batgrbproduct Analysis for Trigger=730513
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): Sat Jan 7 04:57:21 EST 2017
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger730513/GCN5_download_cron
======================================================================
Trigger: 00730513 Segment: 000
BAT Trigger Time: 505384280 [s; MET]
Trigger Stop: 505384368 [s; MET]
UTC: 2017-01-06T08:31:01.581180 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 325.782901344549 Dec: 43.4215071867016 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 5.88
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 5.88
Flight Position: [ source = BAT ]
RA: 325.782901344549 Dec: 43.4215071867016 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 325.617990336035 Dec: 43.6153120404979 [deg; J2000]
{ 21h 42m 28.3s , +43d 36' 55.1" }
+/- 5.51172655614264 [arcmin] (estimated 90% radius based on SNR)
+/- 4.24121479394275 [arcmin] (formal 1-sigma fit error)
SNR: 2.65543700759238
Angular difference between Flight and Ground position is 13.663808 arcmin
Partial Coding Fraction: 0.9921875 [ including projection effects ]
Duration
T90: 88 +/-
Measured from: 0
to: 88 [s; relative to TRIGTIME]
T50: 88 +/-
Measured from: 0
to: 88 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 88 second)
Measured from: 0
to: 88 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 88 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.228246 0.126707 -0.018501 -0.021136
0.055940 0.057325 0.049451 0.042715 [error]
Peak 0.228246 0.126707 -0.018501 -0.021136
0.055940 0.057325 0.049451 0.042715 [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 4.72e-08 4.65e-08 3.20e-08 3.49e-08 1.40e-07 1.63e-07 erg/cm2
Error 2.22e-08 2.49e-08 3.44e-08 7.07e-08 8.05e-08 1.22e-07 erg/cm2
Peak flux Power-law 1.77e-02 9.73e-03 3.37e-03 1.52e-03 3.16e-02 3.23e-02 ph/cm2/s
Error 8.43e-03 5.04e-03 3.51e-03 2.80e-03 1.42e-02 1.49e-02 ph/cm2/s
Fluence Cutoff-PL 5.23e-08 6.21e-08 3.53e-09 7.66e-13 1.18e-07 1.18e-07 erg/cm2
Error 2.80e-08 5.11e-08 2.00e-08 4.76e-09 5.74e-08 5.41e-08 erg/cm2
Peak flux Cutoff-PL 1.87e-02 1.37e-02 4.47e-04 5.23e-08 3.29e-02 3.29e-02 ph/cm2/s
Error 1.03e-02 1.08e-02 2.19e-03 2.63e-04 1.32e-02 1.32e-02 ph/cm2/s
Fluence Band 5.15e-08 6.25e-08 3.95e-09 2.47e-11 1.18e-07 1.18e-07 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 2.566 0.893 - - 1.54e-04 1.14e-04 60.120 57
CPL -3.633 0.000 26.0 0.0 4.12e+00 0.00e+00 56.260 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.566 0.893 - - 1.54e-04 1.14e-04 60.120 57
CPL -3.633 0.000 26.0 0.0 4.12e+00 0.00e+00 56.260 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 88.000 0.000 88.000
T90 88.000 0.000 88.000
T50 88.000 0.000 88.000
Peak 88.000 0.000 88.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
325.6180 +43.6153 0.0722 14.8 163.1 0.2922 2.7 TRIG_00730513
------------------------------------------
Foreground time interval of the image:
0.000 88.000 (delta_t = 88.000 [sec])
Background time interval of the image:
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 0.000 sec. to 88.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.56557 ( -0.722284 1.06331 )
Norm@50keV : 1.53516E-04 ( -0.000103392 0.000125124 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.12 using 59 PHA bins.
# Reduced chi-squared = 1.055 for 57 degrees of freedom
# Null hypothesis probability = 3.635568e-01
Photon flux (15-150 keV) in 88 sec: 3.15767E-02 ( -0.0141437 0.014331 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.39573e-07 ( -7.28464e-08 8.80607e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 88.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -3.63294 ( )
Epeak [keV] : 25.9876 ( )
Norm@50keV : 4.12083 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.26 using 59 PHA bins.
# Reduced chi-squared = 1.005 for 56 degrees of freedom
# Null hypothesis probability = 4.652998e-01
Photon flux (15-150 keV) in 88 sec: 3.28710E-02 ( -0.0131794 0.0132525 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.17934e-07 ( -5.37147e-08 6.10438e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 88.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 3.37382 ( -4.56584 -3.35417 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 26.0495 ( -7.03061 9.09603 )
Norm@50keV : 2.62438 ( -2.6245 83.4133 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.27 using 59 PHA bins.
