batgrbproduct Analysis for Trigger=671014
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 10 downlinks after the trigger.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time (local time): Wed Jan 20 01:18:42 EST 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger671014/GCN5_download_cron
======================================================================
Trigger: 00671014 Segment: 000
BAT Trigger Time: 474865584 [s; MET]
Trigger Stop: 474865672 [s; MET]
UTC: 2016-01-19T03:06:08.282120 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 211.892936150736 Dec: 20.474466794798 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 10.54
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 10.54
Flight Position: [ source = BAT ]
RA: 211.892936150736 Dec: 20.474466794798 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 211.915744336371 Dec: 20.452533872918 [deg; J2000]
{ 14h 07m 39.8s , +20d 27' 09.1" }
+/- 2.03229277973184 [arcmin] (estimated 90% radius based on SNR)
+/- 1.01407523171009 [arcmin] (formal 1-sigma fit error)
SNR: 11.0442947420024
Angular difference between Flight and Ground position is 1.837296 arcmin
Partial Coding Fraction: 0.7734375 [ including projection effects ]
Duration
T90: 120.171999931335 +/- 14.9228180919667
Measured from: 54.0920001268387
to: 174.264000058174 [s; relative to TRIGTIME]
T50: 21.2599999904633 +/- 1.2861974563825
Measured from: 133.960000097752
to: 155.220000088215 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 146.055999994278
to: 147.055999994278 [s; relative to TRIGTIME]
Total Fluence
Measured from: 32.6200000047684
to: 200.227999985218 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.771822 4.422172 3.050756 0.727474
0.091607 0.095524 0.083853 0.072503 [error]
Peak 0.091487 0.136149 0.104283 0.021933
0.007617 0.008600 0.007433 0.005712 [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-06 1.93e-06 2.38e-06 5.82e-06 7.13e-06 1.13e-05 erg/cm2
Error 6.54e-08 5.99e-08 8.77e-08 4.93e-07 2.07e-07 5.40e-07 erg/cm2
Peak flux Power-law 9.96e-01 9.80e-01 6.74e-01 7.31e-01 2.94e+00 3.38e+00 ph/cm2/s
Error 1.17e-01 7.25e-02 6.04e-02 1.31e-01 2.10e-01 2.38e-01 ph/cm2/s
Fluence Cutoff-PL 1.18e-06 1.93e-06 2.38e-06 5.77e-06 7.13e-06 1.13e-05 erg/cm2
Error 5.92e-08 5.94e-08 8.70e-08 6.47e-07 2.02e-07 7.86e-07 erg/cm2
Peak flux Cutoff-PL 9.00e-01 1.03e+00 7.09e-01 4.14e-01 2.88e+00 3.05e+00 ph/cm2/s
Error 1.41e-01 8.65e-02 6.96e-02 2.07e-01 2.16e-01 2.99e-01 ph/cm2/s
Fluence Band -------- -------- -------- -------- -------- -------- erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Band 9.16e-01 1.02e+00 7.05e-01 4.62e-01 2.89e+00 3.10e+00 ph/cm2/s
Error 1.40e-01 -------- -------- -------- -------- -------- ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.694 0.056 - - 4.59e-03 1.29e-04 46.510 57
CPL 1.695 0.066 9999.4 -0.0 4.60e-03 3.17e-04 46.530 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.539 0.118 - - 2.33e-02 1.68e-03 63.630 57
CPL 0.987 0.496 93.2 110.3 4.41e-02 2.67e-02 59.480 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: 41.344000 sec.
T50 in the 50-300 keV band: 15.680000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 167.608 32.620 200.228
T90 120.172 54.092 174.264
T50 21.260 133.960 155.220
Peak 1.000 146.056 147.056
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
211.9157 +20.4525 0.0173 30.3 -178.0 1.3950 11.0 TRIG_00671014
------------------------------------------
Foreground time interval of the image:
32.620 95.301 (delta_t = 62.681 [sec])
Background time interval of the image:
-239.000 -219.000 (delta_t = 20.000 [sec])
-218.000 32.620 (delta_t = 250.620 [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
Time interval is from 32.620 sec. to 200.228 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.69393 ( -0.0555622 0.0558132 )
Norm@50keV : 4.59208E-03 ( -0.000128678 0.00012852 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.51 using 59 PHA bins.
# Reduced chi-squared = 0.8159 for 57 degrees of freedom
# Null hypothesis probability = 8.381574e-01
Photon flux (15-150 keV) in 167.6 sec: 0.608591 ( -0.0190833 0.0191678 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.12934e-06 ( -2.06976e-07 2.07477e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 32.620 sec. to 200.228 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.69451 ( -0.0774099 0.0546766 )
Epeak [keV] : 9999.36 ( -9999.35 -9999.36 )
Norm@50keV : 4.59677E-03 ( -0.000128519 0.000505366 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.53 using 59 PHA bins.
