batgrbproduct Analysis for Trigger=609139
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): Mon Aug 11 01:44:04 EDT 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger609139/GCN5_download_cron
======================================================================
Trigger: 00609139 Segment: 000
BAT Trigger Time: 429370944 [s; MET]
Trigger Stop: 429372200 [s; MET]
UTC: 2014-08-10T13:42:11.622240 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 282.079870877355 Dec: -2.44387500884229 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 8.11
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 8.11
Flight Position: [ source = BAT ]
RA: 282.079870877355 Dec: -2.44387500884229 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 282.074839039174 Dec: -2.43568090838448 [deg; J2000]
{ 18h 48m 18.0s , -02d 26' 08.5" }
+/- 3.64409016455832 [arcmin] (estimated 90% radius based on SNR)
+/- 2.63396151049063 [arcmin] (formal 1-sigma fit error)
SNR: 4.7956581439316
Angular difference between Flight and Ground position is 0.576802 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 1256 +/-
Measured from: 0
to: 1256 [s; relative to TRIGTIME]
T50: 1256 +/-
Measured from: 0
to: 1256 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 1256 second)
Measured from: 0
to: 1256 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 1256 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.678418 0.481945 0.101136 -0.128167
0.131129 0.123660 0.109227 0.109189 [error]
Peak 0.678418 0.481945 0.101136 -0.128167
0.131129 0.123660 0.109227 0.109189 [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 1.78e-07 1.79e-07 1.26e-07 1.41e-07 5.38e-07 6.25e-07 erg/cm2
Error 5.22e-08 5.59e-08 7.26e-08 1.74e-07 1.83e-07 2.74e-07 erg/cm2
Peak flux Power-law 1.15e-02 6.43e-03 2.27e-03 1.05e-03 2.07e-02 2.12e-02 ph/cm2/s
Error 3.43e-03 1.95e-03 1.27e-03 1.22e-03 5.52e-03 5.74e-03 ph/cm2/s
Fluence Cutoff-PL 1.83e-07 2.19e-07 3.39e-08 2.03e-10 4.37e-07 4.36e-07 erg/cm2
Error 6.19e-08 9.50e-08 7.74e-08 3.26e-08 1.59e-07 1.91e-07 erg/cm2
Peak flux Cutoff-PL 1.15e-02 8.10e-03 6.99e-04 2.13e-06 2.03e-02 2.03e-02 ph/cm2/s
Error 3.92e-03 3.16e-03 1.43e-03 2.89e-04 5.29e-03 5.29e-03 ph/cm2/s
Fluence Band 1.78e-07 2.24e-07 5.94e-08 7.66e-10 4.69e-07 4.65e-07 erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Band 1.14e-02 8.16e-03 7.85e-04 5.11e-06 2.03e-02 2.03e-02 ph/cm2/s
Error -------- -------- -------- -------- 5.20e-03 5.20e-03 ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.509 0.526 - - 1.05e-04 4.60e-05 57.660 57
CPL -0.416 0.992 25.1 0.0 1.12e-02 0.00e+00 53.610 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.509 0.526 - - 1.05e-04 4.60e-05 57.660 57
CPL -0.416 0.992 25.1 0.0 1.12e-02 0.00e+00 53.610 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 1256.000 0.000 1256.000
T90 1256.000 0.000 1256.000
T50 1256.000 0.000 1256.000
Peak 1256.000 0.000 1256.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
282.0748 -2.4357 0.0403 3.0 30.5 1.5829 4.8 TRIG_00609139
------------------------------------------
Foreground time interval of the image:
119.000 123.040 (delta_t = 4.040 [sec])
167.000 237.120 (delta_t = 70.120 [sec])
238.000 303.108 (delta_t = 65.108 [sec])
592.000 963.084 (delta_t = 371.084 [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
Multiple GTIs in the spectrum
tstart tstop
119.000000 123.040000
167.000000 237.120000
238.000000 303.107900
592.000000 963.083700
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.50881 ( -0.474203 0.577299 )
Norm@50keV : 1.05012E-04 ( -4.47064e-05 4.73544e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.66 using 59 PHA bins.
# Reduced chi-squared = 1.012 for 57 degrees of freedom
# Null hypothesis probability = 4.506256e-01
Photon flux (15-150 keV) in 510.4 sec: 2.07485E-02 ( -0.005499 0.0055331 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.3789e-07 ( -1.73884e-07 1.92984e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
119.000000 123.040000
167.000000 237.120000
238.000000 303.107900
592.000000 963.083700
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.416002 ( 0.454184 2.43768 )
Epeak [keV] : 25.1469 ( )
Norm@50keV : 1.12073E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.61 using 59 PHA bins.
# Reduced chi-squared = 0.9573 for 56 degrees of freedom
# Null hypothesis probability = 5.658942e-01
Photon flux (15-150 keV) in 510.4 sec: 2.02995E-02 ( -0.0052491 0.0053306 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.36587e-07 ( -1.39228e-07 1.79675e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
119.000000 123.040000
167.000000 237.120000
238.000000 303.107900
592.000000 963.083700
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -6.37831 -5 )
beta : -3.43178 ( 3.43477 0.948978 )
Epeak [keV] : 22.8354 ( -4.70198 4.84527 )
Norm@50keV : 58.0443 ( -14.2635 222.89 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.18 using 59 PHA bins.
