batgrbproduct Analysis for Trigger=592558
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): Thu Mar 20 21:50:28 EDT 2014
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger592558/GCN5_download_cron
======================================================================
Trigger: 00592558 Segment: 000
BAT Trigger Time: 416988672 [s; MET]
Trigger Stop: 416988736 [s; MET]
UTC: 2014-03-20T06:11:00.218080 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 190.635960716797 Dec: 11.5788935716526 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 5.83
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 5.83
Flight Position: [ source = BAT ]
RA: 190.635960716797 Dec: 11.5788935716526 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 190.671998208929 Dec: 11.5667507045578 [deg; J2000]
{ 12h 42m 41.3s , +11d 34' 00.3" }
+/- 4.41734455012791 [arcmin] (estimated 90% radius based on SNR)
+/- 2.79422410508833 [arcmin] (formal 1-sigma fit error)
SNR: 3.64300204725624
Angular difference between Flight and Ground position is 2.240085 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 0.120965 0.116815 0.115736 -0.026572
0.037117 0.038397 0.033785 0.030253 [error]
Peak 0.120965 0.116815 0.115736 -0.026572
0.037117 0.038397 0.033785 0.030253 [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 3.54e-08 5.58e-08 6.62e-08 1.53e-07 2.02e-07 3.10e-07 erg/cm2
Error 1.43e-08 1.61e-08 3.13e-08 1.50e-07 7.35e-08 1.82e-07 erg/cm2
Peak flux Power-law 1.81e-02 1.57e-02 9.31e-03 8.31e-03 4.67e-02 5.14e-02 ph/cm2/s
Error 7.46e-03 4.51e-03 4.25e-03 7.50e-03 1.34e-02 1.56e-02 ph/cm2/s
Fluence Cutoff-PL 3.35e-08 5.98e-08 6.68e-08 6.49e-08 1.93e-07 2.25e-07 erg/cm2
Error 1.61e-08 2.05e-08 5.09e-08 1.31e-07 7.63e-08 1.93e-07 erg/cm2
Peak flux Cutoff-PL 1.70e-02 1.67e-02 9.50e-03 4.24e-03 4.59e-02 4.75e-02 ph/cm2/s
Error 8.43e-03 5.63e-03 4.76e-03 8.47e-03 1.02e-02 1.67e-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 4.72e-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 1.752 0.542 - - 3.45e-04 1.21e-04 55.610 57
CPL 1.216 1.699 65.6 0.0 6.84e-04 0.00e+00 55.330 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.752 0.542 - - 3.45e-04 1.21e-04 55.610 57
CPL 1.216 1.699 65.6 0.0 6.84e-04 0.00e+00 55.330 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
190.6720 +11.5668 0.0529 10.7 18.4 0.2689 3.6 TRIG_00592558
------------------------------------------
Foreground time interval of the image:
0.000 60.392 (delta_t = 60.392 [sec])
61.000 64.000 (delta_t = 3.000 [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 60.392000
61.000000 64.000000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.75187 ( -0.505683 0.578225 )
Norm@50keV : 3.44854E-04 ( -0.000124935 0.000117591 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.61 using 59 PHA bins.
# Reduced chi-squared = 0.9756 for 57 degrees of freedom
# Null hypothesis probability = 5.273327e-01
Photon flux (15-150 keV) in 63.39 sec: 4.66622E-02 ( -0.0134271 0.0134279 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.01692e-07 ( -7.1192e-08 7.5746e-08 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 60.392000
61.000000 64.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.21577 ( -2.39054 1.00709 )
Epeak [keV] : 65.6069 ( )
Norm@50keV : 6.84277E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.33 using 59 PHA bins.
# Reduced chi-squared = 0.9881 for 56 degrees of freedom
# Null hypothesis probability = 5.000967e-01
Photon flux (15-150 keV) in 63.39 sec: 4.59170E-02 ( -0.0068936 0.0135849 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.92762e-07 ( -7.19851e-08 8.05972e-08 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 60.392000
61.000000 64.000000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.20523 ( -0.735824 2.4528 )
beta : -10.0000 ( 10 3.55271e-15 )
Epeak [keV] : 64.9018 ( -54.0092 -64.9923 )
Norm@50keV : 6.95236E-04 ( -0.000694336 0.0132948 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.33 using 59 PHA bins.
# Reduced chi-squared = 1.006 for 55 degrees of freedom
# Null hypothesis probability = 4.620725e-01
Photon flux (15-150 keV) in 63.39 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] : 12.7108 (-4.59456 6.12672)
R^2/D10^2 : 9.29370E-03 (-0.00923414 0.0366938)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.58 using 59 PHA bins.
