batgrbproduct Analysis for Trigger=602668
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 Jun 27 10:45:24 EDT 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger602668/GCN5_download_cron
======================================================================
Trigger: 00602668 Segment: 000
BAT Trigger Time: 425489272 [s; MET]
Trigger Stop: 425489784 [s; MET]
UTC: 2014-06-26T15:27:39.811120 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 183.900321502936 Dec: 6.46779079524877 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 6.06
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 6.06
Flight Position: [ source = BAT ]
RA: 183.900321502936 Dec: 6.46779079524877 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 183.886931839934 Dec: 6.46490064133728 [deg; J2000]
{ 12h 15m 32.9s , +06d 27' 53.6" }
+/- 4.78653670766742 [arcmin] (estimated 90% radius based on SNR)
+/- 2.70020331991939 [arcmin] (formal 1-sigma fit error)
SNR: 3.24832328974954
Angular difference between Flight and Ground position is 0.816887 arcmin
Partial Coding Fraction: 0.78125 [ including projection effects ]
Duration
T90: 512 +/-
Measured from: 0
to: 512 [s; relative to TRIGTIME]
T50: 512 +/-
Measured from: 0
to: 512 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 512 second)
Measured from: 0
to: 512 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 512 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.617453 0.494495 0.117498 0.255160
0.153234 0.161173 0.149168 0.153806 [error]
Peak 0.617453 0.494495 0.117498 0.255160
0.153234 0.161173 0.149168 0.153806 [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 1.64e-07 1.98e-07 1.72e-07 2.57e-07 6.24e-07 7.91e-07 erg/cm2
Error 7.03e-08 7.78e-08 1.26e-07 4.26e-07 2.96e-07 5.67e-07 erg/cm2
Peak flux Power-law 1.05e-02 7.00e-03 3.05e-03 1.83e-03 2.14e-02 2.24e-02 ph/cm2/s
Error 4.58e-03 2.67e-03 2.15e-03 2.79e-03 7.56e-03 8.18e-03 ph/cm2/s
Fluence Cutoff-PL 1.80e-07 2.16e-07 1.58e-08 8.11e-12 4.12e-07 4.12e-07 erg/cm2
Error 8.10e-08 1.66e-07 1.37e-07 1.78e-07 2.97e-07 4.98e-07 erg/cm2
Peak flux Cutoff-PL 1.11e-02 8.11e-03 3.40e-04 9.11e-08 1.96e-02 1.96e-02 ph/cm2/s
Error 5.23e-03 4.22e-03 3.40e-03 2.12e-03 6.85e-03 6.83e-03 ph/cm2/s
Fluence Band 1.01e-07 2.37e-07 2.28e-07 4.00e-07 6.90e-07 9.76e-07 erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Band 6.17e-03 7.06e-03 4.62e-03 2.26e-03 1.92e-02 2.01e-02 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 2.197 0.761 - - 1.30e-04 6.99e-05 49.410 57
CPL -1.960 0.000 25.8 0.0 1.46e-01 0.00e+00 48.280 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.197 0.761 - - 1.30e-04 6.99e-05 49.410 57
CPL -1.960 0.000 25.8 0.0 1.46e-01 0.00e+00 48.280 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 512.000 0.000 512.000
T90 512.000 0.000 512.000
T50 512.000 0.000 512.000
Peak 512.000 0.000 512.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
183.8869 +6.4649 0.0596 31.6 -165.1 1.2426 3.2 TRIG_00602668
------------------------------------------
Foreground time interval of the image:
0.000 512.000 (delta_t = 512.000 [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 512.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.19745 ( -0.684465 0.837631 )
Norm@50keV : 1.29671E-04 ( -6.97513e-05 7.0096e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.41 using 59 PHA bins.
# Reduced chi-squared = 0.8668 for 57 degrees of freedom
# Null hypothesis probability = 7.524006e-01
Photon flux (15-150 keV) in 512 sec: 2.14387E-02 ( -0.00755097 0.00757195 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.23995e-07 ( -2.73724e-07 3.18481e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 512.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.96019 ( )
Epeak [keV] : 25.8055 ( )
Norm@50keV : 0.145626 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.28 using 59 PHA bins.
# Reduced chi-squared = 0.8621 for 56 degrees of freedom
# Null hypothesis probability = 7.588200e-01
Photon flux (15-150 keV) in 512 sec: 1.95844E-02 ( -0.0067951 0.0069117 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.11634e-07 ( -1.55894e-07 4.38061e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 512.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5 -5 )
beta : -2.83357 ( 2.83394 1.06768 )
Epeak [keV] : 22.5180 ( -22.5174 8.37936 )
Norm@50keV : 58.7773 ( -19.6753 338626 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.52 using 59 PHA bins.
