batgrbproduct analysis for trigger=1150107
batgrbproduct Analysis for Trigger=1150107
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): Sun Jan 22 11:52:14 EST 2023
Host Name: batproc1
Current Working Dir: /local/data/bat1/prebascript/trigger1150107/GCN5_download_cron
======================================================================
Trigger: 01150107 Segment: 000
BAT Trigger Time: 695972688 [s; MET]
Trigger Stop: 695972752 [s; MET]
UTC: 2023-01-21T05:44:17.385960 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 70.2675240336892 Dec: 44.5251276674773 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 18.08
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 18.08
Flight Position: [ source = BAT ]
RA: 70.2675240336892 Dec: 44.5251276674773 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 70.1948935120162 Dec: 44.5097356055812 [deg; J2000]
{ 04h 40m 46.8s , +44d 30' 35.0" }
+/- 2.72828445689505 [arcmin] (estimated 90% radius based on SNR)
+/- 1.45324285400289 [arcmin] (formal 1-sigma fit error)
SNR: 7.25135023340287
Angular difference between Flight and Ground position is 3.241633 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 1047.94799995422 +/- 144.831554239483
Measured from: -134.595999836922
to: 913.352000117302 [s; relative to TRIGTIME]
T50: 740.135999917984 +/- 143.048354974743
Measured from: 64.2480001449585
to: 804.384000062943 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -135.947999954224
to: -134.947999954224 [s; relative to TRIGTIME]
Total Fluence
Measured from: -166.136000037193
to: 935.963999986649 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 21.151745 19.412903 6.162938 -0.395544
0.299165 0.304586 0.258978 0.233560 [error]
Peak 0.059620 0.080340 0.038288 0.002976
0.009885 0.010228 0.008563 0.007099 [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 7.35e-06 7.30e-06 5.08e-06 5.60e-06 2.20e-05 2.53e-05 erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Power-law 6.02e-01 4.92e-01 2.72e-01 2.21e-01 1.46e+00 1.59e+00 ph/cm2/s
Error 1.27e-01 7.59e-02 6.46e-02 9.75e-02 2.26e-01 2.51e-01 ph/cm2/s
Fluence Cutoff-PL 5.98e-06 8.03e-06 4.52e-06 8.93e-07 1.93e-05 1.94e-05 erg/cm2
Error 4.15e-07 2.48e-07 3.14e-07 3.20e-07 7.43e-07 8.20e-07 erg/cm2
Peak flux Cutoff-PL 5.13e-01 6.07e-01 2.59e-01 3.01e-02 1.41e+00 1.41e+00 ph/cm2/s
Error 1.48e-01 1.15e-01 8.64e-02 6.10e-02 2.28e-01 2.32e-01 ph/cm2/s
Fluence Band 5.92e-06 7.99e-06 4.51e-06 8.92e-07 1.92e-05 1.94e-05 erg/cm2
Error 3.92e-07 2.36e-07 3.10e-07 -------- 7.30e-07 -------- 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 2.523 0.000 - - 1.98e-03 0.00e+00 130.520 57
CPL 1.045 0.343 26.9 3.8 1.32e-02 6.06e-03 55.670 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.856 0.258 - - 1.04e-02 1.92e-03 60.190 57
CPL 0.004 1.648 44.2 13.0 1.25e-01 9.04e-01 54.270 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 1102.100 -166.136 935.964
T90 1047.950 -134.596 913.352
T50 740.136 64.248 804.384
Peak 1.000 -135.948 -134.948
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
70.1949 +44.5097 0.0266 0.1 -129.0 16.1485 7.3 TRIG_01150107
------------------------------------------
Foreground time interval of the image:
-166.136 843.044 (delta_t = 1009.180 [sec])
844.000 935.964 (delta_t = 91.964 [sec])
Background time interval of the image:
-236.899 -166.136 (delta_t = 70.763 [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
-166.136000 843.044000
844.000000 935.964000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.52261 ( )
Norm@50keV : 1.98304E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 130.52 using 59 PHA bins.
# Reduced chi-squared = 2.2899 for 57 degrees of freedom
# Null hypothesis probability = 1.076059e-07
Photon flux (15-150 keV) in 1101 sec: 0.395014 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.19679e-05 ( 0 0 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-166.136000 843.044000
844.000000 935.964000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.04476 ( -0.354917 0.330396 )
Epeak [keV] : 26.8659 ( -4.48955 3.18478 )
Norm@50keV : 1.31519E-02 ( -0.00451683 0.00759917 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.67 using 59 PHA bins.
