batgrbproduct Analysis for Trigger=582760
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 Jan 3 08:55:50 EST 2014
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger582760/GCN5_download_cron
======================================================================
Trigger: 00582760 Segment: 000
BAT Trigger Time: 410390269.312 [s; MET]
Trigger Stop: 410390269.376 [s; MET]
UTC: 2014-01-02T21:17:37.841180 [includes UTCF correction]
Where From?: (*SHORT BURST*) TDRSS scaled map message
BAT
RA: 211.90218533779 Dec: 1.3311796378584 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.72
Image Trigger?: NO
Rate S/N Ratio: 30.8382878902185 [ if not an image trigger ]
Image S/N Ratio: 9.72
Flight Position: [ source = BAT ]
RA: 211.90218533779 Dec: 1.3311796378584 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 211.91454347399 Dec: 1.33190834011861 [deg; J2000]
{ 14h 07m 39.5s , +01d 19' 54.9" }
+/- 0.416491135435999 [arcmin] (estimated 90% radius based on SNR)
+/- 0.0989934864302701 [arcmin] (formal 1-sigma fit error)
SNR: 106.301335190617
Angular difference between Flight and Ground position is 0.742576 arcmin
Partial Coding Fraction: 0.9921875 [ including projection effects ]
Duration
T90: 65.1279999613762 +/- 15.7481142957698
Measured from: 0.456000149250031
to: 65.5840001106262 [s; relative to TRIGTIME]
T50: 2.24799996614456 +/- 0.116275557221038
Measured from: 1.17600011825562
to: 3.42400008440018 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 1.96799999475479
to: 2.96799999475479 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.148000001907349
to: 131.22000002861 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.005694 4.385423 3.558814 0.955405
0.068265 0.071833 0.064324 0.053928 [error]
Peak 0.706851 1.307527 1.369217 0.415745
0.013959 0.018705 0.019771 0.013560 [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 8.95e-07 1.77e-06 2.74e-06 9.25e-06 7.65e-06 1.47e-05 erg/cm2
Error 4.13e-08 4.69e-08 6.89e-08 5.54e-07 1.72e-07 5.81e-07 erg/cm2
Peak flux Power-law 6.83e+00 9.07e+00 8.85e+00 1.55e+01 2.98e+01 4.02e+01 ph/cm2/s
Error 2.84e-01 2.26e-01 1.75e-01 6.83e-01 5.93e-01 7.94e-01 ph/cm2/s
Fluence Cutoff-PL 8.60e-07 1.79e-06 2.78e-06 7.61e-06 7.58e-06 1.30e-05 erg/cm2
Error 5.41e-08 4.90e-08 7.98e-08 1.30e-06 1.89e-07 1.31e-06 erg/cm2
Peak flux Cutoff-PL 6.34e+00 9.12e+00 9.12e+00 1.25e+01 2.95e+01 3.70e+01 ph/cm2/s
Error 3.85e-01 2.33e-01 2.30e-01 1.55e+00 6.26e-01 1.71e+00 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 1.375 0.042 - - 6.00e-03 1.29e-04 36.820 57
CPL 1.225 0.127 294.3 -84.5 6.98e-03 1.05e-03 34.390 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.035 0.034 - - 2.59e-01 4.95e-03 49.910 57
CPL 0.798 0.140 308.9 204.6 3.25e-01 4.25e-02 41.080 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: 3.584000 sec.
T50 in the 50-300 keV band: 1.984000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 131.368 -0.148 131.220
T90 65.128 0.456 65.584
T50 2.248 1.176 3.424
Peak 1.000 1.968 2.968
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
211.9145 +1.3319 0.0018 15.4 -4.5 11.0580 106.3 TRIG_00582760
------------------------------------------
Foreground time interval of the image:
-0.148 7.289 (delta_t = 7.437 [sec])
Background time interval of the image:
-50.111 -0.148 (delta_t = 49.963 [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 -0.148 sec. to 131.220 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.37528 ( -0.0415397 0.0414681 )
Norm@50keV : 5.99528E-03 ( -0.000128895 0.000128866 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 36.82 using 59 PHA bins.
# Reduced chi-squared = 0.6460 for 57 degrees of freedom
# Null hypothesis probability = 9.825710e-01
Photon flux (15-150 keV) in 131.4 sec: 0.726122 ( -0.0174765 0.0175291 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.65154e-06 ( -1.71564e-07 1.71736e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.148 sec. to 131.220 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.22491 ( -0.170141 0.0835558 )
Epeak [keV] : 294.258 ( -125.21 -294.258 )
Norm@50keV : 6.98111E-03 ( -0.000834433 0.00127508 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 34.39 using 59 PHA bins.
