batgrbproduct analysis for trigger=1205110
batgrbproduct Analysis for Trigger=1205110
Analysis Summary
Notes:
- 1) No attempt has been made to eliminate the non-significant decimal places.
- 2) This batgrbproduct analysis is done of the amount of data for this trigger downloaded to date.
- 3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
- 4) This page will be updated for up to 15 downlinks after the trigger.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.48
Process Start Time (local time): Fri Dec 29 10:08:16 EST 2023
Host Name: batproc1
Current Working Dir: /local/data/bat1/prebascript/trigger1205110/GCN5_download_cron
======================================================================
Trigger: 01205110 Segment: 000
BAT Trigger Time: 725446584 [s; MET]
Trigger Stop: 725446712 [s; MET]
UTC: 2023-12-28T08:55:51.372240 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 300.346960427101 Dec: 35.1372977081995 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 15.04
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 15.04
Flight Position: [ source = BAT ]
RA: 300.346960427101 Dec: 35.1372977081995 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 300.367813091346 Dec: 35.1426885545746 [deg; J2000]
{ 20h 01m 28.3s , +35d 08' 33.7" }
+/- 1.60828145551291 [arcmin] (estimated 90% radius based on SNR)
+/- 0.716669259711764 [arcmin] (formal 1-sigma fit error)
SNR: 15.428206578485
Angular difference between Flight and Ground position is 1.073044 arcmin
Partial Coding Fraction: 1 [ including projection effects ]
Duration
T90: 211.019999980927 +/- 58.4313628230888
Measured from: 375.500000119209
to: 586.520000100136 [s; relative to TRIGTIME]
T50: 108.703999996185 +/- 54.3207347372698
Measured from: 434.300000071526
to: 543.004000067711 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 587.679999947548
to: 588.679999947548 [s; relative to TRIGTIME]
Total Fluence
Measured from: 352.027999997139
to: 588.907999992371 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.501527 1.362372 0.559004 -0.103472
0.097349 0.098906 0.083544 0.070505 [error]
Peak -0.006278 0.040357 0.006916 0.015476
0.011956 0.011215 0.009802 0.008221 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
=== 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 Power-law 4.04e-07 4.50e-07 3.57e-07 4.70e-07 1.39e-06 1.68e-06 erg/cm2
Error 4.04e-08 3.36e-08 5.23e-08 1.33e-07 1.18e-07 1.97e-07 erg/cm2
Peak flux Power-law 1.04e-01 6.41e-02 2.55e-02 1.36e-02 2.00e-01 2.07e-01 ph/cm2/s
Error 1.06e-02 4.70e-03 3.59e-03 3.60e-03 1.45e-02 1.48e-02 ph/cm2/s
Fluence Cutoff-PL 3.85e-07 4.78e-07 3.39e-07 1.73e-07 1.31e-06 1.37e-06 erg/cm2
Error 4.56e-08 4.40e-08 6.04e-08 1.37e-07 1.34e-07 2.53e-07 erg/cm2
Peak flux Cutoff-PL 9.79e-02 6.79e-02 2.46e-02 6.06e-03 1.95e-01 1.97e-01 ph/cm2/s
Error 1.21e-02 6.08e-03 4.06e-03 5.61e-03 1.54e-02 1.66e-02 ph/cm2/s
Fluence Band 3.82e-07 4.75e-07 3.42e-07 1.86e-07 1.32e-06 1.39e-06 erg/cm2
Error 4.49e-08 -------- -------- -------- -------- -------- erg/cm2
Peak flux Band 9.82e-02 6.77e-02 2.48e-02 6.45e-03 1.95e-01 1.97e-01 ph/cm2/s
Error 1.21e-02 -------- -------- -------- -------- 1.66e-02 ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 0.000 0.000 - - 0.00e+00 0.00e+00 0.000 0
CPL 0.000 0.000 0.0 0.0 0.00e+00 0.00e+00 0.000 0
The chi2 of BB fit is 91.74 which shows a significant improvement in the fit over a PL.
Check the BB fit.
