batgrbproduct Analysis for Trigger=614390
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): Sun Oct 5 18:36:23 EDT 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger614390/GCN5_download_cron
======================================================================
Trigger: 00614390 Segment: 000
BAT Trigger Time: 434157667.008 [s; MET]
Trigger Stop: 434157667.264 [s; MET]
UTC: 2014-10-04T23:20:54.395160 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 76.7295316221785 Dec: 12.8331117727635 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 19.75
Image Trigger?: NO
Rate S/N Ratio: 90.9615303301346 [ if not an image trigger ]
Image S/N Ratio: 19.75
Flight Position: [ source = BAT ]
RA: 76.7295316221785 Dec: 12.8331117727635 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 76.7209322831706 Dec: 12.8281132166112 [deg; J2000]
{ 05h 06m 53.0s , +12d 49' 41.2" }
+/- 0.811351481867156 [arcmin] (estimated 90% radius based on SNR)
+/- 0.245077352512107 [arcmin] (formal 1-sigma fit error)
SNR: 41.0033896637391
Angular difference between Flight and Ground position is 0.585692 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 3.91999995708466 +/- 1.07337229135984
Measured from: -0.339999914169312
to: 3.58000004291534 [s; relative to TRIGTIME]
T50: 1.13599997758865 +/- 0.173666344517265
Measured from: 0.096000075340271
to: 1.23200005292892 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.0559999942779541
to: 0.944000005722046 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.844000041484833
to: 5.34399998188019 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.439990 0.478080 0.271725 0.061464
0.016594 0.016941 0.013984 0.010879 [error]
Peak 0.236947 0.299572 0.184739 0.035129
0.008769 0.009489 0.007873 0.005121 [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 1.29e-07 1.91e-07 2.11e-07 4.39e-07 6.66e-07 9.71e-07 erg/cm2
Error 9.39e-09 8.45e-09 1.38e-08 6.05e-08 3.20e-08 7.22e-08 erg/cm2
Peak flux Power-law 2.29e+00 2.06e+00 1.27e+00 1.20e+00 6.12e+00 6.82e+00 ph/cm2/s
Error 1.54e-01 8.57e-02 6.53e-02 1.24e-01 2.51e-01 2.66e-01 ph/cm2/s
Fluence Cutoff-PL 1.23e-07 1.99e-07 2.12e-07 2.44e-07 6.43e-07 7.77e-07 erg/cm2
Error 1.11e-08 1.06e-08 1.47e-08 1.29e-07 3.79e-08 1.34e-07 erg/cm2
Peak flux Cutoff-PL 2.06e+00 2.16e+00 1.32e+00 6.46e-01 5.94e+00 6.19e+00 ph/cm2/s
Error 1.86e-01 1.03e-01 7.32e-02 1.95e-01 2.66e-01 3.36e-01 ph/cm2/s
Fluence Band 1.19e-07 2.01e-07 2.06e-07 3.53e-07 6.45e-07 8.81e-07 erg/cm2
Error 1.19e-08 -------- -------- -------- -------- -------- 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 1.858 0.083 - - 1.17e-02 5.59e-04 59.370 57
CPL 1.487 0.344 64.0 62.7 1.84e-02 7.93e-03 55.630 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.691 0.069 - - 4.62e-02 1.88e-03 77.900 57
CPL 1.110 0.302 75.0 19.4 9.16e-02 3.30e-02 65.440 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: 4.736000 sec.
T50 in the 50-300 keV band: 0.704000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 6.188 -0.844 5.344
T90 3.920 -0.340 3.580
T50 1.136 0.096 1.232
Peak 1.000 -0.056 0.944
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
76.7209 +12.8281 0.0047 13.2 174.9 1.2628 41.0 TRIG_00614390
------------------------------------------
Foreground time interval of the image:
-0.844 5.344 (delta_t = 6.188 [sec])
Background time interval of the image:
-102.507 -0.844 (delta_t = 101.663 [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 -0.844 sec. to 5.344 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.85771 ( -0.0822102 0.0832075 )
Norm@50keV : 1.17018E-02 ( -0.000561037 0.00055751 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.37 using 59 PHA bins.
# Reduced chi-squared = 1.041 for 57 degrees of freedom
# Null hypothesis probability = 3.894213e-01
Photon flux (15-150 keV) in 6.188 sec: 1.64997 ( -0.0750505 0.0751999 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.65748e-07 ( -3.19638e-08 3.21303e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.844 sec. to 5.344 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.48686 ( -0.358166 0.329037 )
Epeak [keV] : 64.0479 ( -13.1228 112.216 )
Norm@50keV : 1.84108E-02 ( -0.00596584 0.00990323 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.63 using 59 PHA bins.
# Reduced chi-squared = 0.9934 for 56 degrees of freedom
# Null hypothesis probability = 4.888115e-01
Photon flux (15-150 keV) in 6.188 sec: 1.61338 ( -0.08142 0.08143 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.42624e-07 ( -3.78477e-08 3.79448e-08 ) ergs/cm2
Band function
Time interval is from -0.844 sec. to 5.344 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.87268 ( -6.03737 -4.87268 )
beta : -1.91946 ( -0.0941945 0.0914709 )
Epeak [keV] : 22.1471 ( -3.17318 2.61213 )
Norm@50keV : 2863.76 ( -124.041 9204.69 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.10 using 59 PHA bins.