# Reduced chi-squared = 0.8310 for 56 degrees of freedom
# Null hypothesis probability = 8.123347e-01
Photon flux (15-150 keV) in 167.6 sec: 0.609093 ( -0.019993 0.018355 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.12841e-06 ( -1.99092e-07 2.05226e-07 ) ergs/cm2
Band function
Time interval is from 32.620 sec. to 200.228 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.27763 ( 1.27675 1.27675 )
beta : -1.69588 ( -0.0607468 0.0569938 )
Epeak [keV] : 38.2131 ( -38.0554 -38.0554 )
Norm@50keV : 9.81533E-03 ( -0.00526457 0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.47 using 59 PHA bins.
# Reduced chi-squared = 0.8448 for 55 degrees of freedom
# Null hypothesis probability = 7.868347e-01
Photon flux (15-150 keV) in 167.6 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] : 14.8346 ( )
R^2/D10^2 : 6.41346E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 385.52 using 59 PHA bins.
# Reduced chi-squared = 6.7636 for 57 degrees of freedom
# Null hypothesis probability = 2.694987e-50
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.961e-07 2.891e-08
25- 50 1.951e-06 7.374e-08
50-150 2.908e-06 1.684e-07
15-150 5.355e-06 1.768e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 158.154 (-22.33 26.8647)
Norm : 2.43527 (-0.0862337 0.0977143)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.93 using 59 PHA bins.
# Reduced chi-squared = 1.069 for 57 degrees of freedom
# Null hypothesis probability = 3.365454e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.043e-06 5.648e-08
25- 50 1.949e-06 1.123e-07
50-150 3.929e-06 9.453e-07
15-150 6.921e-06 9.830e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.95067 (-0.721651 0.765469)
R1^2/D10^2 : 0.720477 (-0.225023 0.368651)
kT2 [keV] : 27.5942 (-2.94911 3.95754)
R2^2/D10^2 : 5.56992E-03 (-0.00209299 0.00286105)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.28 using 59 PHA bins.
# Reduced chi-squared = 1.187 for 55 degrees of freedom
# Null hypothesis probability = 1.616653e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.047e-06 9.201e-08
25- 50 1.952e-06 9.888e-08
50-150 4.050e-06 3.486e-07
15-150 7.049e-06 4.089e-07
Peak spectrum fit
Power-law model
Time interval is from 146.056 sec. to 147.056 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.53907 ( -0.117529 0.119002 )
Norm@50keV : 2.33119E-02 ( -0.0016795 0.00167267 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.63 using 59 PHA bins.
# Reduced chi-squared = 1.116 for 57 degrees of freedom
# Null hypothesis probability = 2.545581e-01
Photon flux (15-150 keV) in 1 sec: 2.94190 ( -0.209449 0.209647 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.19809e-07 ( -1.71182e-08 1.72126e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 146.056 sec. to 147.056 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.986866 ( -0.523609 0.467469 )
Epeak [keV] : 93.1847 ( -23.9346 196.707 )
Norm@50keV : 4.41115E-02 ( -0.0180426 0.0353937 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.48 using 59 PHA bins.
# Reduced chi-squared = 1.062 for 56 degrees of freedom
# Null hypothesis probability = 3.501983e-01
Photon flux (15-150 keV) in 1 sec: 2.87924 ( -0.21617 0.2161 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.12869e-07 ( -1.83e-08 1.8317e-08 ) ergs/cm2
Band function
Time interval is from 146.056 sec. to 147.056 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.986803 ( -0.364108 0.569353 )
beta : -10.0000 ( 10 0 )
Epeak [keV] : 93.1637 ( -19.5275 197.522 )
Norm@50keV : 4.41115E-02 ( -0.0180486 0.0353402 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.48 using 59 PHA bins.
# Reduced chi-squared = 1.081 for 55 degrees of freedom
# Null hypothesis probability = 3.159412e-01
Photon flux (15-150 keV) in 1 sec: 2.89340 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.14063e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 15.0057 (-1.24202 1.36842)
R^2/D10^2 : 0.336921 (-0.0898156 0.120659)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 98.25 using 59 PHA bins.
# Reduced chi-squared = 1.724 for 57 degrees of freedom
# Null hypothesis probability = 5.659264e-04
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.588e-08 2.090e-09
25- 50 6.313e-08 6.010e-09
50-150 9.676e-08 1.310e-08
15-150 1.758e-07 1.530e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 (-54.9928 -199.363)
Norm : 12.0497 (-0.835597 0.836099)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.44 using 59 PHA bins.
# Reduced chi-squared = 1.060 for 57 degrees of freedom
# Null hypothesis probability = 3.526149e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.001e-08 2.430e-09
25- 50 5.772e-08 5.505e-09
50-150 1.266e-07 3.216e-08
15-150 2.143e-07 4.310e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.20850 (-1.78488 2.20665)
R1^2/D10^2 : 4.10078 (-2.5557 11.6439)
kT2 [keV] : 22.1776 (-3.68403 6.5484)
R2^2/D10^2 : 6.91123E-02 (-0.0439739 0.0719626)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.26 using 59 PHA bins.
# Reduced chi-squared = 1.096 for 55 degrees of freedom
# Null hypothesis probability = 2.912181e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.829e-08 9.840e-09
25- 50 5.694e-08 1.658e-08
50-150 1.249e-07 3.758e-08
15-150 2.101e-07 5.330e-08
Plot creation:
Wed Jan 20 01:23:55 EST 2016