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: Wed Jan 22 22:02:34 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger118749
======================================================================
Trigger: 00118749 Segment: 000
BAT Trigger Time: 137304018.752 [s; MET]
Trigger Stop: 137304018.88 [s; MET]
UTC: 2005-05-09T04:00:19.237760 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 189.055782430247 Dec: 29.000309642558 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 6
Image Trigger?: NO
Rate S/N Ratio: 9.59166304662544 [ if not an image trigger ]
Image S/N Ratio: 6
Analysis Position: [ source = BAT ]
RA: 189.055782430247 Dec: 29.000309642558 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 189.120476300044 Dec: 29.0014195744892 [deg; J2000]
{ 12h 36m 28.9s , +29d 00' 05.1" }
+/- 2.46718891236298 [arcmin] (estimated 90% radius based on SNR)
+/- 1.43957963061827 [arcmin] (formal 1-sigma fit error)
SNR: 8.37200020885544
Angular difference between the analysis and refined position is 3.395577 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 0.0240000188350677 +/- 0.00894426338008669
Measured from: 0
to: 0.0240000188350677 [s; relative to TRIGTIME]
T50: 0.0120000243186951 +/- 0.00565684464005017
Measured from: 0.00799998641014099
to: 0.0200000107288361 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.483999997377396
to: 0.516000002622604 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 0.0279999971389771 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.002447 0.005965 0.004142 0.002705
0.000937 0.001119 0.001079 0.000721 [error]
Peak 0.003011 0.008137 0.009532 0.003013
0.004477 0.004761 0.003993 0.003298 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 0.028 0.000 0.028
T90 0.024 0.000 0.024
T50 0.012 0.008 0.020
Peak 1.000 -0.484 0.516
====== 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 -1.275 -0.399 0.405 - - - 2.56e-02 -6.59e-03 6.56e-03 55.540 57
CPL 2.192 -2.716 6.743 58.851 -10.600 39.935 1.45e+00 -1.45e+00 1.54e+03 50.450 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 -0.960 -1.005 1.477 - - - 1.66e-03 -1.66e-03 8.45e-04 39.120 57
CPL -0.977 0.977 4.038 9999.350 N/A N/A 1.67e-03 N/A N/A 39.130 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 7.42e-10 1.56e-09 2.58e-09 9.68e-09 7.13e-09 1.46e-08 erg/cm2
90%_error_low -2.92e-10 -4.26e-10 -8.07e-10 -4.99e-09 -2.02e-09 -5.86e-09 erg/cm2
90%_error_hi 3.20e-10 4.20e-10 8.04e-10 7.71e-09 2.07e-09 8.13e-09 erg/cm2
Peak flux PL 4.08e-02 5.66e-02 5.82e-02 1.09e-01 1.90e-01 2.65e-01 ph/cm2/s
90%_error_low -4.08e-02 -5.66e-02 -5.82e-02 -1.09e-01 -1.90e-01 -1.36e-01 ph/cm2/s
90%_error_hi 5.49e-02 3.72e-02 3.03e-02 7.82e-01 1.01e-01 2.10e-01 ph/cm2/s
Fluence CPL 3.89e-10 2.16e-09 2.88e-09 4.55e-10 5.85e-09 5.88e-09 erg/cm2
90%_error_low -3.20e-10 -6.55e-10 -1.01e-09 -4.24e-10 -1.62e-09 -1.65e-09 erg/cm2
90%_error_hi 4.23e-10 7.04e-10 1.01e-09 3.18e-09 2.01e-09 3.24e-09 erg/cm2
Peak flux CPL 4.52e-02 5.73e-02 5.74e-02 1.11e-01 1.93e-01 2.66e-01 ph/cm2/s
90%_error_low N/A -5.73e-02 N/A N/A -1.93e-01 -1.66e-01 ph/cm2/s
90%_error_hi N/A 1.97e-02 N/A N/A 1.13e-01 2.04e-01 ph/cm2/s
======================================================================
Special notes of this burst