# Reduced chi-squared = 0.9836 for 55 degrees of freedom
# Null hypothesis probability = 5.089956e-01
Photon flux (15-150 keV) in 6.188 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 6.45025e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 11.8766 ( )
R^2/D10^2 : 0.392185 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 161.09 using 59 PHA bins.
# Reduced chi-squared = 2.8262 for 57 degrees of freedom
# Null hypothesis probability = 7.150148e-12
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.233e-08 5.971e-09
25- 50 2.249e-07 1.296e-08
50-150 1.894e-07 1.943e-08
15-150 4.866e-07 2.367e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 92.7509 (-13.9857 18.3024)
Norm : 7.32473 (-0.494354 0.545101)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.29 using 59 PHA bins.
# Reduced chi-squared = 0.9876 for 57 degrees of freedom
# Null hypothesis probability = 5.015445e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.184e-07 1.015e-08
25- 50 2.015e-07 9.499e-09
50-150 3.125e-07 8.577e-08
15-150 6.324e-07 8.512e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.25943 (-0.956221 1.08048)
R1^2/D10^2 : 2.92796 (-1.21638 2.4441)
kT2 [keV] : 21.1423 (-3.138 4.95598)
R2^2/D10^2 : 3.34638E-02 (-0.0186547 0.0307465)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.25 using 59 PHA bins.
# Reduced chi-squared = 1.077 for 55 degrees of freedom
# Null hypothesis probability = 3.234677e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.174e-07 1.983e-08
25- 50 1.992e-07 2.593e-08
50-150 3.119e-07 6.581e-08
15-150 6.285e-07 9.034e-08
Peak spectrum fit
Power-law model
Time interval is from -0.056 sec. to 0.944 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.69125 ( -0.0686841 0.0691565 )
Norm@50keV : 4.62350E-02 ( -0.00188413 0.0018792 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.90 using 59 PHA bins.
# Reduced chi-squared = 1.367 for 57 degrees of freedom
# Null hypothesis probability = 3.439059e-02
Photon flux (15-150 keV) in 1 sec: 6.12187 ( -0.251107 0.251493 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.2838e-07 ( -1.82275e-08 1.82908e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.056 sec. to 0.944 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.11028 ( -0.313848 0.291079 )
Epeak [keV] : 74.9941 ( -11.409 27.3484 )
Norm@50keV : 9.16104E-02 ( -0.0260429 0.0400199 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.44 using 59 PHA bins.
# Reduced chi-squared = 1.169 for 56 degrees of freedom
# Null hypothesis probability = 1.817789e-01
Photon flux (15-150 keV) in 1 sec: 5.94226 ( -0.26547 0.26562 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.10407e-07 ( -2.0414e-08 2.0382e-08 ) ergs/cm2
Band function
Time interval is from -0.056 sec. to 0.944 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.676684 ( -0.546654 0.984209 )
beta : -2.01691 ( -0.659783 0.195538 )
Epeak [keV] : 55.3088 ( -15.901 24.7139 )
Norm@50keV : 0.168758 ( -0.0890871 0.644924 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.59 using 59 PHA bins.
# Reduced chi-squared = 1.138 for 55 degrees of freedom
# Null hypothesis probability = 2.249295e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 4.11696e-07 ( -4.11689e-07 -1.9701e-08 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 13.4445 ( )
R^2/D10^2 : 0.983014 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 175.81 using 59 PHA bins.
# Reduced chi-squared = 3.0843 for 57 degrees of freedom
# Null hypothesis probability = 4.848083e-14
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.764e-08 2.690e-09
25- 50 1.344e-07 7.050e-09
50-150 1.565e-07 1.210e-08
15-150 3.285e-07 1.385e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 136.745 ( )
Norm : 25.4859 (-1.20973 1.48419)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.14 using 59 PHA bins.
# Reduced chi-squared = 1.160 for 57 degrees of freedom
# Null hypothesis probability = 1.906097e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.495e-08 4.360e-09
25- 50 1.193e-07 7.350e-09
50-150 2.291e-07 5.940e-08
15-150 4.133e-07 6.705e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.64675 (-1.21891 1.26158)
R1^2/D10^2 : 4.98280 (-1.8126 3.65791)
kT2 [keV] : 24.9039 (-4.15543 6.93043)
R2^2/D10^2 : 7.28256E-02 (-0.043481 0.0790473)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.90 using 59 PHA bins.
# Reduced chi-squared = 1.253 for 55 degrees of freedom
# Null hypothesis probability = 9.849028e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.870e-08 8.250e-09
25- 50 1.267e-07 1.365e-08
50-150 2.234e-07 4.440e-08
15-150 4.088e-07 5.970e-08
Plot creation:
Sun Oct 5 18:40:36 EDT 2014