# Reduced chi-squared = 0.6141 for 56 degrees of freedom
# Null hypothesis probability = 9.898645e-01
Photon flux (15-150 keV) in 131.4 sec: 0.717520 ( -0.01959 0.019677 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.58199e-06 ( -1.89847e-07 1.89111e-07 ) ergs/cm2
Band function
Time interval is from -0.148 sec. to 131.220 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.01199 ( -0.289078 5.86009 )
beta : -1.44654 ( 1.44694 0.0858199 )
Epeak [keV] : 123.214 ( -84.3816 1171.4 )
Norm@50keV : 9.21600E-03 ( -0.00284446 0.00789779 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 33.26 using 59 PHA bins.
# Reduced chi-squared = 0.6047 for 55 degrees of freedom
# Null hypothesis probability = 9.910507e-01
Photon flux (15-150 keV) in 131.4 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] : 18.4288 ( )
R^2/D10^2 : 4.02995E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 428.17 using 59 PHA bins.
# Reduced chi-squared = 7.5118 for 57 degrees of freedom
# Null hypothesis probability = 2.605688e-58
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.573e-07 1.610e-08
25- 50 1.681e-06 5.059e-08
50-150 4.169e-06 1.524e-07
15-150 6.208e-06 1.531e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 3.05572 (-0.0658116 0.0657674)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 107.44 using 59 PHA bins.
# Reduced chi-squared = 1.8850 for 57 degrees of freedom
# Null hypothesis probability = 6.109199e-05
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.000e-06 2.405e-08
25- 50 1.924e-06 4.796e-08
50-150 4.220e-06 9.921e-08
15-150 7.144e-06 1.669e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.31271 (-0.790159 0.841891)
R1^2/D10^2 : 0.375397 (-0.097861 0.145794)
kT2 [keV] : 31.7100 (-2.9565 3.99138)
R2^2/D10^2 : 5.25987E-03 (-0.00173642 0.00215379)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.41 using 59 PHA bins.
# Reduced chi-squared = 0.8620 for 55 degrees of freedom
# Null hypothesis probability = 7.566816e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.382e-07 6.386e-08
25- 50 1.846e-06 8.344e-08
50-150 4.946e-06 3.022e-07
15-150 7.529e-06 3.640e-07
Peak spectrum fit
Power-law model
Time interval is from 1.968 sec. to 2.968 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.03533 ( -0.0341919 0.0340711 )
Norm@50keV : 0.258638 ( -0.00495496 0.00494885 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.91 using 59 PHA bins.
# Reduced chi-squared = 0.8756 for 57 degrees of freedom
# Null hypothesis probability = 7.357853e-01
Photon flux (15-150 keV) in 1 sec: 29.8408 ( -0.592973 0.592458 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.76256e-06 ( -5.45191e-08 5.45657e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 1.968 sec. to 2.968 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.797535 ( -0.142035 0.137734 )
Epeak [keV] : 308.932 ( -91.6064 317.657 )
Norm@50keV : 0.324720 ( -0.039209 0.0458551 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.08 using 59 PHA bins.
# Reduced chi-squared = 0.7336 for 56 degrees of freedom
# Null hypothesis probability = 9.324607e-01
Photon flux (15-150 keV) in 1 sec: 29.4631 ( -0.6256 0.6269 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.74111e-06 ( 0 0 ) ergs/cm2
Band function
Time interval is from 1.968 sec. to 2.968 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.99996 ( -7.8079e-06 -4.99996 )
beta : -1.06501 ( -0.0363894 0.0363423 )
Epeak [keV] : 28.2191 ( -4.03224 2.63098 )
Norm@50keV : 8636.08 ( -159.871 12925.7 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.08 using 59 PHA bins.
# Reduced chi-squared = 0.7469 for 55 degrees of freedom
# Null hypothesis probability = 9.183827e-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] : 22.9534 ( )
R^2/D10^2 : 0.925917 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 455.88 using 59 PHA bins.
# Reduced chi-squared = 7.9979 for 57 degrees of freedom
# Null hypothesis probability = 1.391276e-63
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.849e-08 3.375e-09
25- 50 4.796e-07 1.490e-08
50-150 1.887e-06 5.400e-08
15-150 2.456e-06 5.300e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 ( )
Norm : 126.039 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 709.41 using 59 PHA bins.
# Reduced chi-squared = 12.446 for 57 degrees of freedom
# Null hypothesis probability = 2.241817e-113
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.139e-07 5.950e-09
25- 50 6.037e-07 1.300e-08
50-150 1.324e-06 2.600e-08
15-150 2.242e-06 4.550e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.15045 (-0.855074 0.933609)
R1^2/D10^2 : 8.89402 (-2.15245 3.06456)
kT2 [keV] : 36.5154 (-2.8616 3.79088)
R2^2/D10^2 : 0.183964 (-0.0495044 0.0561433)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.99 using 59 PHA bins.
# Reduced chi-squared = 0.7816 for 55 degrees of freedom
# Null hypothesis probability = 8.803004e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.799e-07 1.420e-08
25- 50 5.426e-07 2.390e-08
50-150 2.030e-06 9.350e-08
15-150 2.752e-06 1.100e-07
Plot creation:
Fri Jan 3 09:17:27 EST 2014