batgrbproduct Analysis for Trigger=595345
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): Fri Apr 11 05:52:05 EDT 2014
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger595345/GCN5_download_cron
======================================================================
Trigger: 00595345 Segment: 000
BAT Trigger Time: 418843240 [s; MET]
Trigger Stop: 418843304 [s; MET]
UTC: 2014-04-10T17:20:28.130020 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 187.132260568424 Dec: 3.47989197156627 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 6.51
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 6.51
Flight Position: [ source = BAT ]
RA: 187.132260568424 Dec: 3.47989197156627 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 187.161008901795 Dec: 3.46285178280255 [deg; J2000]
{ 12h 28m 38.6s , +03d 27' 46.3" }
+/- 3.39479016369799 [arcmin] (estimated 90% radius based on SNR)
+/- 2.18120717131886 [arcmin] (formal 1-sigma fit error)
SNR: 5.30657353670037
Angular difference between Flight and Ground position is 2.002423 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 64 +/-
Measured from: 0
to: 64 [s; relative to TRIGTIME]
T50: 64 +/-
Measured from: 0
to: 64 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 64 second)
Measured from: 0
to: 64 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 64 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.158212 0.151593 0.011009 0.018422
0.038204 0.039148 0.034037 0.029347 [error]
Peak 0.158212 0.151593 0.011009 0.018422
0.038204 0.039148 0.034037 0.029347 [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 4.11e-08 4.82e-08 4.08e-08 5.85e-08 1.51e-07 1.89e-07 erg/cm2
Error 1.45e-08 1.68e-08 2.44e-08 7.44e-08 6.08e-08 1.04e-07 erg/cm2
Peak flux Power-law 2.12e-02 1.39e-02 5.86e-03 3.39e-03 4.27e-02 4.44e-02 ph/cm2/s
Error 7.62e-03 4.70e-03 3.41e-03 4.06e-03 1.35e-02 1.44e-02 ph/cm2/s
Fluence Cutoff-PL 4.13e-08 6.85e-08 8.00e-09 9.32e-12 1.18e-07 1.18e-07 erg/cm2
Error 1.71e-08 2.82e-08 2.17e-08 3.98e-09 4.42e-08 3.44e-08 erg/cm2
Peak flux Cutoff-PL 2.04e-02 2.03e-02 1.38e-03 8.65e-07 4.21e-02 4.21e-02 ph/cm2/s
Error 8.78e-03 7.60e-03 3.30e-03 3.19e-04 1.26e-02 1.26e-02 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 4.23e-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 2.235 0.560 - - 2.53e-04 1.16e-04 46.150 57
CPL -3.745 0.517 29.1 7.3 3.42e+00 0.00e+00 40.140 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.235 0.560 - - 2.53e-04 1.16e-04 46.150 57
CPL -3.745 0.517 29.1 7.3 3.42e+00 0.00e+00 40.140 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 64.000 0.000 64.000
T90 64.000 0.000 64.000
T50 64.000 0.000 64.000
Peak 64.000 0.000 64.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
187.1610 +3.4629 0.0364 2.0 72.2 0.3966 5.3 TRIG_00595345
------------------------------------------
Foreground time interval of the image:
0.000 54.290 (delta_t = 54.290 [sec])
55.000 64.000 (delta_t = 9.000 [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 54.290000
55.000000 64.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.23488 ( -0.508111 0.611977 )
Norm@50keV : 2.53149E-04 ( -0.000114262 0.000116972 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.15 using 59 PHA bins.
# Reduced chi-squared = 0.8096 for 57 degrees of freedom
# Null hypothesis probability = 8.474451e-01
Photon flux (15-150 keV) in 63.29 sec: 4.26687E-02 ( -0.0133674 0.0135429 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.51e-07 ( -5.74512e-08 6.42147e-08 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 54.290000
55.000000 64.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -3.74482 ( 2.48892 3.52304 )
Epeak [keV] : 29.0591 ( -6.84862 7.85044 )
Norm@50keV : 3.41844 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 40.14 using 59 PHA bins.
# Reduced chi-squared = 0.7168 for 56 degrees of freedom
# Null hypothesis probability = 9.457158e-01
Photon flux (15-150 keV) in 63.29 sec: 4.21392E-02 ( -0.0124962 0.0126576 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.17536e-07 ( -3.94037e-08 4.90656e-08 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 54.290000
55.000000 64.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5.76285 -5 )
beta : -3.85672 ( 3.85677 1.4407 )
Epeak [keV] : 27.2787 ( -6.04779 6.10808 )
Norm@50keV : 37.1044 ( -10.4341 149.448 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.78 using 59 PHA bins.