# Reduced chi-squared = 0.8640 for 55 degrees of freedom
# Null hypothesis probability = 7.529543e-01
Photon flux (15-150 keV) in 512 sec: 1.92403E-02 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 6.89674e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.56875 (-1.83485 2.59965)
R^2/D10^2 : 5.44386E-02 (-0.0544386 0.160433)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.35 using 59 PHA bins.
# Reduced chi-squared = 0.8482 for 57 degrees of freedom
# Null hypothesis probability = 7.858103e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.800e-07 1.107e-07
25- 50 2.172e-07 1.384e-07
50-150 2.844e-08 2.616e-08
15-150 4.256e-07 2.627e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 34.2307 (-19.8653 137.593)
Norm : 0.153806 (-0.0820852 0.209141)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.28 using 59 PHA bins.
# Reduced chi-squared = 0.8646 for 57 degrees of freedom
# Null hypothesis probability = 7.565818e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.704e-07 1.075e-07
25- 50 2.087e-07 1.306e-07
50-150 1.349e-07 1.154e-07
15-150 5.140e-07 3.338e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.17129 (-1.88589 2.3133)
R1^2/D10^2 : 6.72220E-02 (-0.0672401 0.23849)
kT2 [keV] : 175.299 (-175.06 -175.06)
R2^2/D10^2 : 2.92756E-06 (-2.93337e-06 0.000419015)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.26 using 59 PHA bins.
# Reduced chi-squared = 0.8410 for 55 degrees of freedom
# Null hypothesis probability = 7.933323e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.828e-07 1.157e-07
25- 50 2.061e-07 1.288e-07
50-150 3.539e-07 3.579e-08
15-150 7.428e-07 2.586e-07
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 512.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.19745 ( -0.684465 0.837631 )
Norm@50keV : 1.29671E-04 ( -6.97513e-05 7.0096e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.41 using 59 PHA bins.
# Reduced chi-squared = 0.8668 for 57 degrees of freedom
# Null hypothesis probability = 7.524006e-01
Photon flux (15-150 keV) in 512 sec: 2.14387E-02 ( -0.00755097 0.00757195 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.23995e-07 ( -2.73724e-07 3.18481e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 512.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.96019 ( )
Epeak [keV] : 25.8055 ( )
Norm@50keV : 0.145626 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.28 using 59 PHA bins.
# Reduced chi-squared = 0.8621 for 56 degrees of freedom
# Null hypothesis probability = 7.588200e-01
Photon flux (15-150 keV) in 512 sec: 1.95844E-02 ( -0.0067951 0.0069117 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.11634e-07 ( -1.55896e-07 4.3886e-07 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 512.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5 -5 )
beta : -2.83357 ( 2.83394 1.06768 )
Epeak [keV] : 22.5180 ( -22.5174 8.37936 )
Norm@50keV : 58.7773 ( -19.6753 338626 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.52 using 59 PHA bins.
# Reduced chi-squared = 0.8640 for 55 degrees of freedom
# Null hypothesis probability = 7.529543e-01
Photon flux (15-150 keV) in 512 sec: 1.92403E-02 ( ) ph/cm2/s
Energy fluence (15-150 keV) : 6.89674e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 6.56875 (-1.83485 2.59965)
R^2/D10^2 : 5.44386E-02 (-0.0544386 0.160433)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.35 using 59 PHA bins.
# Reduced chi-squared = 0.8482 for 57 degrees of freedom
# Null hypothesis probability = 7.858103e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.800e-07 1.111e-07
25- 50 2.172e-07 1.430e-07
50-150 2.844e-08 2.639e-08
15-150 4.256e-07 2.719e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 34.2307 (-19.8653 137.593)
Norm : 0.153806 (-0.0820852 0.209141)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.28 using 59 PHA bins.
# Reduced chi-squared = 0.8646 for 57 degrees of freedom
# Null hypothesis probability = 7.565818e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.704e-07 1.051e-07
25- 50 2.087e-07 1.325e-07
50-150 1.349e-07 1.123e-07
15-150 5.140e-07 3.361e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.17129 (-1.88589 2.3133)
R1^2/D10^2 : 6.72220E-02 (-0.0672401 0.23849)
kT2 [keV] : 175.299 (-175.06 -175.06)
R2^2/D10^2 : 2.92756E-06 (-2.93337e-06 0.000425)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.26 using 59 PHA bins.
# Reduced chi-squared = 0.8410 for 55 degrees of freedom
# Null hypothesis probability = 7.933323e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.828e-07 1.143e-07
25- 50 2.061e-07 1.315e-07
50-150 3.539e-07 5.189e-08
15-150 7.428e-07 2.872e-07
Plot creation:
Fri Jun 27 10:50:42 EDT 2014