# Reduced chi-squared = 0.9488 for 55 degrees of freedom
# Null hypothesis probability = 5.830047e-01
Photon flux (15-150 keV) in 510.4 sec: 2.03420E-02 ( 6.97966 -0.0051365 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.69388e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.52294 (-1.44993 1.94279)
R^2/D10^2 : 5.68256E-02 (-0.0378355 0.108569)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.63 using 59 PHA bins.
# Reduced chi-squared = 0.9409 for 57 degrees of freedom
# Null hypothesis probability = 6.021673e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.831e-07 1.043e-07
25- 50 2.179e-07 1.141e-07
50-150 2.777e-08 2.279e-08
15-150 4.288e-07 2.498e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 28.3354 (-11.6937 24.054)
Norm : 0.181702 (-0.0735138 0.136787)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.77 using 59 PHA bins.
# Reduced chi-squared = 0.9609 for 57 degrees of freedom
# Null hypothesis probability = 5.592463e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.831e-07 7.368e-08
25- 50 2.026e-07 1.103e-07
50-150 1.028e-07 8.101e-08
15-150 4.885e-07 2.442e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 12.2202 ( )
R1^2/D10^2 : 1.41107E-03 (-0.00138217 0.147177)
kT2 [keV] : 5.55111 (-5.55261 3.78024)
R2^2/D10^2 : 8.86647E-02 (-0.0886619 -0.0886619)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.19 using 59 PHA bins.
#Fit statistic : Chi-Squared = 53.13 using 59 PHA bins.
# Reduced chi-squared = 0.9671 for 55 degrees of freedom
# Reduced chi-squared = 0.9660 for 55 degrees of freedom
# Null hypothesis probability = 5.441290e-01
# Null hypothesis probability = 5.464430e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.867e-07 1.989e-07
25- 50 2.134e-07 1.960e-07
50-150 6.653e-08 7.194e-08
15-150 4.666e-07 5.158e-07
Peak spectrum fit
Power-law model
Time interval is from 592.000 sec. to 963.084 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.50881 ( -0.474203 0.577299 )
Norm@50keV : 1.05012E-04 ( -4.47064e-05 4.73544e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.66 using 59 PHA bins.
# Reduced chi-squared = 1.012 for 57 degrees of freedom
# Null hypothesis probability = 4.506256e-01
Photon flux (15-150 keV) in 510.4 sec: 2.07485E-02 ( -0.005499 0.0055331 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.3789e-07 ( -1.73884e-07 1.92984e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 592.000 sec. to 963.084 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.416002 ( 0.454184 2.43768 )
Epeak [keV] : 25.1469 ( )
Norm@50keV : 1.12073E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.61 using 59 PHA bins.
# Reduced chi-squared = 0.9573 for 56 degrees of freedom
# Null hypothesis probability = 5.658942e-01
Photon flux (15-150 keV) in 510.4 sec: 2.02995E-02 ( -0.0052491 0.0053306 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.36587e-07 ( -1.39228e-07 1.79675e-07 ) ergs/cm2
Band function
Time interval is from 592.000 sec. to 963.084 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -6.42802 -5 )
beta : -3.43178 ( 3.43477 0.948978 )
Epeak [keV] : 22.8354 ( -4.70198 4.84527 )
Norm@50keV : 58.0443 ( -14.2635 222.89 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.18 using 59 PHA bins.
# Reduced chi-squared = 0.9488 for 55 degrees of freedom
# Null hypothesis probability = 5.830047e-01
Photon flux (15-150 keV) in 510.4 sec: 2.03420E-02 ( 6.97966 -0.0051365 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.69388e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.52294 (-1.44993 1.94279)
R^2/D10^2 : 5.68256E-02 (-0.0378355 0.108569)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.63 using 59 PHA bins.
# Reduced chi-squared = 0.9409 for 57 degrees of freedom
# Null hypothesis probability = 6.021673e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.831e-07 1.077e-07
25- 50 2.179e-07 1.268e-07
50-150 2.777e-08 2.278e-08
15-150 4.288e-07 2.314e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 28.3354 (-11.6937 24.054)
Norm : 0.181702 (-0.0735138 0.136787)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.77 using 59 PHA bins.
# Reduced chi-squared = 0.9609 for 57 degrees of freedom
# Null hypothesis probability = 5.592463e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.831e-07 7.947e-08
25- 50 2.026e-07 1.059e-07
50-150 1.028e-07 8.376e-08
15-150 4.885e-07 2.260e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 12.2202 ( )
R1^2/D10^2 : 1.41107E-03 (-0.00138217 0.147177)
kT2 [keV] : 5.55111 (-5.55261 3.78024)
R2^2/D10^2 : 8.86647E-02 (-0.0886619 -0.0886619)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.19 using 59 PHA bins.
#Fit statistic : Chi-Squared = 53.13 using 59 PHA bins.
# Reduced chi-squared = 0.9671 for 55 degrees of freedom
# Reduced chi-squared = 0.9660 for 55 degrees of freedom
# Null hypothesis probability = 5.441290e-01
# Null hypothesis probability = 5.464430e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.867e-07 1.548e-07
25- 50 2.134e-07 2.935e-07
50-150 6.653e-08 8.485e-08
15-150 4.666e-07 4.096e-07
Plot creation:
Mon Aug 11 01:59:39 EDT 2014