batgrbproduct Analysis for Trigger=595162
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 Apr 9 05:03:24 EDT 2014
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger595162/GCN5_download_cron
======================================================================
Trigger: 00595162 Segment: 000
BAT Trigger Time: 418670512 [s; MET]
Trigger Stop: 418671352 [s; MET]
UTC: 2014-04-08T17:21:40.138260 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 113.599147353267 Dec: -50.4076924518858 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 5.86
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 5.86
Flight Position: [ source = BAT ]
RA: 113.599147353267 Dec: -50.4076924518858 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 113.596044537585 Dec: -50.4040890558855 [deg; J2000]
{ 07h 34m 23.1s , -50d 24' 14.7" }
+/- 4.25139801372963 [arcmin] (estimated 90% radius based on SNR)
+/- 2.88989759799428 [arcmin] (formal 1-sigma fit error)
SNR: 3.8478298386969
Angular difference between Flight and Ground position is 0.246623 arcmin
Partial Coding Fraction: 0.40625 [ including projection effects ]
Duration
T90: 840 +/-
Measured from: 0
to: 840 [s; relative to TRIGTIME]
T50: 840 +/-
Measured from: 0
to: 840 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 840 second)
Measured from: 0
to: 840 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 840 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.256188 1.221799 0.242490 -0.042397
0.272811 0.266400 0.220125 0.186484 [error]
Peak 1.256188 1.221799 0.242490 -0.042397
0.272811 0.266400 0.220125 0.186484 [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 5.26e-07 4.61e-07 2.78e-07 2.52e-07 1.37e-06 1.52e-06 erg/cm2
Error 1.52e-07 1.45e-07 1.69e-07 3.25e-07 4.34e-07 5.90e-07 erg/cm2
Peak flux Power-law 2.09e-02 1.02e-02 3.08e-03 1.17e-03 3.49e-02 3.54e-02 ph/cm2/s
Error 6.15e-03 3.10e-03 1.81e-03 1.43e-03 8.86e-03 9.05e-03 ph/cm2/s
Fluence Cutoff-PL 5.23e-07 5.41e-07 1.16e-07 2.59e-09 1.18e-06 1.18e-06 erg/cm2
Error 1.67e-07 2.02e-07 1.98e-07 1.38e-07 4.10e-07 5.19e-07 erg/cm2
Peak flux Cutoff-PL 2.03e-02 1.22e-02 1.43e-03 1.74e-05 3.40e-02 3.40e-02 ph/cm2/s
Error 6.69e-03 4.24e-03 2.20e-03 9.08e-04 8.69e-03 8.69e-03 ph/cm2/s
Fluence Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 erg/cm2
Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 erg/cm2
Peak flux Band 3.40e-02 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 ph/cm2/s
Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.733 0.572 - - 1.53e-04 7.00e-05 42.890 57
CPL 0.755 0.000 19.3 0.0 3.54e-03 0.00e+00 41.150 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.733 0.572 - - 1.53e-04 7.00e-05 42.890 57
CPL 0.755 0.000 19.3 0.0 3.54e-03 0.00e+00 41.150 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 840.000 0.000 840.000
T90 840.000 0.000 840.000
T50 840.000 0.000 840.000
Peak 840.000 0.000 840.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
113.5960 -50.4041 0.0498 44.2 -21.4 3.0185 3.8 TRIG_00595162
------------------------------------------
Foreground time interval of the image:
0.000 19.730 (delta_t = 19.730 [sec])
21.000 544.790 (delta_t = 523.790 [sec])
546.000 665.060 (delta_t = 119.060 [sec])
666.000 672.360 (delta_t = 6.360 [sec])
674.000 840.000 (delta_t = 166.000 [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
Multiple GTIs in the spectrum
tstart tstop
0.000000 19.730000
21.000000 544.790000
546.000000 665.060000
666.000000 672.360000
674.000000 840.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.73335 ( -0.506608 0.637108 )
Norm@50keV : 1.52753E-04 ( -6.84796e-05 7.14437e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.89 using 59 PHA bins.
# Reduced chi-squared = 0.7525 for 57 degrees of freedom
# Null hypothesis probability = 9.170458e-01
Photon flux (15-150 keV) in 834.9 sec: 3.48584E-02 ( -0.00885301 0.00885969 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.37294e-06 ( -4.17266e-07 4.51119e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 19.730000
21.000000 544.790000
546.000000 665.060000
666.000000 672.360000
674.000000 840.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.754942 ( )
Epeak [keV] : 19.2853 ( )
Norm@50keV : 3.54092E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.15 using 59 PHA bins.
# Reduced chi-squared = 0.7349 for 56 degrees of freedom
# Null hypothesis probability = 9.313662e-01
Photon flux (15-150 keV) in 834.9 sec: 3.39741E-02 ( -0.00864 0.0087368 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.1831e-06 ( -3.47828e-07 4.72011e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 19.730000
21.000000 544.790000
546.000000 665.060000
666.000000 672.360000
674.000000 840.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.71881 ( -7.6679 -4.71881 )
beta : -3.49306 ( 3.49306 0.960646 )
Epeak [keV] : 22.0786 ( -5.40124 5.15574 )
Norm@50keV : 71.6969 ( -17.6857 852017 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 40.63 using 59 PHA bins.
