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 Jan 20 01:37:28 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger312958
======================================================================
Trigger: 00312958 Segment: 000
BAT Trigger Time: 234063030.912 [s; MET]
Trigger Stop: 234063032.96 [s; MET]
UTC: 2008-06-02T01:30:28.077080 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 19.1726774847547 Dec: -9.25077306570324 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.11
Image Trigger?: NO
Rate S/N Ratio: 13.3790881602597 [ if not an image trigger ]
Image S/N Ratio: 8.11
Analysis Position: [ source = BAT ]
RA: 19.1726774847547 Dec: -9.25077306570324 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 19.1738896892608 Dec: -9.23794765140966 [deg; J2000]
{ 01h 16m 41.7s , -09d 14' 16.6" }
+/- 1.67606817425502 [arcmin] (estimated 90% radius based on SNR)
+/- 0.826878743819133 [arcmin] (formal 1-sigma fit error)
SNR: 14.544597081511
Angular difference between the analysis and refined position is 0.772866 arcmin
Partial Coding Fraction: 0.1972656 [ including projection effects ]
Duration
T90: 74.2880000174046 +/- 7.14318726944463
Measured from: -9.75600001215935
to: 64.5320000052452 [s; relative to TRIGTIME]
T50: 58.9760000109673 +/- 1.19843230514097
Measured from: 1.20800000429153
to: 60.1840000152588 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 59.5959999859333
to: 60.5959999859333 [s; relative to TRIGTIME]
Total Fluence
Measured from: -11.4880000054836
to: 69.2439999878407 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.923140 1.512023 1.557406 0.445529
0.103868 0.110691 0.105159 0.101678 [error]
Peak 0.032527 0.110120 0.153191 0.061038
0.007375 0.008660 0.009172 0.008094 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
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====== Table of the duration information =============================
Value tstart tstop
T100 80.732 -11.488 69.244
T90 74.288 -9.756 64.532
T50 58.976 1.208 60.184
Peak 1.000 59.596 60.596
====== 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 -1.277 -0.126 0.127 - - - 4.06e-03 -2.93e-04 2.92e-04 58.360 57
CPL -0.844 -0.476 0.557 149.464 -54.742 -149.464 6.39e-03 -2.44e-03 4.82e-03 56.120 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 -0.700 -0.129 0.134 - - - 2.36e-02 -1.90e-03 1.88e-03 72.470 57
CPL -0.135 -0.526 0.609 201.335 -73.564 5096.515 4.07e-02 -1.57e-02 3.02e-02 69.100 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 3.40e-07 7.16e-07 1.18e-06 4.41e-06 3.26e-06 6.65e-06 erg/cm2
90%_error_low -4.66e-08 -6.02e-08 -1.00e-07 -7.83e-07 -2.52e-07 -8.50e-07 erg/cm2
90%_error_hi 4.88e-08 5.97e-08 9.95e-08 8.93e-07 2.53e-07 9.40e-07 erg/cm2
Peak flux PL 4.55e-01 7.39e-01 9.10e-01 2.21e+00 2.73e+00 4.32e+00 ph/cm2/s
90%_error_low -7.55e-02 -7.81e-02 -6.84e-02 -3.43e-01 -2.08e-01 -3.73e-01 ph/cm2/s
90%_error_hi 8.06e-02 7.75e-02 6.82e-02 3.85e-01 2.09e-01 3.90e-01 ph/cm2/s
Fluence CPL 3.07e-07 7.38e-07 1.23e-06 2.57e-06 3.19e-06 4.85e-06 erg/cm2
90%_error_low -5.86e-08 -6.65e-08 -1.17e-07 -1.11e-06 -2.68e-07 -1.13e-06 erg/cm2
90%_error_hi 6.06e-08 6.77e-08 1.19e-07 1.88e-06 2.67e-07 2.11e-06 erg/cm2
Peak flux CPL 3.84e-01 7.52e-01 9.76e-01 1.33e+00 2.68e+00 3.44e+00 ph/cm2/s
90%_error_low -9.41e-02 -8.42e-02 -9.10e-02 -4.70e-01 -2.13e-01 -5.14e-01 ph/cm2/s
90%_error_hi 1.01e-01 8.43e-02 9.25e-02 8.18e-01 2.13e-01 8.19e-01 ph/cm2/s
======================================================================