batgrbproduct analysis for trigger=1209369
batgrbproduct Analysis for Trigger=1209369
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): Wed Jan 17 23:00:08 EST 2024
Host Name: batproc1
Current Working Dir: /local/data/bat1/prebascript/trigger1209369/GCN5_download_cron
======================================================================
Trigger: 01209369 Segment: 000
BAT Trigger Time: 727170136 [s; MET]
Trigger Stop: 727170200 [s; MET]
UTC: 2024-01-17T07:41:43.253940 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 245.343426883681 Dec: -15.8169754550191 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.37
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 10.37
Flight Position: [ source = BAT ]
RA: 245.343426883681 Dec: -15.8169754550191 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 245.36403131889 Dec: -15.8354085714358 [deg; J2000]
{ 16h 21m 27.4s , -15d 50' 07.5" }
+/- 2.51419266064743 [arcmin] (estimated 90% radius based on SNR)
+/- 1.53538230147025 [arcmin] (formal 1-sigma fit error)
SNR: 8.14930261828137
Angular difference between Flight and Ground position is 1.624158 arcmin
Partial Coding Fraction: 0.6640625 [ including projection effects ]
Duration
T90: 14.3359998464584 +/- 3.72700412645411
Measured from: 134.240000128746
to: 148.575999975204 [s; relative to TRIGTIME]
T50: 8.6399998664856 +/- 4.47817109416699
Measured from: 136.224000096321
to: 144.863999962807 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 140.235999941826
to: 141.235999941826 [s; relative to TRIGTIME]
Total Fluence
Measured from: 133.919999957085
to: 150.111999988556 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.502747 0.072180 0.035815 0.043314
0.029924 0.027777 0.023558 0.021845 [error]
Peak 0.039367 0.015754 0.003939 0.007920
0.007162 0.006836 0.005904 0.005733 [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 5.44e-07 1.03e-07 9.50e-09 9.51e-10 6.57e-07 6.57e-07 erg/cm2
Error 6.43e-08 3.06e-08 6.62e-09 1.34e-09 7.74e-08 7.75e-08 erg/cm2
Peak flux Power-law 2.97e-01 3.27e-02 1.51e-03 7.26e-05 3.31e-01 3.31e-01 ph/cm2/s
Error 3.60e-02 9.23e-03 1.02e-03 9.89e-05 3.79e-02 3.79e-02 ph/cm2/s
Fluence Cutoff-PL 5.54e-07 7.68e-08 4.17e-10 1.27e-14 6.31e-07 6.31e-07 erg/cm2
Error 6.71e-08 3.82e-08 4.78e-09 3.61e-10 7.60e-08 7.50e-08 erg/cm2
Peak flux Cutoff-PL 2.99e-01 2.57e-02 7.49e-05 1.20e-09 3.25e-01 3.25e-01 ph/cm2/s
Error 3.76e-02 1.17e-02 7.66e-04 2.83e-05 3.86e-02 3.86e-02 ph/cm2/s
Fluence Band -------- -------- -------- -------- -------- -------- erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Band 2.97e-01 2.43e-02 1.09e-04 3.31e-07 3.22e-01 3.22e-01 ph/cm2/s
Error 3.73e-02 -------- -------- -------- 3.80e-02 3.81e-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 66.71 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 16.192 133.920 150.112
T90 14.336 134.240 148.576
T50 8.640 136.224 144.864
Peak 1.000 140.236 141.236
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
245.3640 -15.8354 0.0236 26.2 -115.5 1.9081 8.1 TRIG_01209369
------------------------------------------
Foreground time interval of the image:
0.000 64.000 (delta_t = 64.000 [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
Time interval is from 133.920 sec. to 150.112 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 133.920 sec. to 150.112 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 133.920 sec. to 150.112 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
Peak spectrum fit
Power-law model
Time interval is from 140.236 sec. to 141.236 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 140.236 sec. to 141.236 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 140.236 sec. to 141.236 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:
Wed Jan 17 23:01:05 EST 2024