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: Tue Sep 9 02:01:13 EDT 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger348128
======================================================================
Trigger: 00348128 Segment: 000
BAT Trigger Time: 260236864 [s; MET]
Trigger Stop: 260236928 [s; MET]
UTC: 2009-04-01T00:00:59.378700 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 350.908652961353 Dec: 29.7666028590948 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.41
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 10.41
Analysis Position: [ source = BAT ]
RA: 350.908652961353 Dec: 29.7666028590948 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 350.920731352883 Dec: 29.7630869210671 [deg; J2000]
{ 23h 23m 41.0s , +29d 45' 47.1" }
+/- 0.676069334960927 [arcmin] (estimated 90% radius based on SNR)
+/- 0.210424132759514 [arcmin] (formal 1-sigma fit error)
SNR: 53.209360624473
Angular difference between the analysis and refined position is 0.663522 arcmin
Partial Coding Fraction: 0.3828125 [ including projection effects ]
Duration
T90: 117.004000008106 +/- 14.0428857279561
Measured from: 13.6719999909401
to: 130.675999999046 [s; relative to TRIGTIME]
T50: 25.2199999988079 +/- 0.708316324477986
Measured from: 97.3720000088215
to: 122.592000007629 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 122.048000007868
to: 123.048000007868 [s; relative to TRIGTIME]
Total Fluence
Measured from: -11.9480000138283
to: 165.00799998641 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 4.914235 6.419821 4.985251 1.150727
0.114302 0.120608 0.107088 0.087701 [error]
Peak 0.290805 0.468003 0.402817 0.154919
0.013659 0.016183 0.015599 0.011613 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 176.956 -11.948 165.008
T90 117.004 13.672 130.676
T50 25.220 97.372 122.592
Peak 1.000 122.048 123.048
====== 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 -1.628 -0.047 0.047 - - - 6.76e-03 -1.64e-04 1.64e-04 45.630 57
CPL -1.518 -0.136 0.186 242.675 -117.716 -242.675 7.59e-03 -9.34e-04 1.57e-03 44.540 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 -1.303 -0.071 0.071 - - - 9.17e-02 -3.55e-03 3.55e-03 61.240 57
CPL -1.260 -0.112 0.138 979.910 -979.910 -979.910 9.59e-02 -7.37e-03 5.38e-03 61.870 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 1.72e-06 2.93e-06 3.79e-06 9.90e-06 1.12e-05 1.83e-05 erg/cm2
90%_error_low -8.49e-08 -8.30e-08 -1.15e-07 -6.79e-07 -2.79e-07 -7.39e-07 erg/cm2
90%_error_hi 8.67e-08 8.28e-08 1.15e-07 7.13e-07 2.80e-07 7.64e-07 erg/cm2
Peak flux PL 3.13e+00 3.54e+00 2.87e+00 3.87e+00 1.09e+01 1.34e+01 ph/cm2/s
90%_error_low -2.41e-01 -1.65e-01 -1.30e-01 -3.69e-01 -4.48e-01 -5.30e-01 ph/cm2/s
90%_error_hi 2.48e-01 1.64e-01 1.29e-01 3.92e-01 4.49e-01 5.32e-01 ph/cm2/s
Fluence CPL 1.68e-06 2.95e-06 3.83e-06 8.57e-06 1.11e-05 1.70e-05 erg/cm2
90%_error_low -1.13e-07 -8.70e-08 -1.28e-07 -1.76e-06 -3.10e-07 -1.79e-06 erg/cm2
90%_error_hi 1.13e-07 8.74e-08 1.29e-07 1.76e-06 3.09e-07 1.62e-06 erg/cm2
Peak flux CPL 3.21e+00 3.51e+00 2.83e+00 3.86e+00 1.10e+01 1.39e+01 ph/cm2/s
90%_error_low -3.13e-01 -1.38e-01 N/A N/A -5.26e-01 -1.24e+00 ph/cm2/s
90%_error_hi 1.65e-01 1.90e-01 N/A N/A 3.71e-01 6.60e-03 ph/cm2/s
======================================================================
Special notes of this burst