batgrbproduct Analysis for Trigger=582123
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 Dec 26 23:24:49 EST 2013
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger582123/GCN5_download_cron
======================================================================
Trigger: 00582123 Segment: 000
BAT Trigger Time: 409729671.104 [s; MET]
Trigger Stop: 409729671.36 [s; MET]
UTC: 2013-12-26T05:47:39.664000 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 301.307357529942 Dec: -64.9622775984442 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 14.93
Image Trigger?: NO
Rate S/N Ratio: 29.4278779391243 [ if not an image trigger ]
Image S/N Ratio: 14.93
Flight Position: [ source = BAT ]
RA: 301.307357529942 Dec: -64.9622775984442 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 301.309220333406 Dec: -64.9430306197494 [deg; J2000]
{ 20h 05m 14.2s , -64d 56' 34.9" }
+/- 0.582403756290374 [arcmin] (estimated 90% radius based on SNR)
+/- 0.147192469769182 [arcmin] (formal 1-sigma fit error)
SNR: 65.8434269689901
Angular difference between Flight and Ground position is 1.155788 arcmin
Partial Coding Fraction: 0.5625 [ including projection effects ]
Duration
T90: 7.19999992847443 +/- 0.163217630679412
Measured from: 0.376000165939331
to: 7.57600009441376 [s; relative to TRIGTIME]
T50: 2.95999997854233 +/- 0.0920869208510307
Measured from: 1.64800012111664
to: 4.60800009965897 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.10800004005432
to: 2.10800004005432 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.255999982357025
to: 8.4200000166893 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.534159 2.192986 1.884419 0.547172
0.032404 0.036444 0.034744 0.025166 [error]
Peak 0.345682 0.469898 0.353444 0.107779
0.013257 0.015054 0.014404 0.009957 [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 4.68e-07 9.28e-07 1.43e-06 4.83e-06 4.00e-06 7.66e-06 erg/cm2
Error 2.17e-08 2.46e-08 3.63e-08 2.90e-07 9.05e-08 3.05e-07 erg/cm2
Peak flux Power-law 3.40e+00 3.44e+00 2.44e+00 2.76e+00 1.04e+01 1.20e+01 ph/cm2/s
Error 2.44e-01 1.46e-01 1.19e-01 2.85e-01 4.14e-01 4.66e-01 ph/cm2/s
Fluence Cutoff-PL 4.60e-07 9.31e-07 1.44e-06 4.49e-06 3.99e-06 7.32e-06 erg/cm2
Error 2.72e-08 2.57e-08 4.11e-08 6.28e-07 9.74e-08 7.15e-07 erg/cm2
Peak flux Cutoff-PL 3.31e+00 3.46e+00 2.47e+00 2.41e+00 1.03e+01 1.17e+01 ph/cm2/s
Error 2.94e-01 1.54e-01 1.33e-01 6.02e-01 4.36e-01 7.79e-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 1.376 0.042 - - 4.75e-02 1.03e-03 54.070 57
CPL 1.326 0.107 732.3 0.0 4.99e-02 6.20e-03 54.160 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.493 0.071 - - 8.32e-02 3.24e-03 53.490 57
CPL 1.374 0.216 276.8 0.0 9.49e-02 2.36e-02 52.880 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: 6.720000 sec.
T50 in the 50-300 keV band: 2.368000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 8.676 -0.256 8.420
T90 7.200 0.376 7.576
T50 2.960 1.648 4.608
Peak 1.000 1.108 2.108
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
301.3092 -64.9430 0.0029 25.7 -92.3 6.2677 65.8 TRIG_00582123
------------------------------------------
Foreground time interval of the image:
-0.256 8.420 (delta_t = 8.676 [sec])
Background time interval of the image:
-239.104 -0.256 (delta_t = 238.848 [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 -0.256 sec. to 8.420 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.37575 ( -0.0415848 0.0415641 )
Norm@50keV : 4.74658E-02 ( -0.00102855 0.00102819 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.07 using 59 PHA bins.
# Reduced chi-squared = 0.9486 for 57 degrees of freedom
# Null hypothesis probability = 5.856186e-01
Photon flux (15-150 keV) in 8.676 sec: 5.74944 ( -0.139217 0.139813 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.99945e-06 ( -9.03935e-08 9.05158e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.256 sec. to 8.420 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.32577 ( -0.154944 0.0586061 )
Epeak [keV] : 732.313 ( -970.84 -970.84 )
Norm@50keV : 4.98923E-02 ( -0.00456781 0.00782319 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.16 using 59 PHA bins.
# Reduced chi-squared = 0.9672 for 56 degrees of freedom
# Null hypothesis probability = 5.446718e-01
Photon flux (15-150 keV) in 8.676 sec: 5.72865 ( -0.12504 0.16109 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.98896e-06 ( -9.22866e-08 1.0249e-07 ) ergs/cm2
Band function
Time interval is from -0.256 sec. to 8.420 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.563318 ( 0.9226 0.9226 )
beta : -1.38311 ( 1.38156 0.0444 )
Epeak [keV] : 45.4383 ( -45.4042 173.433 )
Norm@50keV : 0.185031 ( -0.185693 3.89705e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.59 using 59 PHA bins.
