batgrbproduct analysis for trigger=1002103
batgrbproduct Analysis for Trigger=1002103
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 Oct 28 09:17:40 EDT 2020
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger1002103/batgroup_hand_proc
======================================================================
Trigger: 01002103 Segment: 000
BAT Trigger Time: 625444680.064 [s; MET]
Trigger Stop: 625444681.088 [s; MET]
UTC: 2020-10-26T22:37:34.189480 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 196.664384320839 Dec: 83.7606316325239 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 6.67
Image Trigger?: NO
Rate S/N Ratio: 12.0415945787923 [ if not an image trigger ]
Image S/N Ratio: 6.67
Flight Position: [ source = BAT ]
RA: 196.664384320839 Dec: 83.7606316325239 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 196.695753347079 Dec: 83.8067632800032 [deg; J2000]
{ 13h 06m 47.0s , +83d 48' 24.3" }
+/- 1.2015919108709 [arcmin] (estimated 90% radius based on SNR)
+/- 0.458839366214649 [arcmin] (formal 1-sigma fit error)
SNR: 23.3980580590011
Angular difference between Flight and Ground position is 2.775392 arcmin
Partial Coding Fraction: 0.46875 [ including projection effects ]
Duration
T90: 135.379999995232 +/- 120.844469868601
Measured from: -13.0160000324249
to: 122.363999962807 [s; relative to TRIGTIME]
T50: 115.807999968529 +/- 194.710772899297
Measured from: -3.15200006961823
to: 112.655999898911 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.05200004577637
to: 2.05200004577637 [s; relative to TRIGTIME]
Total Fluence
Measured from: -16.0199999809265
to: 243.055999994278 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.352527 3.864635 2.142336 0.446803
0.112199 0.117298 0.104058 0.096227 [error]
Peak 0.069382 0.098973 0.076389 0.015694
0.011164 0.011838 0.010376 0.008841 [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 1.17e-06 1.66e-06 1.74e-06 3.38e-06 5.63e-06 7.95e-06 erg/cm2
Error 7.82e-08 6.62e-08 1.06e-07 4.37e-07 2.43e-07 5.25e-07 erg/cm2
Peak flux Power-law 6.94e-01 7.24e-01 5.34e-01 6.36e-01 2.20e+00 2.59e+00 ph/cm2/s
Error 1.56e-01 1.02e-01 8.36e-02 2.03e-01 2.90e-01 3.36e-01 ph/cm2/s
Fluence Cutoff-PL 1.11e-06 1.71e-06 1.75e-06 1.95e-06 5.45e-06 6.52e-06 erg/cm2
Error 9.43e-08 8.13e-08 1.12e-07 -------- 2.92e-07 1.00e-06 erg/cm2
Peak flux Cutoff-PL 6.29e-01 7.55e-01 5.63e-01 3.97e-01 2.16e+00 2.34e+00 ph/cm2/s
Error 1.92e-01 1.18e-01 1.00e-01 2.76e-01 2.99e-01 4.52e-01 ph/cm2/s
Fluence Band 1.08e-06 1.73e-06 1.70e-06 2.71e-06 5.45e-06 7.23e-06 erg/cm2
Error 1.01e-07 8.93e-08 1.21e-07 -------- 2.78e-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 1.928 0.078 - - 2.38e-03 1.04e-04 70.350 0
CPL 1.578 0.322 56.0 37.2 3.64e-03 1.45e-03 66.570 0
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.439 0.216 - - 1.79e-02 2.31e-03 61.100 0
CPL 0.960 0.796 115.3 -33.8 3.05e-02 3.76e-02 0.327 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: 127.104000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 259.076 -16.020 243.056
T90 135.380 -13.016 122.364
T50 115.808 -3.152 112.656
Peak 1.000 1.052 2.052
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
196.6958 +83.8068 0.0082 34.3 21.9 3.2683 23.4 TRIG_01002103
------------------------------------------
Foreground time interval of the image:
-16.020 13.637 (delta_t = 29.657 [sec])
Background time interval of the image:
-60.064 -16.020 (delta_t = 44.044 [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
-16.020000 235.376500
236.936000 243.056000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.92793 ( -0.0772729 0.0783278 )
Norm@50keV : 2.37870E-03 ( -0.00010475 0.000104066 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 70.35 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.10e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 257.5 sec: 0.345489 ( -0.0144133 0.0144526 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.63358e-06 ( -2.42714e-07 2.43857e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-16.020000 235.376500
236.936000 243.056000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.57762 ( -0.334726 0.308933 )
Epeak [keV] : 56.0323 ( -11.3107 63.159 )
Norm@50keV : 3.63633E-03 ( -0.00111068 0.00178501 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 66.57 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.58e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 257.5 sec: 0.337307 ( -0.015978 0.016008 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.44703e-06 ( -2.92159e-07 2.92597e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-16.020000 235.376500
236.936000 243.056000
