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: Thu Jun 19 20:26:33 EDT 2025
Host Name: batproc1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1321323
======================================================================
Trigger: 01321323 Segment: 000
BAT Trigger Time: 770842387.008 [s; MET]
Trigger Stop: 770842388.032 [s; MET]
UTC: 2025-06-05T18:52:31.274380 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 166.976975771878 Dec: -19.7948394952968 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 15.53
Image Trigger?: NO
Rate S/N Ratio: 53.507008886687 [ if not an image trigger ]
Image S/N Ratio: 15.53
Analysis Position: [ source = BAT ]
RA: 166.976975771878 Dec: -19.7948394952968 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 166.962774612972 Dec: -19.7859449720484 [deg; J2000]
{ 11h 07m 51.1s , -19d 47' 09.4" }
+/- 1.13903145531156 [arcmin] (estimated 90% radius based on SNR)
+/- 0.398845003208603 [arcmin] (formal 1-sigma fit error)
SNR: 25.2553312467721
Angular difference between the analysis and refined position is 0.963119 arcmin
Partial Coding Fraction: 0.3515625 [ including projection effects ]
Duration
T90: 175.784000039101 +/- 5.07888022227215
Measured from: -85.6160000562668
to: 90.1679999828339 [s; relative to TRIGTIME]
T50: 65.1840000152588 +/- 3.23786647390019
Measured from: -1.60000002384186
to: 63.5839999914169 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.00400006771087646
to: 0.995999932289124 [s; relative to TRIGTIME]
Total Fluence
Measured from: -100.284000039101
to: 116.503999948502 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 6.209757 7.683213 4.805940 1.088140
0.142394 0.147528 0.120932 0.096943 [error]
Peak 0.184083 0.238289 0.255312 0.099537
0.014701 0.017457 0.016612 0.011857 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 216.788 -100.284 116.504
T90 175.784 -85.616 90.168
T50 65.184 -1.600 63.584
Peak 1.000 -0.004 0.996
====== 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: 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 -1.798 -0.050 0.050 - - - 5.78e-03 -1.53e-04 1.52e-04 77.920 57
CPL -1.487 -0.208 0.218 84.526 -15.801 64.229 8.17e-03 -1.65e-03 2.20e-03 71.300 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 -1.251 -0.122 0.123 - - - 5.13e-02 -3.55e-03 3.55e-03 56.360 57
CPL -1.209 -0.164 0.324 991.856 -991.856 -991.856 5.38e-02 -5.84e-03 2.00e-02 56.540 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 2.12e-06 3.25e-06 3.73e-06 8.23e-06 1.15e-05 1.73e-05 erg/cm2
90%_error_low -1.04e-07 -9.27e-08 -1.29e-07 -6.17e-07 -3.09e-07 -7.01e-07 erg/cm2
90%_error_hi 1.06e-07 9.26e-08 1.29e-07 6.51e-07 3.09e-07 7.25e-07 erg/cm2
Peak flux PL 1.66e+00 1.94e+00 1.63e+00 2.32e+00 6.07e+00 7.56e+00 ph/cm2/s
90%_error_low -2.18e-01 -1.58e-01 -1.34e-01 -3.81e-01 -4.33e-01 -5.46e-01 ph/cm2/s
90%_error_hi 2.27e-01 1.56e-01 1.32e-01 4.24e-01 4.34e-01 5.51e-01 ph/cm2/s
Fluence CPL 1.98e-06 3.31e-06 3.79e-06 5.37e-06 1.12e-05 1.45e-05 erg/cm2
90%_error_low -1.33e-07 -1.04e-07 -1.38e-07 -1.25e-06 -3.63e-07 -1.31e-06 erg/cm2
90%_error_hi 1.36e-07 1.05e-07 1.39e-07 1.73e-06 3.61e-07 1.76e-06 erg/cm2
Peak flux CPL 1.70e+00 1.93e+00 1.61e+00 2.31e+00 6.10e+00 7.82e+00 ph/cm2/s
90%_error_low -2.87e-01 -1.53e-01 -1.24e-01 -1.59e-01 -6.26e-01 -1.11e+00 ph/cm2/s
90%_error_hi 2.09e-01 1.88e-01 1.77e-01 4.20e-01 5.80e-01 2.67e-01 ph/cm2/s
======================================================================
Special notes of this burst