batgrbproduct Analysis for Trigger=584155
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 Jan 19 08:33:56 EST 2014
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger584155/GCN5_download_cron
======================================================================
Trigger: 00584155 Segment: 000
BAT Trigger Time: 411727171.2 [s; MET]
Trigger Stop: 411727179.392 [s; MET]
UTC: 2014-01-18T08:39:19.666460 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 215.410961472819 Dec: -61.608385221638 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.74
Image Trigger?: NO
Rate S/N Ratio: 8.24621125123532 [ if not an image trigger ]
Image S/N Ratio: 7.74
Flight Position: [ source = BAT ]
RA: 215.410961472819 Dec: -61.608385221638 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 215.410520075351 Dec: -61.5839418825026 [deg; J2000]
{ 14h 21m 38.5s , -61d 35' 02.2" }
+/- 3.12834892382259 [arcmin] (estimated 90% radius based on SNR)
+/- 1.59012235582273 [arcmin] (formal 1-sigma fit error)
SNR: 5.96383001309986
Angular difference between Flight and Ground position is 1.466654 arcmin
Partial Coding Fraction: 1.015625 [ including projection effects ]
Duration
T90: 8.19200003147125 +/-
Measured from: 0
to: 8.19200003147125 [s; relative to TRIGTIME]
T50: 8.19200003147125 +/-
Measured from: 0
to: 8.19200003147125 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 8.19200003147125 second)
Measured from: 0
to: 8.19200003147125 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 8.19200003147125 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.134010 0.017792 -0.000811 0.016564
0.017917 0.017260 0.014774 0.013116 [error]
Peak 0.134010 0.017792 -0.000811 0.016564
0.017917 0.017260 0.014774 0.013116 [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 1.32e-08 2.82e-09 7.21e-10 5.19e-08 5.21e-08 erg/cm2
Error 8.06e-09 7.31e-09 3.79e-09 1.84e-09 1.65e-08 1.71e-08 erg/cm2
Peak flux Power-law 1.48e-01 3.14e-02 3.37e-03 3.97e-04 1.83e-01 1.83e-01 ph/cm2/s
Error 3.35e-02 1.66e-02 4.41e-03 9.43e-04 4.59e-02 4.61e-02 ph/cm2/s
Fluence Cutoff-PL 4.08e-08 7.42e-09 6.21e-12 1.37e-19 4.83e-08 4.83e-08 erg/cm2
Error 9.50e-09 8.54e-09 9.64e-10 0.00e+00 1.24e-08 1.24e-08 erg/cm2
Peak flux Cutoff-PL 1.67e-01 1.98e-02 8.94e-06 1.02e-13 1.87e-01 1.87e-01 ph/cm2/s
Error 3.86e-02 2.11e-02 1.21e-03 0.00e+00 4.26e-02 4.26e-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 0.00e+00 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 4.225 0.910 - - 2.43e-04 2.65e-04 68.160 57
CPL 1.000 0.000 50.0 0.0 2.79e-03 0.00e+00 101.950 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 4.225 0.910 - - 2.43e-04 2.65e-04 68.160 57
CPL 1.000 0.000 50.0 0.0 2.79e-03 0.00e+00 101.950 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 8.192 0.000 8.192
T90 8.192 0.000 8.192
T50 8.192 0.000 8.192
Peak 8.192 0.000 8.192
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
215.4105 -61.5839 0.0323 0.0 -173.6 0.1878 6.0 TRIG_00584155
------------------------------------------
Foreground time interval of the image:
0.000 8.192 (delta_t = 8.192 [sec])
Background time interval of the image:
-239.200 -27.200 (delta_t = 212.000 [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 0.000 sec. to 8.192 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 4.22547 ( -0.791251 1.02778 )
Norm@50keV : 2.42627E-04 ( -0.000243017 0.000287763 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.16 using 59 PHA bins.
# Reduced chi-squared = 1.196 for 57 degrees of freedom
# Null hypothesis probability = 1.479694e-01
Photon flux (15-150 keV) in 8.192 sec: 0.182684 ( -0.0454928 0.0463787 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.18505e-08 ( -1.53283e-08 1.77326e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 8.192 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 2.78785E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 101.95 using 59 PHA bins.
# Reduced chi-squared = 1.8205 for 56 degrees of freedom
# Null hypothesis probability = 1.714877e-04
Photon flux (15-150 keV) in 8.192 sec: 0.187215 ( -0.042363 0.042804 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.82536e-08 ( -1.1917e-08 1.2979e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 8.192 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.04902 ( 1.70225 1.70225 )
beta : -10.0000 ( 9.99824 0.0100452 )
Epeak [keV] : 15.3652 ( -3.44937 16.8003 )
Norm@50keV : 1622.65 ( -1619.96 6788.86 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.86 using 59 PHA bins.