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.31728 ( -0.433175 1.31582 )
beta : -2.14050 ( 2.13657 0.209157 )
Epeak [keV] : 45.8101 ( -23.8694 34.9767 )
Norm@50keV : 5.26270E-03 ( -0.00262722 220.015 )
------------------------------------------------------------
Photon flux (15-150 keV) in 257.5 sec: 0.335327 ( 6.66467 -0.016217 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.45133e-06 ( -5.44952e-06 -2.78589e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 11.5574 ( )
R^2/D10^2 : 8.87818E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 191.45 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.95e-16 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.433e-07 4.622e-08
25- 50 1.935e-06 8.935e-08
50-150 1.515e-06 1.491e-07
15-150 4.093e-06 1.931e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 82.8867 (-10.9264 13.7213)
Norm : 1.56986 (-0.102745 0.112428)
------------------------------------------------------------
#Fit statistic : Chi-Squared 68.29 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 1.45e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.051e-06 5.974e-08
25- 50 1.745e-06 6.837e-08
50-150 2.522e-06 2.306e-07
15-150 5.318e-06 2.704e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.45617 (-0.955107 0.999769)
R1^2/D10^2 : 0.566988 (-0.219168 0.445796)
kT2 [keV] : 21.7670 (-3.42265 5.19994)
R2^2/D10^2 : 5.81699E-03 (-0.0032617 0.00588688)
------------------------------------------------------------
#Fit statistic : Chi-Squared 72.13 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 6.04e-02 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.024e-06 1.371e-07
25- 50 1.732e-06 1.821e-07
50-150 2.581e-06 4.334e-07
15-150 5.337e-06 7.043e-07
Peak spectrum fit
Power-law model
Time interval is from 1.052 sec. to 2.052 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.43852 ( -0.215497 0.217356 )
Norm@50keV : 1.78863E-02 ( -0.00231605 0.00230926 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 61.10 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.31e-01 with 57 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 2.19806 ( -0.289739 0.290274 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.71525e-07 ( -2.41065e-08 2.42798e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 1.052 sec. to 2.052 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.960263 ( -1.0175 0.573661 )
Epeak [keV] : 115.273 ( -47.5723 -115.263 )
Norm@50keV : 3.05166E-02 ( -0.0144652 0.0607428 )
------------------------------------------------------------
#Fit statistic : Chi-Squared 60.19 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.27e-01 with 56 degrees of freedom
Photon flux (15-150 keV) in 1 sec: 2.15959 ( -0.29929 0.29816 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.67799e-07 ( -2.5346e-08 2.5325e-08 ) ergs/cm2
Band function
Time interval is from 1.052 sec. to 2.052 sec.
XSPEC12>exit
XSPEC: quit
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.961200 ( -0.351383 0.777933 )
beta : -10.00000 ( 10 20 )
Epeak [keV] : 115.364 ( -40.258 -115.364 )
Norm@50keV : 3.04848E-02 ( -0.00388534 0.00388534 )
------------------------------------------------------------
Photon flux (15-150 keV) in 1 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] : 16.6178 (-2.40848 2.8962)
R^2/D10^2 : 0.181789 (-0.0783132 0.13195)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared 71.32 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 9.61e-02 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.029e-08 2.651e-09
25- 50 4.468e-08 8.355e-09
50-150 8.743e-08 2.002e-08
15-150 1.424e-07 2.700e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-64.1557 -200)
Norm : 9.10681 (-1.16491 1.16491)
------------------------------------------------------------
#Fit statistic : Chi-Squared 61.34 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 3.23e-01 with 57 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.268e-08 1.260e-08
25- 50 4.363e-08 2.414e-08
50-150 9.568e-08 5.300e-08
15-150 1.620e-07 8.975e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.48257 (-2.5619 5.72929)
R1^2/D10^2 : 9.64473 (-8.56487 1041.64)
kT2 [keV] : 20.8052 (-4.42914 22.7226)
R2^2/D10^2 : 7.50445E-02 (-0.0664972 0.104864)
------------------------------------------------------------
#Fit statistic : Chi-Squared 60.81 using 59 bins.
Reduced chi-squared =
# Null hypothesis probability of 2.75e-01 with 55 degrees of freedom
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.100e-08 1.080e-08
25- 50 3.881e-08 1.486e-08
50-150 1.017e-07 4.301e-08
15-150 1.615e-07 5.386e-08
Plot creation:
Wed Oct 28 09:38:45 EDT 2020