batgrbproduct analysis for trigger=1203197
batgrbproduct Analysis for Trigger=1203197
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 Dec 20 09:54:34 EST 2023
Host Name: batproc1
Current Working Dir: /local/data/bat1/prebascript/trigger1203197/GCN5_download_cron
======================================================================
Trigger: 01203197 Segment: 000
BAT Trigger Time: 724697952 [s; MET]
Trigger Stop: 724698280 [s; MET]
UTC: 2023-12-19T16:58:39.423600 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 245.292501749288 Dec: -15.7981697429747 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 14.05
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 14.05
Flight Position: [ source = BAT ]
RA: 245.292501749288 Dec: -15.7981697429747 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 245.263509879892 Dec: -15.8117148687826 [deg; J2000]
{ 16h 21m 03.2s , -15d 48' 42.2" }
+/- 1.97321665966036 [arcmin] (estimated 90% radius based on SNR)
+/- 1.05542339674674 [arcmin] (formal 1-sigma fit error)
SNR: 11.5196724916608
Angular difference between Flight and Ground position is 1.860626 arcmin
Partial Coding Fraction: 0.2363281 [ including projection effects ]
Duration
T90: 51.3039999008179 +/- 13.5513021598204
Measured from: 360.648000121117
to: 411.952000021935 [s; relative to TRIGTIME]
T50: 20.4759999513626 +/- 13.2006287116797
Measured from: 381.512000083923
to: 401.988000035286 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 411.128000020981
to: 412.128000020981 [s; relative to TRIGTIME]
Total Fluence
Measured from: 359.047999978065
to: 414.136000037193 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.058696 0.409396 0.045630 -0.003835
0.122502 0.130830 0.115773 0.131817 [error]
Peak 0.067235 0.037434 0.025246 0.034114
0.018519 0.020157 0.018412 0.020794 [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 4.65e-06 7.25e-07 5.23e-08 4.02e-09 5.43e-06 5.43e-06 erg/cm2
Error 4.49e-07 1.25e-07 2.25e-08 3.01e-09 4.53e-07 4.53e-07 erg/cm2
Peak flux Power-law 5.10e-01 4.64e-02 1.67e-03 6.24e-05 5.58e-01 5.58e-01 ph/cm2/s
Error 5.11e-02 7.59e-03 7.03e-04 4.52e-05 5.06e-02 5.06e-02 ph/cm2/s
Fluence Cutoff-PL 4.69e-06 5.18e-07 1.50e-09 1.11e-14 5.21e-06 5.21e-06 erg/cm2
Error 4.80e-07 1.78e-07 1.29e-08 1.38e-10 4.92e-07 4.92e-07 erg/cm2
Peak flux Cutoff-PL 5.09e-01 3.51e-02 5.42e-05 2.11e-10 5.44e-01 5.44e-01 ph/cm2/s
Error 5.51e-02 1.08e-02 4.31e-04 2.38e-06 5.50e-02 5.50e-02 ph/cm2/s
Fluence Band -------- -------- -------- -------- -------- -------- erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Band 4.64e-01 6.88e-03 2.23e-05 7.24e-08 4.71e-01 4.71e-01 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 39.94 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 55.088 359.048 414.136
T90 51.304 360.648 411.952
T50 20.476 381.512 401.988
Peak 1.000 411.128 412.128
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
245.2635 -15.8117 0.0167 37.5 -67.8 14.1352 11.5 TRIG_01203197
------------------------------------------
Foreground time interval of the image:
0.000 168.690 (delta_t = 168.690 [sec])
170.000 177.170 (delta_t = 7.170 [sec])
179.000 276.430 (delta_t = 97.430 [sec])
278.000 288.600 (delta_t = 10.600 [sec])
290.000 297.680 (delta_t = 7.680 [sec])
299.000 328.000 (delta_t = 29.000 [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 359.048 sec. to 414.136 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 359.048 sec. to 414.136 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 359.048 sec. to 414.136 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 411.128 sec. to 412.128 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 411.128 sec. to 412.128 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 411.128 sec. to 412.128 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 Dec 20 09:56:22 EST 2023