batgrbproduct Analysis for Trigger=589590
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 Mar 2 10:59:19 EST 2014
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger589590/GCN5_download_cron
======================================================================
Trigger: 00589590 Segment: 000
BAT Trigger Time: 415380301.184 [s; MET]
Trigger Stop: 415380303.232 [s; MET]
UTC: 2014-03-01T15:24:49.478320 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 69.5477390229074 Dec: -34.2830325341323 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.65
Image Trigger?: NO
Rate S/N Ratio: 10.3923048454133 [ if not an image trigger ]
Image S/N Ratio: 7.65
Flight Position: [ source = BAT ]
RA: 69.5477390229074 Dec: -34.2830325341323 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 69.5209230487416 Dec: -34.2490998396022 [deg; J2000]
{ 04h 38m 05.0s , -34d 14' 56.8" }
+/- 1.94344849340105 [arcmin] (estimated 90% radius based on SNR)
+/- 0.835001343200576 [arcmin] (formal 1-sigma fit error)
SNR: 11.7725674374205
Angular difference between Flight and Ground position is 2.431713 arcmin
Partial Coding Fraction: 0.6640625 [ including projection effects ]
Duration
T90: 31 +/- 5.65685424949238
Measured from: -11.1839998960495
to: 19.8160001039505 [s; relative to TRIGTIME]
T50: 17 +/- 4.47213595499958
Measured from: -4.1839998960495
to: 12.8160001039505 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.815999984741211
to: 1.81599998474121 [s; relative to TRIGTIME]
Total Fluence
Measured from: -13.1840000152588
to: 22.8159999847412 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.312543 0.318334 0.171953 0.072193
0.037927 0.039174 0.033998 0.028713 [error]
Peak 0.028964 0.038165 0.014901 0.007447
0.006861 0.007138 0.006041 0.004763 [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 9.45e-08 1.31e-07 1.35e-07 2.53e-07 4.41e-07 6.14e-07 erg/cm2
Error 1.85e-08 1.79e-08 3.38e-08 1.28e-07 7.59e-08 1.64e-07 erg/cm2
Peak flux Power-law 2.65e-01 2.31e-01 1.38e-01 1.25e-01 6.88e-01 7.59e-01 ph/cm2/s
Error 9.41e-02 5.54e-02 4.86e-02 8.62e-02 1.64e-01 1.85e-01 ph/cm2/s
Fluence Cutoff-PL 9.60e-08 1.31e-07 1.33e-07 2.27e-07 4.35e-07 5.56e-07 erg/cm2
Error 1.83e-08 1.80e-08 2.59e-08 1.50e-07 7.52e-08 1.46e-07 erg/cm2
Peak flux Cutoff-PL 2.65e-01 2.31e-01 1.38e-01 2.27e-01 6.88e-01 7.58e-01 ph/cm2/s
Error 9.56e-02 5.52e-02 4.07e-02 1.86e-01 1.64e-01 2.03e-01 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 1.962 0.277 - - 1.33e-03 2.38e-04 59.920 57
CPL 2.281 0.000 108.2 0.0 8.83e-04 0.00e+00 58.510 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.741 0.425 - - 5.11e-03 1.40e-03 61.390 57
CPL 1.565 1.535 102.5 0.0 6.49e-03 0.00e+00 61.440 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: 1.344000 sec.
T50 in the 50-300 keV band: 0.640000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 36.000 -13.184 22.816
T90 31.000 -11.184 19.816
T50 17.000 -4.184 12.816
Peak 1.000 0.816 1.816
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
69.5209 -34.2491 0.0164 25.1 -111.0 0.8814 11.8 TRIG_00589590
------------------------------------------
Foreground time interval of the image:
-13.184 22.816 (delta_t = 36.000 [sec])
Background time interval of the image:
-239.184 -150.714 (delta_t = 88.470 [sec])
-144.184 -13.184 (delta_t = 131.000 [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 -13.184 sec. to 22.816 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.96151 ( -0.267816 0.286839 )
Norm@50keV : 1.33123E-03 ( -0.000243244 0.000233037 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.92 using 59 PHA bins.
# Reduced chi-squared = 1.051 for 57 degrees of freedom
# Null hypothesis probability = 3.702113e-01
Photon flux (15-150 keV) in 36 sec: 0.196232 ( -0.0264142 0.0264158 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.41198e-07 ( -7.4759e-08 7.71026e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -13.184 sec. to 22.816 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.28067 ( )
Epeak [keV] : 108.196 ( )
Norm@50keV : 8.83109E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.51 using 59 PHA bins.
# Reduced chi-squared = 1.045 for 56 degrees of freedom
# Null hypothesis probability = 3.834731e-01
Photon flux (15-150 keV) in 36 sec: 0.196224 ( -0.026434 0.026404 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.34988e-07 ( -6.91848e-08 8.12052e-08 ) ergs/cm2
Band function
Time interval is from -13.184 sec. to 22.816 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.97119 ( -4.97119 -4.97119 )
beta : -2.01629 ( -0.340257 0.289918 )
Epeak [keV] : 18.9668 ( -18.9668 4.28373 )
Norm@50keV : 1234.49 ( -165.782 1.88938e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.41 using 59 PHA bins.
