batgrbproduct analysis for trigger=1200562
batgrbproduct Analysis for Trigger=1200562
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): Tue Dec 5 11:09:09 EST 2023
Host Name: batproc1
Current Working Dir: /local/data/bat1/prebascript/trigger1200562/GCN5_download_cron
======================================================================
Trigger: 01200562 Segment: 000
BAT Trigger Time: 723352152 [s; MET]
Trigger Stop: 723352232 [s; MET]
UTC: 2023-12-04T03:08:39.515700 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 135.451441286992 Dec: -40.1473994693415 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 11.32
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 11.32
Flight Position: [ source = BAT ]
RA: 135.451441286992 Dec: -40.1473994693415 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 135.451811094286 Dec: -40.1331560780342 [deg; J2000]
{ 09h 01m 48.4s , -40d 07' 59.4" }
+/- nan [arcmin] (estimated 90% radius based on SNR)
+/- 2.43459974196025 [arcmin] (formal 1-sigma fit error)
SNR: -5.82015893392949
Angular difference between Flight and Ground position is 0.854772 arcmin
Partial Coding Fraction: 1 [ including projection effects ]
Duration
T90: 62.0160000324249 +/- 17.8817537509951
Measured from: 40.2240000963211
to: 102.240000128746 [s; relative to TRIGTIME]
T50: 29.4400000572205 +/- 11.3464622605376
Measured from: 51.0400000810623
to: 80.4800001382828 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 88.3719999790192
to: 89.3719999790192 [s; relative to TRIGTIME]
Total Fluence
Measured from: 37.1360000371933
to: 106.62399995327 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.379991 0.251314 0.022822 0.005967
0.049777 0.051815 0.045508 0.043704 [error]
Peak 0.016066 0.011518 0.006775 0.005095
0.005936 0.006229 0.005793 0.005300 [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 1.18e-07 9.30e-08 4.95e-08 3.83e-08 2.78e-07 2.99e-07 erg/cm2
Error 2.23e-08 2.56e-08 2.79e-08 4.60e-08 7.22e-08 9.39e-08 erg/cm2
Peak flux Power-law 1.40e-01 9.16e-02 3.90e-02 2.28e-02 2.82e-01 2.93e-01 ph/cm2/s
Error 8.01e-02 6.98e-02 4.17e-02 4.90e-02 1.37e-01 1.50e-01 ph/cm2/s
Fluence Cutoff-PL 1.22e-07 9.64e-08 1.61e-08 3.00e-10 2.35e-07 2.35e-07 erg/cm2
Error 2.49e-08 3.57e-08 3.63e-08 3.44e-08 7.35e-08 9.23e-08 erg/cm2
Peak flux Cutoff-PL 1.37e-01 9.87e-02 3.61e-02 8.30e-03 2.78e-01 2.80e-01 ph/cm2/s
Error 1.10e-01 6.48e-02 4.19e-02 4.80e-02 1.37e-01 1.50e-01 ph/cm2/s
Fluence Band -------- -------- -------- -------- -------- -------- erg/cm2
Error -------- -------- -------- -------- -------- -------- 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 2.910 0.483 - - 3.52e-04 1.50e-04 61.610 57
CPL 1.000 0.000 50.0 0.0 1.82e-03 0.00e+00 83.440 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.231 1.211 - - 1.67e-03 1.30e-03 71.220 57
CPL 1.616 0.000 22.6 0.0 4.12e-03 0.00e+00 71.150 56
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 69.488 37.136 106.624
T90 62.016 40.224 102.240
T50 29.440 51.040 80.480
Peak 1.000 88.372 89.372
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
135.4518 -40.1332 0.0330 0.2 84.8 -0.5673 -5.8 TRIG_01200562
------------------------------------------
Foreground time interval of the image:
37.136 41.760 (delta_t = 4.624 [sec])
43.000 84.401 (delta_t = 41.401 [sec])
Background time interval of the image:
-60.000 26.720 (delta_t = 86.720 [sec])
28.000 37.136 (delta_t = 9.136 [sec])
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
37.136000 41.760000
43.000000 106.624000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.90954 ( -0.436553 0.529824 )
Norm@50keV : 3.52341E-04 ( -0.000141862 0.000157818 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.61 using 59 PHA bins.
# Reduced chi-squared = 1.081 for 57 degrees of freedom
# Null hypothesis probability = 3.144941e-01
Photon flux (15-150 keV) in 68.25 sec: 9.07981E-02 ( -0.0169006 0.017011 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.7755e-07 ( -6.82252e-08 7.62509e-08 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
37.136000 41.760000
43.000000 106.624000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 1.82253E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 83.44 using 59 PHA bins.