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 0.000 0.000 - - 0.00e+00 0.00e+00 0.000 0
CPL 0.000 0.000 0.0 0.0 0.00e+00 0.00e+00 0.000 0
Model : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index : photon index: E^-{Ph_index} (minus sign is not included in the 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 PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2 : Chi-Squared
dof : degree of freedom
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
T90 in the 50-300 keV band: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 236.880 352.028 588.908
T90 211.020 375.500 586.520
T50 108.704 434.300 543.004
Peak 1.000 587.680 588.680
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
300.3678 +35.1427 0.0125 0.2 -95.2 3.0679 15.4 TRIG_01205110
------------------------------------------
Foreground time interval of the image:
0.000 128.000 (delta_t = 128.000 [sec])
Background time interval of the image:
Lightcurves
Notes:
- 1) All plots contain as much data as has been downloaded to date.
- 2) The mask-weighted light curves are using the flight position.
- 3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 4) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
- 5) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
- 6) Time of each bin is in the middle of the bin.
1 s binning
From T0-310 s to T0+310 s
From T100_start - 20 s to T100_end + 30 s
Full time interval
64 ms binning
Full time interval
From T100_start to T100_end
From T0-5 sec to T0+5 sec
16 ms binning
From T100_start-5 s to T100_start+5 s
8 ms binning
From T100_start-3 s to T100_start+3 s
2 ms binning
From T100_start-1 s to T100_start+1 s
SN=5 or 10 sec. binning (whichever binning is satisfied first)
SN=5 or 10 sec. binning (T < 200 sec)
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) For long bursts, a spectral fit of the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
- 3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.
- 4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.
Time averaged spectrum fit using the pre-slew DRM
Power-law model
Multiple GTIs in the spectrum
tstart tstop
352.028000 391.300000
392.000000 432.000000
434.000000 462.420000
464.000000 588.908000
Usage: bat_spec_fit_sys_xspec12.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
This script tries to add the systematic column to the PHA
file before doing the fitting
script folder: /local/data/BATtools/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
352.028000 391.300000
392.000000 432.000000
434.000000 462.420000
464.000000 588.908000
Usage: bat_spec_fit_cutoff_sys_xspec12.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
This script tries to add the systematic column to the PHA
file before doing the fitting
script folder: /local/data/bat2/BATtools/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Band function
Multiple GTIs in the spectrum
tstart tstop
352.028000 391.300000
392.000000 432.000000
434.000000 462.420000
464.000000 588.908000
Usage: bat_spec_fit_band_sys.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
This script tries to add the systematic column to the PHA
file before doing the fitting
script folder: /local/data/bat2/BATtools/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Single BB
Usage: bat_spec_fit_bb_sys.sh (pha file) (response file)
This script tries to add the systematic column to the PHA
file before doing the fitting
Thermal bremsstrahlung (OTTB)
Usage: bat_spec_fit_brems_sys.sh (pha file) (response file)
This script tries to add the systematic column to the PHA
file before doing the fitting
Double BB
Usage: bat_spec_fit_2bb_sys.sh (pha file) (response file)
This script tries to add the systematic column to the PHA
file before doing the fitting
Peak spectrum fit
Power-law model
Time interval is from 587.680 sec. to 588.680 sec.
Usage: bat_spec_fit_sys_xspec12.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
This script tries to add the systematic column to the PHA
file before doing the fitting
script folder: /local/data/BATtools/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Cutoff power-law model
Time interval is from 587.680 sec. to 588.680 sec.
Usage: bat_spec_fit_cutoff_sys_xspec12.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
This script tries to add the systematic column to the PHA
file before doing the fitting
script folder: /local/data/bat2/BATtools/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Band function
Time interval is from 587.680 sec. to 588.680 sec.
Usage: bat_spec_fit_band_sys.sh (pha file) (response file) (script folder) (folder of taka's xspec lmodel)
This script tries to add the systematic column to the PHA
file before doing the fitting
script folder: /local/data/bat2/BATtools/battools/bin/GRB_spec_fit_v2
folder of taka's xspec lmodel: /local/data/bat1/prebascript/xspec_taka_lmodel
Single BB
Usage: bat_spec_fit_bb_sys.sh (pha file) (response file)
This script tries to add the systematic column to the PHA
file before doing the fitting
Thermal bremsstrahlung (OTTB)
Usage: bat_spec_fit_brems_sys.sh (pha file) (response file)
This script tries to add the systematic column to the PHA
file before doing the fitting
Double BB
Usage: bat_spec_fit_2bb_sys.sh (pha file) (response file)
This script tries to add the systematic column to the PHA
file before doing the fitting
Plot creation:
Fri Dec 29 10:11:15 EST 2023