batgrbproduct analysis for trigger=759159
batgrbproduct Analysis for Trigger=759159
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 v2.46
Process Start Time (local time): Fri Jun 30 18:32:26 EDT 2017
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger759159/GCN5_download_cron
======================================================================
Trigger: 00759159 Segment: 000
BAT Trigger Time: 520433632.448 [s; MET]
Trigger Stop: 520433633.472 [s; MET]
UTC: 2017-06-29T12:53:33.156640 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 130.01568696786 Dec: -46.5868423894367 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.01
Image Trigger?: NO
Rate S/N Ratio: 8.60232526704263 [ if not an image trigger ]
Image S/N Ratio: 7.01
Flight Position: [ source = BAT ]
RA: 130.01568696786 Dec: -46.5868423894367 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 129.962583703941 Dec: -46.5850904004587 [deg; J2000]
{ 08h 39m 51.0s , -46d 35' 06.3" }
+/- 1.32685151218155 [arcmin] (estimated 90% radius based on SNR)
+/- 0.515476502022406 [arcmin] (formal 1-sigma fit error)
SNR: 20.3075680638663
Angular difference between Flight and Ground position is 2.192284 arcmin
Partial Coding Fraction: 0.1796875 [ including projection effects ]
Duration
T90: 34.3959999084473 +/- 12.6738908029707
Measured from: 0.272000133991241
to: 34.6680000424385 [s; relative to TRIGTIME]
T50: 7.50399994850159 +/- 2.22771272673112
Measured from: 4.46000009775162
to: 11.9640000462532 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 4.96399998664856
to: 5.96399998664856 [s; relative to TRIGTIME]
Total Fluence
Measured from: -1.20800000429153
to: 39.3240000009537 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.109231 1.571545 1.066147 0.328928
0.094454 0.098275 0.084373 0.069423 [error]
Peak 0.113038 0.166635 0.149310 0.061915
0.020282 0.022185 0.019076 0.015542 [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 4.19e-07 6.99e-07 8.86e-07 2.25e-06 2.63e-06 4.25e-06 erg/cm2
Error 5.04e-08 5.19e-08 8.40e-08 4.50e-07 2.03e-07 5.17e-07 erg/cm2
Peak flux Power-law 1.19e+00 1.33e+00 1.05e+00 1.38e+00 4.09e+00 4.96e+00 ph/cm2/s
Error 3.03e-01 2.05e-01 1.56e-01 4.36e-01 5.64e-01 6.48e-01 ph/cm2/s
Fluence Cutoff-PL 4.03e-07 7.21e-07 9.00e-07 1.47e-06 2.58e-06 3.50e-06 erg/cm2
Error 5.80e-08 6.55e-08 8.96e-08 6.86e-07 2.25e-07 7.02e-07 erg/cm2
Peak flux Cutoff-PL 1.20e+00 1.33e+00 1.05e+00 1.36e+00 4.09e+00 4.95e+00 ph/cm2/s
Error 2.35e-01 2.06e-01 1.67e-01 -------- 5.58e-01 8.06e-01 ph/cm2/s
Fluence Band 3.72e-07 7.60e-07 8.69e-07 1.79e-06 2.56e-06 3.80e-06 erg/cm2
Error 6.34e-08 -------- 8.91e-08 -------- 2.13e-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 1.658 0.124 - - 6.98e-03 5.11e-04 69.870 57
CPL 1.388 0.439 110.1 -26.8 9.64e-03 5.84e-03 68.980 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.334 0.228 - - 3.40e-02 4.40e-03 63.640 57
CPL 1.334 0.499 9999.3 0.0 3.41e-02 3.88e-02 63.650 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: 16.320000 sec.
T50 in the 50-300 keV band: 5.888000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 40.532 -1.208 39.324
T90 34.396 0.272 34.668
T50 7.504 4.460 11.964
Peak 1.000 4.964 5.964
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
129.9626 -46.5851 0.0094 43.9 -129.7 2.9536 20.3 TRIG_00759159
------------------------------------------
Foreground time interval of the image:
-1.208 9.653 (delta_t = 10.861 [sec])
Background time interval of the image:
-239.448 -56.388 (delta_t = 183.060 [sec])
-55.448 -1.208 (delta_t = 54.240 [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 -1.208 sec. to 39.324 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.65785 ( -0.123152 0.12404 )
Norm@50keV : 6.97814E-03 ( -0.000512352 0.000510166 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.87 using 59 PHA bins.
# Reduced chi-squared = 1.226 for 57 degrees of freedom
# Null hypothesis probability = 1.177840e-01
Photon flux (15-150 keV) in 40.53 sec: 0.913547 ( -0.0677939 0.0679339 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.62833e-06 ( -2.02303e-07 2.03238e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -1.208 sec. to 39.324 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.38843 ( -0.542136 0.335067 )
Epeak [keV] : 110.143 ( -56.5982 -110.164 )
Norm@50keV : 9.64138E-03 ( -0.00306516 0.00860881 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.98 using 59 PHA bins.
