00 6.38e+00 ph/cm2/s
90%_error_low -6.30e-01 -3.60e-01 -2.46e-01 -3.16e-01 -1.08e+00 -1.13e+00 ph/cm2/s
90%_error_hi 6.74e-01 3.58e-01 2.41e-01 3.85e-01 1.09e+00 1.13e+00 ph/cm2/s
Fluence CPL 2.29e-07 4.67e-07 4.56e-07 1.90e-07 1.29e-06 1.34e-06 erg/cm2
90%_error_low -5.96e-08 -6.59e-08 -9.08e-08 -1.31e-07 -1.89e-07 -2.29e-07 erg/cm2
90%_error_hi 6.11e-08 7.00e-08 8.72e-08 3.34e-07 1.91e-07 3.57e-07 erg/cm2
Peak flux CPL N/A N/A N/A N/A N/A N/A ph/cm2/s
90%_error_low -6.30e-01 -3.60e-01 -2.46e-01 -3.16e-01 -1.08e+00 -1.13e+00 ph/cm2/s
90%_error_hi 6.74e-01 3.58e-01 2.41e-01 3.85e-01 1.09e+00 1.13e+00 ph/cm2/s
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