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 v2.48
Process Start Time: Fri Nov 15 20:04:07 EST 2024
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1252402
======================================================================
Trigger: 01252402 Segment: 000
BAT Trigger Time: 747158693.44 [s; MET]
Trigger Stop: 747158701.632 [s; MET]
UTC: 2024-09-04T16:04:19.325020 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 136.440024834508 Dec: -30.5064390558512 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.2
Image Trigger?: NO
Rate S/N Ratio: 14.422205101856 [ if not an image trigger ]
Image S/N Ratio: 10.2
Analysis Position: [ source = BAT ]
RA: 136.440024834508 Dec: -30.5064390558512 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 136.442157655978 Dec: -30.5193145759863 [deg; J2000]
{ 09h 05m 46.1s , -30d 31' 09.5" }
+/- 1.78255674723266 [arcmin] (estimated 90% radius based on SNR)
+/- 0.951455401976796 [arcmin] (formal 1-sigma fit error)
SNR: 13.3194104488996
Angular difference between the analysis and refined position is 0.780358 arcmin
Partial Coding Fraction: 1 [ including projection effects ]
Duration
T90: 126.287999868393 +/- 11.5302941611068
Measured from: -54.8400000333786
to: 71.4479998350143 [s; relative to TRIGTIME]
T50: 59.0119999647141 +/- 12.4370828277889
Measured from: -7.89200007915497
to: 51.1199998855591 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 69.7119998931885
to: 70.7119998931885 [s; relative to TRIGTIME]
Total Fluence
Measured from: -68.6680001020432
to: 81.4759999513626 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.065638 1.282393 0.781974 0.075582
0.071404 0.072959 0.061242 0.051277 [error]
Peak 0.032789 0.041085 0.026805 0.001770
0.006431 0.006411 0.005468 0.004374 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 150.144 -68.668 81.476
T90 126.288 -54.840 71.448
T50 59.012 -7.892 51.120
Peak 1.000 69.712 70.712
====== 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 -1.750 -0.123 0.121 - - - 1.31e-03 -9.68e-05 9.58e-05 47.400 57
CPL -1.238 -0.472 0.529 68.706 -16.046 184.036 2.46e-03 -1.06e-03 2.21e-03 43.910 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 -1.804 -0.318 0.296 - - - 5.96e-03 -1.25e-03 1.22e-03 61.140 57
CPL -0.935 -1.131 1.542 53.670 -20.326 -53.670 1.84e-02 -1.84e-02 1.21e-01 59.520 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 3.17e-07 5.00e-07 5.95e-07 1.38e-06 1.81e-06 2.79e-06 erg/cm2
90%_error_low -3.31e-08 -3.35e-08 -5.96e-08 -2.65e-07 -1.38e-07 -3.24e-07 erg/cm2
90%_error_hi 3.40e-08 3.35e-08 5.98e-08 3.06e-07 1.40e-07 3.55e-07 erg/cm2
Peak flux PL 3.29e-01 2.77e-01 1.58e-01 1.35e-01 8.23e-01 8.98e-01 ph/cm2/s
90%_error_low -8.19e-02 -4.89e-02 -4.22e-02 -5.83e-02 -1.46e-01 -1.62e-01 ph/cm2/s
90%_error_hi 8.57e-02 4.89e-02 4.26e-02 7.95e-02 1.46e-01 1.63e-01 ph/cm2/s
Fluence CPL 2.96e-07 5.29e-07 5.99e-07 6.23e-07 1.73e-06 2.05e-06 erg/cm2
90%_error_low -3.85e-08 -4.23e-08 -6.45e-08 -3.02e-07 -1.56e-07 -3.44e-07 erg/cm2
90%_error_hi 3.89e-08 4.33e-08 6.44e-08 6.57e-07 1.59e-07 6.64e-07 erg/cm2
Peak flux CPL 3.00e-01 3.07e-01 1.61e-01 4.89e-02 8.04e-01 8.17e-01 ph/cm2/s
90%_error_low -9.39e-02 -6.32e-02 -5.05e-02 -4.89e-02 -1.48e-01 -8.22e-02 ph/cm2/s
90%_error_hi 9.50e-02 6.73e-02 4.87e-02 1.14e-01 1.48e-01 1.84e-01 ph/cm2/s
======================================================================
Special notes of this burst