# Reduced chi-squared = 1.232 for 56 degrees of freedom
# Null hypothesis probability = 1.142016e-01
Photon flux (15-150 keV) in 40.53 sec: 0.903274 ( -0.070286 0.070264 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.577e-06 ( -2.26749e-07 2.23823e-07 ) ergs/cm2
Band function
Time interval is from -1.208 sec. to 39.324 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.497283 ( -1.58339 0.482348 )
beta : -1.85964 ( -0.307593 0.228948 )
Epeak [keV] : 47.7516 ( -23.9817 76.2992 )
Norm@50keV : 3.50681E-02 ( -0.0380537 295.541 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.00 using 59 PHA bins.
# Reduced chi-squared = 1.200 for 55 degrees of freedom
# Null hypothesis probability = 1.472030e-01
Photon flux (15-150 keV) in 40.53 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 2.55569e-06 ( -2.55541e-06 -2.13095e-07 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 13.0742 (-1.11946 1.25562)
R^2/D10^2 : 0.162995 (-0.0470761 0.0644173)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 112.19 using 59 PHA bins.
# Reduced chi-squared = 1.9682 for 57 degrees of freedom
# Null hypothesis probability = 1.799496e-05
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.395e-07 3.425e-08
25- 50 8.299e-07 7.154e-08
50-150 8.998e-07 1.453e-07
15-150 1.969e-06 1.686e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 153.988 (-45.2039 -153.085)
Norm : 3.75212 (-0.306534 0.387799)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.97 using 59 PHA bins.
# Reduced chi-squared = 1.210 for 57 degrees of freedom
# Null hypothesis probability = 1.329017e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.897e-07 3.919e-08
25- 50 7.250e-07 1.384e-07
50-150 1.447e-06 6.186e-07
15-150 2.561e-06 6.848e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.03705 (-1.54444 1.50374)
R1^2/D10^2 : 0.506141 (-0.199352 0.238917)
kT2 [keV] : 44.4365 (-17.1456 124.564)
R2^2/D10^2 : 1.64479E-03 (-0.00137202 0.00630001)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.10 using 59 PHA bins.
# Reduced chi-squared = 1.184 for 55 degrees of freedom
# Null hypothesis probability = 1.653748e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.426e-07 6.876e-08
25- 50 8.097e-07 1.325e-07
50-150 1.464e-06 6.335e-07
15-150 2.616e-06 7.883e-07
Peak spectrum fit
Power-law model
Time interval is from 4.964 sec. to 5.964 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.33394 ( -0.230584 0.225441 )
Norm@50keV : 3.40336E-02 ( -0.00440263 0.00440206 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.64 using 59 PHA bins.
# Reduced chi-squared = 1.117 for 57 degrees of freedom
# Null hypothesis probability = 2.541291e-01
Photon flux (15-150 keV) in 1 sec: 4.08675 ( -0.562235 0.565338 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.33614e-07 ( -4.60437e-08 4.6348e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 4.964 sec. to 5.964 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.33400 ( -0.773524 0.224473 )
Epeak [keV] : 9999.34 ( -9999.36 -9999.36 )
Norm@50keV : 3.41479E-02 ( -0.0341528 0.0434052 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.65 using 59 PHA bins.
# Reduced chi-squared = 1.137 for 56 degrees of freedom
# Null hypothesis probability = 2.252779e-01
Photon flux (15-150 keV) in 1 sec: 4.08907 ( -0.55746 0.55911 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.33513e-07 ( -4.6857e-08 4.6256e-08 ) ergs/cm2
Band function
Time interval is from 4.964 sec. to 5.964 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.27797 ( -4.27832 -4.27832 )
beta : -1.40170 ( -0.320259 0.258558 )
Epeak [keV] : 26.0313 ( -26.0233 109.57 )
Norm@50keV : 732.453 ( -734.436 440.951 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.98 using 59 PHA bins.
# Reduced chi-squared = 1.145 for 55 degrees of freedom
# Null hypothesis probability = 2.147295e-01
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] : 17.4538 (-3.3572 4.60742)
R^2/D10^2 : 0.277377 (-0.274852 0.306135)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 83.14 using 59 PHA bins.
# Reduced chi-squared = 1.459 for 57 degrees of freedom
# Null hypothesis probability = 1.353316e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.708e-08 4.640e-09
25- 50 7.716e-08 1.820e-08
50-150 1.692e-07 4.115e-08
15-150 2.634e-07 5.340e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-50.139 -200)
Norm : 17.1658 (-2.24357 2.24357)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.94 using 59 PHA bins.
# Reduced chi-squared = 1.174 for 57 degrees of freedom
# Null hypothesis probability = 1.727086e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.276e-08 2.432e-08
25- 50 8.226e-08 4.569e-08
50-150 1.804e-07 1.003e-07
15-150 3.055e-07 1.692e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.60340 (-2.35167 2.81484)
R1^2/D10^2 : 2.29180 (-1.40338 4.58887)
kT2 [keV] : 42.6899 (-15.5466 121.582)
R2^2/D10^2 : 1.25998E-02 (-0.0107535 0.0396118)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.39 using 59 PHA bins.
# Reduced chi-squared = 1.116 for 55 degrees of freedom
# Null hypothesis probability = 2.577031e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.503e-08 1.858e-08
25- 50 8.334e-08 3.910e-08
50-150 2.239e-07 1.216e-07
15-150 3.423e-07 1.611e-07
Plot creation:
Fri Jun 30 18:42:46 EDT 2017