# Reduced chi-squared = 1.028 for 57 degrees of freedom
# Null hypothesis probability = 4.171519e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.019e-08 1.254e-08
25- 50 6.784e-08 4.038e-08
50-150 6.837e-08 4.729e-08
15-150 1.564e-07 9.575e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 108.371 (-68.1354 -108.1)
Norm : 0.203952 (-0.064641 0.103972)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.35 using 59 PHA bins.
# Reduced chi-squared = 0.9710 for 57 degrees of freedom
# Null hypothesis probability = 5.372589e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.377e-08 2.053e-08
25- 50 5.932e-08 3.537e-08
50-150 1.005e-07 7.689e-08
15-150 1.936e-07 1.303e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.51099 (-2.57763 4.52528)
R1^2/D10^2 : 0.279642 (-0.259357 0.82431)
kT2 [keV] : 18.8219 (-7.12594 19.2031)
R2^2/D10^2 : 1.87885E-03 (-0.00173931 0.00928493)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.21 using 59 PHA bins.
# Reduced chi-squared = 0.9857 for 55 degrees of freedom
# Null hypothesis probability = 5.046466e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.635e-08 2.152e-08
25- 50 5.384e-08 3.000e-08
50-150 1.037e-07 6.897e-08
15-150 1.938e-07 1.110e-07
Peak spectrum fit
Power-law model
Time interval is from 61.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.75187 ( -0.505683 0.578225 )
Norm@50keV : 3.44854E-04 ( -0.000124935 0.000117591 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.61 using 59 PHA bins.
# Reduced chi-squared = 0.9756 for 57 degrees of freedom
# Null hypothesis probability = 5.273327e-01
Photon flux (15-150 keV) in 63.39 sec: 4.66622E-02 ( -0.0134271 0.0134279 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.01692e-07 ( -7.1192e-08 7.5746e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 61.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.21577 ( -2.39054 1.00725 )
Epeak [keV] : 65.6069 ( )
Norm@50keV : 6.84277E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.33 using 59 PHA bins.
# Reduced chi-squared = 0.9881 for 56 degrees of freedom
# Null hypothesis probability = 5.000967e-01
Photon flux (15-150 keV) in 63.39 sec: 4.59170E-02 ( -0.0068936 0.0135849 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.92762e-07 ( -7.19851e-08 8.05972e-08 ) ergs/cm2
Band function
Time interval is from 61.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.20523 ( -0.735819 2.4528 )
beta : -10.0000 ( 10 2.84217e-14 )
Epeak [keV] : 64.9018 ( -53.6014 -64.9923 )
Norm@50keV : 6.95236E-04 ( -0.000694336 0.0132948 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.33 using 59 PHA bins.
# Reduced chi-squared = 1.006 for 55 degrees of freedom
# Null hypothesis probability = 4.620725e-01
Photon flux (15-150 keV) in 63.39 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] : 12.7108 (-4.59456 6.12672)
R^2/D10^2 : 9.29370E-03 (-0.00923414 0.0366938)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.58 using 59 PHA bins.
# Reduced chi-squared = 1.028 for 57 degrees of freedom
# Null hypothesis probability = 4.171519e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.019e-08 1.231e-08
25- 50 6.784e-08 4.250e-08
50-150 6.837e-08 4.612e-08
15-150 1.564e-07 9.873e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 108.371 (-68.1354 -108.1)
Norm : 0.203952 (-0.064641 0.103972)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.35 using 59 PHA bins.
# Reduced chi-squared = 0.9710 for 57 degrees of freedom
# Null hypothesis probability = 5.372589e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.377e-08 2.078e-08
25- 50 5.932e-08 3.534e-08
50-150 1.005e-07 7.439e-08
15-150 1.936e-07 1.239e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.51099 (-2.57763 4.52528)
R1^2/D10^2 : 0.279642 (-0.259357 0.82431)
kT2 [keV] : 18.8219 (-7.12594 19.2031)
R2^2/D10^2 : 1.87885E-03 (-0.00173931 0.00928493)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.21 using 59 PHA bins.
# Reduced chi-squared = 0.9857 for 55 degrees of freedom
# Null hypothesis probability = 5.046466e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.635e-08 2.195e-08
25- 50 5.384e-08 2.892e-08
50-150 1.037e-07 6.469e-08
15-150 1.938e-07 1.080e-07
Plot creation:
Thu Mar 20 22:12:46 EDT 2014