# Reduced chi-squared = 0.7387 for 55 degrees of freedom
# Null hypothesis probability = 9.260032e-01
Photon flux (15-150 keV) in 834.9 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] : 6.14068 (-1.43778 1.83317)
R^2/D10^2 : 0.119403 (-0.119368 0.271535)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.51 using 59 PHA bins.
# Reduced chi-squared = 0.7283 for 57 degrees of freedom
# Null hypothesis probability = 9.386847e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.160e-07 3.006e-07
25- 50 5.410e-07 3.325e-07
50-150 5.443e-08 4.469e-08
15-150 1.111e-06 6.775e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 23.2351 (-9.49151 18.6196)
Norm : 0.363854 (-0.161557 0.340098)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.35 using 59 PHA bins.
# Reduced chi-squared = 0.7255 for 57 degrees of freedom
# Null hypothesis probability = 9.408525e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.294e-07 2.020e-07
25- 50 5.169e-07 2.622e-07
50-150 1.970e-07 1.579e-07
15-150 1.243e-06 6.071e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.98612 (-4.98715 -4.98715)
R1^2/D10^2 : 0.228577 (-0.228468 -0.228468)
kT2 [keV] : 11.2174 (-11.2245 -11.2245)
R2^2/D10^2 : 3.45881E-03 (-0.00344716 0.330235)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 40.87 using 59 PHA bins.
# Reduced chi-squared = 0.7431 for 55 degrees of freedom
# Null hypothesis probability = 9.220284e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.352e-07 3.193e-07
25- 50 5.186e-07 3.806e-07
50-150 1.713e-07 1.420e-07
15-150 1.225e-06 7.765e-07
Peak spectrum fit
Power-law model
Time interval is from 674.000 sec. to 840.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.73335 ( -0.506608 0.637108 )
Norm@50keV : 1.52753E-04 ( -6.84796e-05 7.14437e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.89 using 59 PHA bins.
# Reduced chi-squared = 0.7525 for 57 degrees of freedom
# Null hypothesis probability = 9.170458e-01
Photon flux (15-150 keV) in 834.9 sec: 3.48584E-02 ( -0.00885301 0.00885969 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.37294e-06 ( -4.17266e-07 4.51119e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 674.000 sec. to 840.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.754942 ( )
Epeak [keV] : 19.2853 ( )
Norm@50keV : 3.54092E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.15 using 59 PHA bins.
# Reduced chi-squared = 0.7349 for 56 degrees of freedom
# Null hypothesis probability = 9.313662e-01
Photon flux (15-150 keV) in 834.9 sec: 3.39741E-02 ( -0.00864 0.0087368 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.1831e-06 ( -3.47828e-07 4.72011e-07 ) ergs/cm2
Band function
Time interval is from 674.000 sec. to 840.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.87222 ( -8.29603 -4.87222 )
beta : -3.48713 ( -4.98749 0.954992 )
Epeak [keV] : 22.0474 ( -22.0474 5.11894 )
Norm@50keV : 95.8973 ( -23.6559 851458 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 40.63 using 59 PHA bins.
# Reduced chi-squared = 0.7388 for 55 degrees of freedom
# Null hypothesis probability = 9.259641e-01
Photon flux (15-150 keV) in 834.9 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] : 6.14068 (-1.43778 1.83317)
R^2/D10^2 : 0.119403 (-0.119368 0.271535)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.51 using 59 PHA bins.
# Reduced chi-squared = 0.7283 for 57 degrees of freedom
# Null hypothesis probability = 9.386847e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.160e-07 3.055e-07
25- 50 5.410e-07 3.194e-07
50-150 5.443e-08 4.551e-08
15-150 1.111e-06 6.604e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 23.2351 (-9.49151 18.6196)
Norm : 0.363854 (-0.161557 0.340098)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.35 using 59 PHA bins.
# Reduced chi-squared = 0.7255 for 57 degrees of freedom
# Null hypothesis probability = 9.408525e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.294e-07 2.240e-07
25- 50 5.169e-07 2.605e-07
50-150 1.970e-07 1.638e-07
15-150 1.243e-06 5.413e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.98612 (-4.98715 -4.98715)
R1^2/D10^2 : 0.228577 (-0.228468 -0.228468)
kT2 [keV] : 11.2174 (-11.2245 -11.2245)
R2^2/D10^2 : 3.45881E-03 (-0.00344716 0.330235)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 40.87 using 59 PHA bins.
# Reduced chi-squared = 0.7431 for 55 degrees of freedom
# Null hypothesis probability = 9.220284e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.352e-07 3.580e-07
25- 50 5.186e-07 3.871e-07
50-150 1.713e-07 9.927e-08
15-150 1.225e-06 7.656e-07
Plot creation:
Wed Apr 9 05:30:21 EDT 2014