# Reduced chi-squared = 1.179 for 55 degrees of freedom
# Null hypothesis probability = 1.706641e-01
Photon flux (15-150 keV) in 8.192 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] : 3.42480 (-0.674795 0.799166)
R^2/D10^2 : 11.9559 (-11.9559 31.3567)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.00 using 59 PHA bins.
# Reduced chi-squared = 1.140 for 57 degrees of freedom
# Null hypothesis probability = 2.180778e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.983e-08 2.273e-08
25- 50 9.018e-09 5.820e-09
50-150 3.968e-11 4.325e-11
15-150 4.889e-08 2.868e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.60585 (-2.37292 3.71126)
Norm : 12.0200 (-6.84601 20.6495)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.01 using 59 PHA bins.
# Reduced chi-squared = 1.158 for 57 degrees of freedom
# Null hypothesis probability = 1.935062e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.802e-08 2.174e-08
25- 50 1.088e-08 6.996e-09
50-150 3.235e-10 3.847e-10
15-150 4.922e-08 2.810e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.42076 (-0.682994 0.78389)
R1^2/D10^2 : 12.0005 (-12.0115 29.9647)
kT2 [keV] : 199.355 (-199.363 -199.363)
R2^2/D10^2 : 4.77401E-06 (-4.8828e-06 -4.8828e-06)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.74 using 59 PHA bins.
# Reduced chi-squared = 1.177 for 55 degrees of freedom
# Null hypothesis probability = 1.731934e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.977e-08 2.281e-08
25- 50 9.384e-09 5.755e-09
50-150 1.039e-08 4.293e-11
15-150 5.955e-08 2.911e-08
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 8.192 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 4.22547 ( -0.791251 1.02778 )
Norm@50keV : 2.42627E-04 ( -0.000243017 0.000287763 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.16 using 59 PHA bins.
# Reduced chi-squared = 1.196 for 57 degrees of freedom
# Null hypothesis probability = 1.479694e-01
Photon flux (15-150 keV) in 8.192 sec: 0.182684 ( -0.0454928 0.0463787 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.18505e-08 ( -1.53283e-08 1.77326e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 8.192 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 2.78785E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 101.95 using 59 PHA bins.
# Reduced chi-squared = 1.8205 for 56 degrees of freedom
# Null hypothesis probability = 1.714877e-04
Photon flux (15-150 keV) in 8.192 sec: 0.187215 ( -0.042363 0.042804 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.82536e-08 ( -1.1917e-08 1.2979e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 8.192 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.04902 ( 1.70225 1.70225 )
beta : -10.0000 ( 9.99824 0.0100452 )
Epeak [keV] : 15.3652 ( -3.44937 16.8003 )
Norm@50keV : 1622.65 ( -1619.96 6786.51 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.86 using 59 PHA bins.
# Reduced chi-squared = 1.179 for 55 degrees of freedom
# Null hypothesis probability = 1.706641e-01
Photon flux (15-150 keV) in 8.192 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] : 3.42480 (-0.674795 0.799166)
R^2/D10^2 : 11.9559 (-11.9559 31.3567)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.00 using 59 PHA bins.
# Reduced chi-squared = 1.140 for 57 degrees of freedom
# Null hypothesis probability = 2.180778e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.983e-08 2.285e-08
25- 50 9.018e-09 5.951e-09
50-150 3.968e-11 4.243e-11
15-150 4.889e-08 2.759e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.60585 (-2.37292 3.71126)
Norm : 12.0200 (-6.84601 20.6495)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.01 using 59 PHA bins.
# Reduced chi-squared = 1.158 for 57 degrees of freedom
# Null hypothesis probability = 1.935062e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.802e-08 2.145e-08
25- 50 1.088e-08 7.094e-09
50-150 3.235e-10 3.464e-10
15-150 4.922e-08 2.813e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.42076 (-0.682994 0.78389)
R1^2/D10^2 : 12.0005 (-12.0115 29.9649)
kT2 [keV] : 199.355 (-199.363 -199.363)
R2^2/D10^2 : 4.77401E-06 (-4.8828e-06 -4.8828e-06)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.74 using 59 PHA bins.
# Reduced chi-squared = 1.177 for 55 degrees of freedom
# Null hypothesis probability = 1.731934e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.977e-08 2.245e-08
25- 50 9.384e-09 5.718e-09
50-150 1.039e-08 5.128e-11
15-150 5.955e-08 2.782e-08
Plot creation:
Sun Jan 19 08:55:44 EST 2014