# Reduced chi-squared = 0.9743 for 55 degrees of freedom
# Null hypothesis probability = 5.287144e-01
Photon flux (15-150 keV) in 8.676 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] : 18.9020 ( )
R^2/D10^2 : 0.293597 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 514.84 using 59 PHA bins.
# Reduced chi-squared = 9.0323 for 57 degrees of freedom
# Null hypothesis probability = 6.110781e-75
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.792e-07 8.546e-09
25- 50 8.589e-07 2.854e-08
50-150 2.253e-06 8.286e-08
15-150 3.291e-06 8.286e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.362 ( )
Norm : 24.1762 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 136.89 using 59 PHA bins.
# Reduced chi-squared = 2.4016 for 57 degrees of freedom
# Null hypothesis probability = 1.600021e-08
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.223e-07 1.258e-08
25- 50 1.005e-06 2.516e-08
50-150 2.204e-06 5.422e-08
15-150 3.731e-06 8.502e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.70648 (-0.665773 0.717278)
R1^2/D10^2 : 3.91488 (-1.0146 1.47453)
kT2 [keV] : 31.3834 (-2.40953 3.04339)
R2^2/D10^2 : 4.46678E-02 (-0.0119645 0.0142035)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.51 using 59 PHA bins.
# Reduced chi-squared = 1.173 for 55 degrees of freedom
# Null hypothesis probability = 1.782353e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.123e-07 3.444e-08
25- 50 9.452e-07 3.991e-08
50-150 2.624e-06 1.414e-07
15-150 3.981e-06 1.661e-07
Peak spectrum fit
Power-law model
Time interval is from 1.108 sec. to 2.108 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.49311 ( -0.0705574 0.0710012 )
Norm@50keV : 8.31622E-02 ( -0.00324064 0.00323329 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.49 using 59 PHA bins.
# Reduced chi-squared = 0.9384 for 57 degrees of freedom
# Null hypothesis probability = 6.075645e-01
Photon flux (15-150 keV) in 1 sec: 10.3628 ( -0.413693 0.414329 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.89813e-07 ( -3.36504e-08 3.37654e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 1.108 sec. to 2.108 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.37351 ( -0.275078 0.156022 )
Epeak [keV] : 276.759 ( -276.759 -276.759 )
Norm@50keV : 9.49305E-02 ( -0.0143747 0.0327495 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.88 using 59 PHA bins.
# Reduced chi-squared = 0.9444 for 56 degrees of freedom
# Null hypothesis probability = 5.935586e-01
Photon flux (15-150 keV) in 1 sec: 10.2897 ( -0.44072 0.4319 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.83794e-07 ( -3.6667e-08 3.0833e-08 ) ergs/cm2
Band function
Time interval is from 1.108 sec. to 2.108 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.14782 ( 1.10253 1.10253 )
beta : -1.56338 ( 1.56324 0.12651 )
Epeak [keV] : 101.768 ( -94.8341 -94.8341 )
Norm@50keV : 0.129572 ( -0.0480519 0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.49 using 59 PHA bins.
# Reduced chi-squared = 0.9543 for 55 degrees of freedom
# Null hypothesis probability = 5.712150e-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] : 15.5628 ( )
R^2/D10^2 : 1.01133 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 213.49 using 59 PHA bins.
# Reduced chi-squared = 3.7455 for 57 degrees of freedom
# Null hypothesis probability = 6.158636e-20
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.094e-08 3.830e-09
25- 50 2.092e-07 1.105e-08
50-150 3.504e-07 2.645e-08
15-150 6.106e-07 2.810e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 42.3806 (-1.62202 1.62201)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.53 using 59 PHA bins.
# Reduced chi-squared = 1.009 for 57 degrees of freedom
# Null hypothesis probability = 4.556164e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.055e-07 4.550e-09
25- 50 2.030e-07 8.400e-09
50-150 4.452e-07 1.960e-08
15-150 7.538e-07 2.865e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.71468 (-1.03498 1.08176)
R1^2/D10^2 : 7.69294 (-2.64687 4.82142)
kT2 [keV] : 30.2673 (-4.291 6.35448)
R2^2/D10^2 : 8.03698E-02 (-0.0379929 0.0582557)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.87 using 59 PHA bins.
# Reduced chi-squared = 1.052 for 55 degrees of freedom
# Null hypothesis probability = 3.697291e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.194e-08 1.131e-08
25- 50 2.030e-07 1.985e-08
50-150 4.881e-07 6.920e-08
15-150 7.831e-07 8.635e-08
Plot creation:
Thu Dec 26 23:40:00 EST 2013