# Reduced chi-squared = 0.7232 for 55 degrees of freedom
# Null hypothesis probability = 9.390895e-01
Photon flux (15-150 keV) in 63.29 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] : 7.63494 (-1.76649 2.32705)
R^2/D10^2 : 6.50370E-02 (-0.0650369 0.118705)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 40.51 using 59 PHA bins.
# Reduced chi-squared = 0.7107 for 57 degrees of freedom
# Null hypothesis probability = 9.515986e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.182e-08 2.543e-08
25- 50 6.737e-08 4.155e-08
50-150 1.513e-08 1.195e-08
15-150 1.243e-07 7.538e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 36.8436 (-17.1637 45.2846)
Norm : 0.306114 (-0.125002 0.217594)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.50 using 59 PHA bins.
# Reduced chi-squared = 0.7632 for 57 degrees of freedom
# Null hypothesis probability = 9.060264e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.320e-08 2.143e-08
25- 50 5.478e-08 3.330e-08
50-150 3.864e-08 3.281e-08
15-150 1.366e-07 8.308e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.63527 (-7.63354 -7.63354)
R1^2/D10^2 : 4.36638E-02 (-0.0436649 -0.0436649)
kT2 [keV] : 7.63460 (-7.63795 -7.63795)
R2^2/D10^2 : 2.13693E-02 (-0.0213702 -0.0213702)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 40.51 using 59 PHA bins.
# Reduced chi-squared = 0.7366 for 55 degrees of freedom
# Null hypothesis probability = 9.279079e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.181e-08 2.040e+01
25- 50 6.737e-08 1.817e+02
50-150 1.514e-08 4.079e+03
15-150 1.243e-07 4.168e+03
Peak spectrum fit
Power-law model
Time interval is from 55.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.23488 ( -0.508111 0.611977 )
Norm@50keV : 2.53149E-04 ( -0.000114262 0.000116972 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.15 using 59 PHA bins.
# Reduced chi-squared = 0.8096 for 57 degrees of freedom
# Null hypothesis probability = 8.474451e-01
Photon flux (15-150 keV) in 63.29 sec: 4.26687E-02 ( -0.0133674 0.0135429 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.51e-07 ( -5.74512e-08 6.42147e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 55.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -3.74482 ( 2.48892 3.52304 )
Epeak [keV] : 29.0591 ( -6.84862 7.85044 )
Norm@50keV : 3.41844 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 40.14 using 59 PHA bins.
# Reduced chi-squared = 0.7168 for 56 degrees of freedom
# Null hypothesis probability = 9.457158e-01
Photon flux (15-150 keV) in 63.29 sec: 4.21392E-02 ( -0.0124962 0.0126576 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.17536e-07 ( -3.94037e-08 4.90656e-08 ) ergs/cm2
Band function
Time interval is from 55.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5.76285 -5 )
beta : -3.85672 ( 3.85677 1.4407 )
Epeak [keV] : 27.2787 ( -6.04779 6.10808 )
Norm@50keV : 37.1044 ( -10.4341 149.448 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.78 using 59 PHA bins.
# Reduced chi-squared = 0.7232 for 55 degrees of freedom
# Null hypothesis probability = 9.390895e-01
Photon flux (15-150 keV) in 63.29 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] : 7.63494 (-1.76649 2.32705)
R^2/D10^2 : 6.50370E-02 (-0.0650369 0.118705)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 40.51 using 59 PHA bins.
# Reduced chi-squared = 0.7107 for 57 degrees of freedom
# Null hypothesis probability = 9.515986e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.182e-08 2.570e-08
25- 50 6.737e-08 4.193e-08
50-150 1.513e-08 1.183e-08
15-150 1.243e-07 7.753e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 36.8436 (-17.1637 45.2846)
Norm : 0.306114 (-0.125002 0.217594)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.50 using 59 PHA bins.
# Reduced chi-squared = 0.7632 for 57 degrees of freedom
# Null hypothesis probability = 9.060264e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.320e-08 2.312e-08
25- 50 5.478e-08 3.295e-08
50-150 3.864e-08 3.310e-08
15-150 1.366e-07 8.066e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.63527 (-7.63354 -7.63354)
R1^2/D10^2 : 4.36638E-02 (-0.0436649 -0.0436649)
kT2 [keV] : 7.63460 (-7.63795 -7.63795)
R2^2/D10^2 : 2.13693E-02 (-0.0213702 -0.0213702)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 40.51 using 59 PHA bins.
# Reduced chi-squared = 0.7366 for 55 degrees of freedom
# Null hypothesis probability = 9.279079e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.181e-08 1.925e+01
25- 50 6.737e-08 1.660e+02
50-150 1.514e-08 3.902e+03
15-150 1.243e-07 4.462e+03
Plot creation:
Fri Apr 11 06:16:28 EDT 2014