batgrbproduct analysis for trigger=1069242
batgrbproduct Analysis for Trigger=1069242
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): Thu Aug 19 15:52:34 EDT 2021
Host Name: batproc1
Current Working Dir: /local/data/bat1/prebascript/trigger1069242/GCN5_download_cron
======================================================================
Trigger: 01069242 Segment: 000
BAT Trigger Time: 650996248 [s; MET]
Trigger Stop: 650996312 [s; MET]
UTC: 2021-08-18T16:17:00.428980 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 299.818776326101 Dec: 35.2770795652221 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 12.49
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 12.49
Flight Position: [ source = BAT ]
RA: 299.818776326101 Dec: 35.2770795652221 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 299.778136414175 Dec: 35.2698552379913 [deg; J2000]
{ 19h 59m 06.8s , +35d 16' 11.5" }
+/- 1.63180315791741 [arcmin] (estimated 90% radius based on SNR)
+/- 0.700815231910457 [arcmin] (formal 1-sigma fit error)
SNR: 15.1114897550909
Angular difference between Flight and Ground position is 2.037362 arcmin
Partial Coding Fraction: 0.828125 [ including projection effects ]
Duration
T90: 395.647999882698 +/- 191.997385172258
Measured from: 315.904000163078
to: 711.552000045776 [s; relative to TRIGTIME]
T50: 221.927999973297 +/- 49.7244858909304
Measured from: 412.340000152588
to: 634.268000125885 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 606.552000045776
to: 607.552000045776 [s; relative to TRIGTIME]
Total Fluence
Measured from: 143.259999990463
to: 795.544000029564 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.997515 3.947053 1.813850 0.381608
0.155891 0.158598 0.138301 0.129502 [error]
Peak 0.013451 0.011632 0.017942 0.014627
0.006526 0.006556 0.005733 0.005413 [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 2.45e-07 2.87e-07 2.43e-07 3.49e-07 9.00e-07 1.12e-06 erg/cm2
Error 3.08e-08 2.83e-08 4.62e-08 1.28e-07 1.05e-07 1.85e-07 erg/cm2
Peak flux Power-law 1.27e-01 8.30e-02 3.51e-02 2.03e-02 2.56e-01 2.66e-01 ph/cm2/s
Error 1.64e-02 7.99e-03 6.45e-03 6.94e-03 2.38e-02 2.49e-02 ph/cm2/s
Fluence Cutoff-PL 2.37e-07 3.07e-07 2.22e-07 1.06e-07 8.35e-07 8.73e-07 erg/cm2
Error 3.32e-08 3.94e-08 6.21e-08 1.75e-07 1.30e-07 2.61e-07 erg/cm2
Peak flux Cutoff-PL 1.22e-01 8.86e-02 3.27e-02 7.69e-03 2.49e-01 2.51e-01 ph/cm2/s
Error 1.79e-02 1.12e-02 8.33e-03 1.27e-02 2.52e-02 2.84e-02 ph/cm2/s
Fluence Band 2.31e-07 3.13e-07 2.13e-07 2.17e-07 8.48e-07 9.82e-07 erg/cm2
Error 3.42e-08 -------- -------- -------- -------- -------- erg/cm2
Peak flux Band -------- -------- -------- -------- -------- -------- ph/cm2/s
Error -------- -------- -------- -------- -------- -------- 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 93.26 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 652.284 143.260 795.544
T90 395.648 315.904 711.552
T50 221.928 412.340 634.268
Peak 1.000 606.552 607.552
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
299.7781 +35.2699 0.0127 25.0 163.7 2.0240 15.1 TRIG_01069242
------------------------------------------
Foreground time interval of the image:
0.000 28.950 (delta_t = 28.950 [sec])
30.000 64.000 (delta_t = 34.000 [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
143.260000 654.197400
661.000000 714.550000
781.000000 795.544000
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
143.260000 654.197400
661.000000 714.550000
781.000000 795.544000
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
143.260000 654.197400
661.000000 714.550000
781.000000 795.544000
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 606.552 sec. to 607.552 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 606.552 sec. to 607.552 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 606.552 sec. to 607.552 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:
Thu Aug 19 15:55:47 EDT 2021