# Reduced chi-squared = 1.080 for 55 degrees of freedom
# Null hypothesis probability = 3.180766e-01
Photon flux (15-150 keV) in 36 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] : 8.57476 (-1.42328 1.76948)
R^2/D10^2 : 0.158111 (-0.0816007 0.164535)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 79.45 using 59 PHA bins.
# Reduced chi-squared = 1.394 for 57 degrees of freedom
# Null hypothesis probability = 2.634300e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.930e-08 1.998e-08
25- 50 1.560e-07 3.659e-08
50-150 5.121e-08 2.122e-08
15-150 2.865e-07 5.679e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 72.5223 (-29.1248 70.4246)
Norm : 0.940666 (-0.196853 0.277472)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.51 using 59 PHA bins.
# Reduced chi-squared = 1.114 for 57 degrees of freedom
# Null hypothesis probability = 2.580131e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.719e-08 1.670e-08
25- 50 1.400e-07 2.345e-08
50-150 1.846e-07 1.006e-07
15-150 4.118e-07 9.599e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.87774 (-1.846 1.99074)
R1^2/D10^2 : 0.579532 (-0.241189 0.620013)
kT2 [keV] : 34.1958 (-27.9213 -51.3635)
R2^2/D10^2 : 7.37510E-04 (-0.000259033 0.0018903)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.10 using 59 PHA bins.
# Reduced chi-squared = 1.075 for 55 degrees of freedom
# Null hypothesis probability = 3.282623e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.739e-08 5.509e-08
25- 50 1.175e-07 5.338e-08
50-150 2.321e-07 1.443e-07
15-150 4.470e-07 2.396e-07
Peak spectrum fit
Power-law model
Time interval is from 0.816 sec. to 1.816 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.74077 ( -0.412055 0.437737 )
Norm@50keV : 5.10519E-03 ( -0.00142482 0.00136664 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.39 using 59 PHA bins.
# Reduced chi-squared = 1.077 for 57 degrees of freedom
# Null hypothesis probability = 3.216494e-01
Photon flux (15-150 keV) in 1 sec: 0.687975 ( -0.164453 0.164496 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.71336e-08 ( -1.31626e-08 1.36211e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.816 sec. to 1.816 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.56520 ( -2.29117 0.779747 )
Epeak [keV] : 102.538 ( )
Norm@50keV : 6.49391E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.44 using 59 PHA bins.
# Reduced chi-squared = 1.097 for 56 degrees of freedom
# Null hypothesis probability = 2.873551e-01
Photon flux (15-150 keV) in 1 sec: 0.687934 ( -0.16447 0.164328 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.25386e-08 ( -6.7923e-09 1.48755e-08 ) ergs/cm2
Band function
Time interval is from 0.816 sec. to 1.816 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -5 -5 )
beta : -2.15017 ( -1.0167 0.594595 )
Epeak [keV] : 26.6752 ( -26.6701 6.40945 )
Norm@50keV : 507.202 ( -117.648 3.86217e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.88 using 59 PHA bins.
# Reduced chi-squared = 1.071 for 55 degrees of freedom
# Null hypothesis probability = 3.354908e-01
Photon flux (15-150 keV) in 1 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] : 9.30692 (-2.41575 3.66532)
R^2/D10^2 : 0.429156 (-0.307255 0.919792)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.33 using 59 PHA bins.
# Reduced chi-squared = 1.146 for 57 degrees of freedom
# Null hypothesis probability = 2.098784e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.357e-09 4.356e-09
25- 50 1.646e-08 7.745e-09
50-150 6.953e-09 4.786e-09
15-150 3.078e-08 1.481e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 102.672 (-59.561 -103.758)
Norm : 3.05093 (-0.866403 1.32273)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.61 using 59 PHA bins.
# Reduced chi-squared = 1.081 for 57 degrees of freedom
# Null hypothesis probability = 3.147010e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.974e-09 3.318e-09
25- 50 1.386e-08 7.526e-09
50-150 2.280e-08 1.760e-08
15-150 4.463e-08 2.983e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.45885 (-2.22639 2.73038)
R1^2/D10^2 : 0.887495 (-0.618953 2.30735)
kT2 [keV] : 76.7983 (-64.2862 -79.0929)
R2^2/D10^2 : 3.95278E-04 (-0.000342445 0.0193475)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.21 using 59 PHA bins.
# Reduced chi-squared = 1.058 for 55 degrees of freedom
# Null hypothesis probability = 3.580618e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.611e-09 5.140e-09
25- 50 1.442e-08 8.315e-09
50-150 2.655e-08 1.446e-08
15-150 4.958e-08 2.515e-08
Plot creation:
Sun Mar 2 11:19:11 EST 2014