# Reduced chi-squared = 1.490 for 56 degrees of freedom
# Null hypothesis probability = 1.014246e-02
Photon flux (15-150 keV) in 68.25 sec: 8.82711E-02 ( -0.0162471 0.0165439 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.35149e-07 ( -5.71396e-08 8.98627e-08 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
37.136000 41.760000
43.000000 106.624000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.93588 ( -4.93588 -4.93588 )
beta : -3.43780 ( -3.55341 0.717819 )
Epeak [keV] : 18.7243 ( -18.7243 3.58568 )
Norm@50keV : 922.595 ( -161.833 2.49887e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.27 using 59 PHA bins.
# Reduced chi-squared = 1.078 for 55 degrees of freedom
# Null hypothesis probability = 3.226096e-01
Photon flux (15-150 keV) in 68.25 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.10578 (-0.892348 1.08066)
R^2/D10^2 : 0.697366 (-0.40096 0.998511)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.79 using 59 PHA bins.
# Reduced chi-squared = 1.066 for 57 degrees of freedom
# Null hypothesis probability = 3.411074e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.258e-07 4.470e-08
25- 50 8.647e-08 3.942e-08
50-150 3.886e-09 3.180e-09
15-150 2.161e-07 7.999e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 17.8313 (-5.91328 9.57652)
Norm : 1.27237 (-0.487284 0.871078)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.214e-07 3.651e-08
25- 50 9.686e-08 3.837e-08
50-150 2.375e-08 1.740e-08
15-150 2.420e-07 7.678e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.39964 (-4.39345 1.60209)
R1^2/D10^2 : 1.17341 (-1.17635 -1.17635)
kT2 [keV] : 11.8892 (-11.8269 -11.8269)
R2^2/D10^2 : 5.91261E-03 (-0.00607295 1.27793)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.255e-07 7.658e-08
25- 50 9.082e-08 5.204e-08
50-150 3.282e-08 2.754e-08
15-150 2.491e-07 1.395e-07
Peak spectrum fit
Power-law model
Time interval is from 88.372 sec. to 89.372 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.23119 ( -0.91791 1.50364 )
Norm@50keV : 1.67409E-03 ( -0.00129465 0.00129713 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.22 using 59 PHA bins.
# Reduced chi-squared = 1.250 for 57 degrees of freedom
# Null hypothesis probability = 9.741151e-02
Photon flux (15-150 keV) in 1 sec: 0.281775 ( -0.13686 0.138052 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.58125e-08 ( -9.57188e-09 1.17528e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 88.372 sec. to 89.372 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.61644 ( )
Epeak [keV] : 22.5633 ( )
Norm@50keV : 4.12315E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.15 using 59 PHA bins.
# Reduced chi-squared = 1.271 for 56 degrees of freedom
# Null hypothesis probability = 8.356639e-02
Photon flux (15-150 keV) in 1 sec: 0.277803 ( -0.13455 0.139574 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.47133e-08 ( -8.90629e-09 1.25664e-08 ) ergs/cm2
Band function
Time interval is from 88.372 sec. to 89.372 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.36552 ( 1.60887 1.60887 )
beta : -3.31010 ( 3.68629 13.6608 )
Epeak [keV] : 31.8287 ( -25.0652 -25.0652 )
Norm@50keV : 5.23790E-03 ( -0.00397167 1.18404e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.20 using 59 PHA bins.
# Reduced chi-squared = 1.294 for 55 degrees of freedom
# Null hypothesis probability = 6.989032e-02
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.51795e-08 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.40140 (-3.56521 7.40779)
R^2/D10^2 : 0.422559 (-0.420342 6.0579)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.926e-09 2.473e-09
25- 50 5.976e-09 4.288e-09
50-150 1.207e-09 1.269e-09
15-150 1.111e-08 7.350e-09
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 42.4478 (-42.4478 -42.4478)
Norm : 1.77303 (-1.02661 4.54827)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.150e-09 2.715e-09
25- 50 5.598e-09 3.599e-09
50-150 4.616e-09 4.056e-09
15-150 1.436e-08 1.051e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 16.9045 (-16.6138 -16.6138)
R1^2/D10^2 : 1.03625E-02 (-0.014543 3.51743)
kT2 [keV] : 5.08341 (-4.80661 8.12045)
R2^2/D10^2 : 1.42642 (-1.65736 -1.65736)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.279e-09 2.842e-09
25- 50 5.320e-09 3.519e-09
50-150 4.669e-09 3.299e-09
15-150 1.427e-08 9.070e-09
Plot creation:
Tue Dec 5 11:11:21 EST 2023