# Reduced chi-squared = 1.023 for 55 degrees of freedom
# Null hypothesis probability = 4.272526e-01
Photon flux (15-150 keV) in 88 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.18405e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.60824 (-2.03623 2.76207)
R^2/D10^2 : 8.93117E-02 (-0.0893163 0.322461)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.54 using 59 PHA bins.
# Reduced chi-squared = 0.9920 for 57 degrees of freedom
# Null hypothesis probability = 4.922162e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.173e-08 3.191e-08
25- 50 6.320e-08 4.230e-08
50-150 8.464e-09 7.885e-09
15-150 1.234e-07 7.872e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 25.6922 (-13.7413 43.3308)
Norm : 0.309718 (-0.176572 0.426429)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.38 using 59 PHA bins.
# Reduced chi-squared = 1.024 for 57 degrees of freedom
# Null hypothesis probability = 4.245264e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.079e-08 3.187e-08
25- 50 5.297e-08 3.309e-08
50-150 2.344e-08 2.374e-08
15-150 1.272e-07 8.655e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.57515 (-6.58465 193.387)
R1^2/D10^2 : 7.14502E-02 (-0.0713915 -0.0713915)
kT2 [keV] : 6.70003 (-6.63522 193.357)
R2^2/D10^2 : 1.82528E-02 (-0.018151 -0.018151)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.54 using 59 PHA bins.
# Reduced chi-squared = 1.028 for 55 degrees of freedom
# Null hypothesis probability = 4.171631e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.177e-08 1.684e-01
25- 50 6.312e-08 1.463e+00
50-150 8.429e-09 3.769e+01
15-150 1.233e-07 3.953e+01
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 88.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.56557 ( -0.722284 1.06331 )
Norm@50keV : 1.53516E-04 ( -0.000103392 0.000125124 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.12 using 59 PHA bins.
# Reduced chi-squared = 1.055 for 57 degrees of freedom
# Null hypothesis probability = 3.635568e-01
Photon flux (15-150 keV) in 88 sec: 3.15767E-02 ( -0.0141437 0.014331 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.39573e-07 ( -7.28464e-08 8.80607e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 88.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -3.63294 ( )
Epeak [keV] : 25.9876 ( )
Norm@50keV : 4.12083 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.26 using 59 PHA bins.
# Reduced chi-squared = 1.005 for 56 degrees of freedom
# Null hypothesis probability = 4.652998e-01
Photon flux (15-150 keV) in 88 sec: 3.28710E-02 ( -0.0131794 0.0132525 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.17934e-07 ( -5.37147e-08 6.10438e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 88.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 3.37382 ( -4.56584 -3.35417 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 26.0495 ( -7.03061 9.09603 )
Norm@50keV : 2.62438 ( -2.6245 83.4128 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.27 using 59 PHA bins.
# Reduced chi-squared = 1.023 for 55 degrees of freedom
# Null hypothesis probability = 4.272526e-01
Photon flux (15-150 keV) in 88 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.18405e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.60824 (-2.03623 2.76207)
R^2/D10^2 : 8.93117E-02 (-0.0893163 0.322461)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.54 using 59 PHA bins.
# Reduced chi-squared = 0.9920 for 57 degrees of freedom
# Null hypothesis probability = 4.922162e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.173e-08 3.153e-08
25- 50 6.320e-08 4.148e-08
50-150 8.464e-09 7.872e-09
15-150 1.234e-07 8.193e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 25.6922 (-13.7413 43.3308)
Norm : 0.309718 (-0.176572 0.426429)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.38 using 59 PHA bins.
# Reduced chi-squared = 1.024 for 57 degrees of freedom
# Null hypothesis probability = 4.245264e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.079e-08 3.230e-08
25- 50 5.297e-08 3.652e-08
50-150 2.344e-08 2.403e-08
15-150 1.272e-07 8.888e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.57515 (-6.58465 193.387)
R1^2/D10^2 : 7.14502E-02 (-0.0713915 -0.0713915)
kT2 [keV] : 6.70003 (-6.63522 193.357)
R2^2/D10^2 : 1.82528E-02 (-0.018151 -0.018151)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.54 using 59 PHA bins.
# Reduced chi-squared = 1.028 for 55 degrees of freedom
# Null hypothesis probability = 4.171631e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.177e-08 1.667e-01
25- 50 6.312e-08 1.422e+00
50-150 8.429e-09 4.049e+01
15-150 1.233e-07 3.849e+01
Plot creation:
Sat Jan 7 05:03:49 EST 2017