# Reduced chi-squared = 0.9941 for 56 degrees of freedom
# Null hypothesis probability = 4.872842e-01
Photon flux (15-150 keV) in 1101 sec: 0.351341 ( -0.014488 0.014648 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.92707e-05 ( -7.35578e-07 7.50662e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-166.136000 843.044000
844.000000 935.964000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.59778 ( )
beta : -8.78669 ( )
Epeak [keV] : 27.7479 ( )
Norm@50keV : 4.73148E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 134.94 using 59 PHA bins.
# Reduced chi-squared = 2.4535 for 55 degrees of freedom
# Null hypothesis probability = 1.148143e-08
Photon flux (15-150 keV) in 1101 sec: 0.352271 ( 6.64773 -0.015193 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.92359e-05 ( -1.92282e-05 -7.2699e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 9.03889 ( )
R^2/D10^2 : 0.230196 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 159.98 using 59 PHA bins.
# Reduced chi-squared = 2.8067 for 57 degrees of freedom
# Null hypothesis probability = 1.034216e-11
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.041e-06 2.031e-07
25- 50 8.646e-06 2.307e-07
50-150 3.342e-06 2.675e-07
15-150 1.603e-05 4.239e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 36.7383 (-2.22047 2.42536)
Norm : 2.54966 (-0.156537 0.167802)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.252e-06 2.945e-07
25- 50 7.918e-06 2.152e-07
50-150 5.566e-06 4.002e-07
15-150 1.974e-05 5.560e-07
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.04091 (-0.78592 0.859019)
R1^2/D10^2 : 1.53783 (-0.659625 1.53116)
kT2 [keV] : 12.4236 (-1.14827 1.69668)
R2^2/D10^2 : 4.35989E-02 (-0.0216289 0.0291581)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.824e-06 9.111e-07
25- 50 7.979e-06 8.632e-07
50-150 5.003e-06 6.678e-07
15-150 1.881e-05 1.927e-06
Peak spectrum fit
Power-law model
Time interval is from -135.948 sec. to -134.948 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.85560 ( -0.249646 0.267288 )
Norm@50keV : 1.03948E-02 ( -0.0019458 0.00190187 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.19 using 59 PHA bins.
# Reduced chi-squared = 1.056 for 57 degrees of freedom
# Null hypothesis probability = 3.610997e-01
Photon flux (15-150 keV) in 1 sec: 1.46443 ( -0.226063 0.226067 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.55773e-08 ( -1.75451e-08 1.80339e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -135.948 sec. to -134.948 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 4.10452E-03 ( -1.93895 1.35631 )
Epeak [keV] : 44.1749 ( -8.33431 17.6642 )
Norm@50keV : 0.125188 ( -0.125194 1.682 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.27 using 59 PHA bins.
# Reduced chi-squared = 0.9691 for 56 degrees of freedom
# Null hypothesis probability = 5.406046e-01
Photon flux (15-150 keV) in 1 sec: 1.40599 ( -0.22757 0.22861 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.29111e-08 ( -1.65631e-08 1.89009e-08 ) ergs/cm2
Band function
Time interval is from -135.948 sec. to -134.948 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.248291 ( -1.58579 -0.221924 )
beta : -3.56418 ( 3.59879 1.59864 )
Epeak [keV] : 42.9089 ( -14.4085 10.3055 )
Norm@50keV : 0.179814 ( -0.080114 146.863 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.29 using 59 PHA bins.
# Reduced chi-squared = 0.9870 for 55 degrees of freedom
# Null hypothesis probability = 5.018252e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 8.31683e-08 ( 0 0 ) ergs/cm2
Single BB
XSPEC: quit
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.6376 (-1.53408 1.82711)
R^2/D10^2 : 0.588429 (-0.266053 0.464967)
(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 1.381e-08 3.709e-09
25- 50 3.737e-08 7.885e-09
50-150 2.327e-08 9.300e-09
15-150 7.445e-08 1.592e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
XSPEC: quit
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 78.1586 (-28.3157 61.2291)
Norm : 7.08338 (-1.38322 1.75857)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.835e-08 3.895e-09
25- 50 3.004e-08 5.685e-09
50-150 4.174e-08 2.428e-08
15-150 9.013e-08 3.299e-08
Double BB
XSPEC12>exit
XSPEC: quit
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.72915 (-7.38989 -7.38989)
R1^2/D10^2 : 1.19452 (-1.19187 -1.19187)
kT2 [keV] : 16.8582 (-16.9134 -16.9134)
R2^2/D10^2 : 5.51916E-02 (-0.0543252 0.744264)
------------------------------------------------------------
Reduced chi-squared =
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.585e-08 9.905e-09
25- 50 3.460e-08 2.143e-08
50-150 3.254e-08 1.883e-08
15-150 8.299e-08 4.655e-08
Plot creation:
Sun Jan 22 11:55:33 EST 2023