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.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Sun Jan 19 20:44:08 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger334877
======================================================================
Trigger: 00334877 Segment: 000
BAT Trigger Time: 248713000 [s; MET]
Trigger Stop: 248713064 [s; MET]
UTC: 2008-11-18T14:56:36.734580 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 82.5899853305401 Dec: -43.3021771582674 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 15.02
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 15.02
Analysis Position: [ source = BAT ]
RA: 82.5899853305401 Dec: -43.3021771582674 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 82.5739099751729 Dec: -43.3094158966532 [deg; J2000]
{ 05h 30m 17.7s , -43d 18' 33.9" }
+/- 1.61666343453725 [arcmin] (estimated 90% radius based on SNR)
+/- 0.735616264411771 [arcmin] (formal 1-sigma fit error)
SNR: 15.3140604712617
Angular difference between the analysis and refined position is 0.825397 arcmin
Partial Coding Fraction: 0.6171875 [ including projection effects ]
Duration
T90: 53.4040000140667 +/- 12.085376963383
Measured from: 20.2800000011921
to: 73.6840000152588 [s; relative to TRIGTIME]
T50: 24.8880000114441 +/- 4.24902435662589
Measured from: 34.5439999997616
to: 59.4320000112057 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 46.944000005722
to: 47.944000005722 [s; relative to TRIGTIME]
Total Fluence
Measured from: 9.88400000333786
to: 79.83599999547 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.840526 0.809253 0.405292 0.046183
0.054402 0.056684 0.050249 0.044786 [error]
Peak 0.023592 0.023637 0.018719 0.007354
0.006522 0.006816 0.006084 0.005509 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 69.952 9.884 79.836
T90 53.404 20.280 73.684
T50 24.888 34.544 59.432
Peak 1.000 46.944 47.944
====== 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 -2.108 -0.158 0.151 - - - 1.81e-03 -1.85e-04 1.82e-04 62.270 57
CPL -1.731 -0.382 0.670 29.680 -27.905 39.758 2.98e-03 -1.76e-03 4.25e-03 61.060 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 -1.617 -0.513 0.484 - - - 4.68e-03 -1.41e-03 1.36e-03 63.440 57
CPL -1.198 -1.126 2.685 91.942 -91.942 -91.942 7.78e-03 -7.78e-03 1.58e-01 63.300 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 2.87e-07 3.65e-07 3.39e-07 5.52e-07 1.18e-06 1.54e-06 erg/cm2
90%_error_low -3.20e-08 -2.86e-08 -4.73e-08 -1.39e-07 -1.08e-07 -1.96e-07 erg/cm2
90%_error_hi 3.27e-08 2.86e-08 4.82e-08 1.68e-07 1.09e-07 2.17e-07 erg/cm2
Peak flux PL 2.16e-01 2.03e-01 1.32e-01 1.33e-01 6.05e-01 6.83e-01 ph/cm2/s
90%_error_low -9.10e-02 -5.82e-02 -5.00e-02 -7.87e-02 -1.69e-01 -1.90e-01 ph/cm2/s
90%_error_hi 1.01e-01 5.74e-02 4.92e-02 1.26e-01 1.69e-01 1.92e-01 ph/cm2/s
Fluence CPL 2.77e-07 3.81e-07 3.32e-07 2.81e-07 1.13e-06 1.27e-06 erg/cm2
90%_error_low -3.59e-08 -3.63e-08 -5.40e-08 -1.76e-07 -1.25e-07 -2.25e-07 erg/cm2
90%_error_hi 3.54e-08 3.85e-08 5.17e-08 4.62e-07 1.28e-07 4.87e-07 erg/cm2
Peak flux CPL 2.02e-01 2.12e-01 1.36e-01 8.13e-02 5.96e-01 6.31e-01 ph/cm2/s
90%_error_low -2.02e-01 -6.60e-02 -5.25e-02 -8.13e-02 -1.76e-01 -2.06e-01 ph/cm2/s
90%_error_hi 1.12e-01 7.48e-02 5.72e-02 8.77e-02 1.74e-01 2.32e-01 ph/cm2/s
======================================================================
Special notes of this burst