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 18:57:10 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger341504
======================================================================
Trigger: 00341504 Segment: 000
BAT Trigger Time: 254956039.744 [s; MET]
Trigger Stop: 254956040 [s; MET]
UTC: 2009-01-29T21:07:15.287600 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 269.091866815445 Dec: -32.8258331356111 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 11.36
Image Trigger?: NO
Rate S/N Ratio: 24.1246761636296 [ if not an image trigger ]
Image S/N Ratio: 11.36
Analysis Position: [ source = BAT ]
RA: 269.091866815445 Dec: -32.8258331356111 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 269.105558815306 Dec: -32.7923594392183 [deg; J2000]
{ 17h 56m 25.3s , -32d 47' 32.5" }
+/- 0.679220234842424 [arcmin] (estimated 90% radius based on SNR)
+/- 0.252632377131203 [arcmin] (formal 1-sigma fit error)
SNR: 52.857085747433
Angular difference between the analysis and refined position is 2.123796 arcmin
Partial Coding Fraction: 0.890625 [ including projection effects ]
Duration
T90: 17.6240000128746 +/- 2.62417682817886
Measured from: 0.395999997854233
to: 18.0200000107288 [s; relative to TRIGTIME]
T50: 7.03999999165535 +/- 0.440218143582139
Measured from: 2.10000002384186
to: 9.14000001549721 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.00400000810623
to: 2.00400000810623 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.211999982595444
to: 26.7199999988079 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.334372 1.554283 0.905741 0.140244
0.036348 0.034906 0.029977 0.025901 [error]
Peak 0.116618 0.186738 0.130909 0.034123
0.007875 0.008361 0.007485 0.005921 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 26.932 -0.212 26.720
T90 17.624 0.396 18.020
T50 7.040 2.100 9.140
Peak 1.000 1.004 2.004
====== 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 -1.824 -0.063 0.062 - - - 8.91e-03 -2.86e-04 2.85e-04 46.180 57
CPL -1.598 -0.239 0.255 88.020 -23.340 -88.020 1.15e-02 -2.69e-03 3.80e-03 43.600 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 -1.434 -0.097 0.096 - - - 3.06e-02 -1.67e-03 1.66e-03 52.110 57
CPL -1.088 -0.373 0.406 134.236 -47.242 -134.236 4.54e-02 -1.52e-02 2.59e-02 49.580 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 4.16e-07 6.27e-07 7.09e-07 1.52e-06 2.21e-06 3.27e-06 erg/cm2
90%_error_low -2.36e-08 -2.03e-08 -3.14e-08 -1.45e-07 -7.18e-08 -1.67e-07 erg/cm2
90%_error_hi 2.42e-08 2.03e-08 3.14e-08 1.55e-07 7.20e-08 1.75e-07 erg/cm2
Peak flux PL 1.18e+00 1.24e+00 9.16e-01 1.09e+00 3.76e+00 4.43e+00 ph/cm2/s
90%_error_low -1.13e-01 -7.25e-02 -6.25e-02 -1.49e-01 -2.05e-01 -2.42e-01 ph/cm2/s
90%_error_hi 1.17e-01 7.22e-02 6.22e-02 1.64e-01 2.05e-01 2.43e-01 ph/cm2/s
Fluence CPL N/A N/A N/A N/A N/A N/A erg/cm2
90%_error_low -2.36e-08 -2.03e-08 -3.14e-08 -1.45e-07 -7.18e-08 -1.67e-07 erg/cm2
90%_error_hi 2.42e-08 2.03e-08 3.14e-08 1.55e-07 7.20e-08 1.75e-07 erg/cm2
Peak flux CPL 1.10e+00 1.27e+00 9.41e-01 7.37e-01 3.69e+00 4.06e+00 ph/cm2/s
90%_error_low -1.38e-01 -8.23e-02 -6.89e-02 -2.48e-01 -2.18e-01 -3.43e-01 ph/cm2/s
90%_error_hi 1.41e-01 8.37e-02 6.99e-02 3.72e-01 2.17e-01 4.47e-01 ph/cm2/s
======================================================================
Special notes of this burst