batgrbproduct Analysis for Trigger=603243
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 Jul 3 18:57:18 EDT 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger603243/batgroup_hand_proc
======================================================================
Trigger: 00603243 Segment: 000
BAT Trigger Time: 426040649.28 [s; MET]
Trigger Stop: 426040651.328 [s; MET]
UTC: 2014-07-03T00:37:17.064400 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 12.9899510964298 Dec: 45.0946269766034 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.54
Image Trigger?: NO
Rate S/N Ratio: 17.8605710994918 [ if not an image trigger ]
Image S/N Ratio: 7.54
Flight Position: [ source = BAT ]
RA: 12.9899510964298 Dec: 45.0946269766034 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 13.0094309035075 Dec: 45.1012626750029 [deg; J2000]
{ 00h 52m 02.3s , +45d 06' 04.5" }
+/- 1.61256353393099 [arcmin] (estimated 90% radius based on SNR)
+/- 0.564274491735776 [arcmin] (formal 1-sigma fit error)
SNR: 15.369713043627
Angular difference between Flight and Ground position is 0.916087 arcmin
Partial Coding Fraction: 0.140625 [ including projection effects ]
Duration
T90: 69.9039999246597 +/- 66.3728895394516
Measured from: -1.41999995708466
to: 68.4839999675751 [s; relative to TRIGTIME]
T50: 35.1079999804497 +/- 9.42803652575389
Measured from: 2.54000002145767
to: 37.6480000019073 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.360000014305115
to: 1.36000001430511 [s; relative to TRIGTIME]
Total Fluence
Measured from: -2.52399998903275
to: 134.840000033379 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.686456 2.149879 1.465113 0.539184
0.141342 0.143089 0.124749 0.104344 [error]
Peak 0.063732 0.117945 0.125505 0.081836
0.019749 0.021687 0.020200 0.016867 [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 7.39e-07 1.11e-06 1.24e-06 2.62e-06 3.87e-06 5.70e-06 erg/cm2
Error 9.27e-08 8.45e-08 1.27e-07 5.68e-07 3.03e-07 6.70e-07 erg/cm2
Peak flux Power-law 8.04e-01 9.18e-01 7.53e-01 1.03e+00 2.85e+00 3.51e+00 ph/cm2/s
Error 3.04e-01 2.21e-01 1.50e-01 4.13e-01 6.03e-01 6.64e-01 ph/cm2/s
Fluence Cutoff-PL -------- -------- -------- -------- -------- -------- erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Cutoff-PL 6.23e-01 9.66e-01 8.56e-01 -------- 2.76e+00 2.96e+00 ph/cm2/s
Error 3.73e-01 2.52e-01 2.14e-01 -------- 6.13e-01 8.54e-01 ph/cm2/s
Fluence Band -------- -------- -------- -------- -------- -------- erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Band -------- -------- -------- -------- -------- -------- ph/cm2/s
Error -------- -------- -------- -------- -------- -------- ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.839 0.134 - - 3.06e-03 2.37e-04 46.140 57
CPL 1.802 0.638 267.4 0.0 3.20e-03 0.00e+00 46.180 56
The chi2 of BB fit is Chi-Squared Chi-Squared which shows a significant improvement in the fit over a PL.
Check the BB fit.
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.287 0.309 - - 2.39e-02 4.64e-03 46.910 57
CPL 0.323 1.514 101.5 -17.1 6.40e-02 2.03e-01 45.560 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: 74.368000 sec.
T50 in the 50-300 keV band: 20.608000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 137.364 -2.524 134.840
T90 69.904 -1.420 68.484
T50 35.108 2.540 37.648
Peak 1.000 0.360 1.360
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
13.0094 45.1013 0.0125 54.6251 -169.2406 3.6477903 15.370 TRIG_00603243
Foreground time interval of the image:
-2.524 30.621 (delta_t = 33.145 [sec])
Background time interval of the image:
-149.379 -2.524 (delta_t = 146.855 [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 -2.524 sec. to 134.840 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.83902 ( -0.132627 0.135365 )
Norm@50keV : 3.06286E-03 ( -0.000238352 0.000236526 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.14 using 59 PHA bins.
# Reduced chi-squared = 0.8095 for 57 degrees of freedom
# Null hypothesis probability = 8.475921e-01
Photon flux (15-150 keV) in 137.4 sec: 0.428610 ( -0.0338199 0.0339982 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.87019e-06 ( -3.02503e-07 3.03859e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -2.524 sec. to 134.840 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.80213 ( -0.464292 0.811298 )
Epeak [keV] : 267.409 ( )
Norm@50keV : 3.19853E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.18 using 59 PHA bins.
# Reduced chi-squared = 0.8246 for 56 degrees of freedom
# Null hypothesis probability = 8.224959e-01
Photon flux (15-150 keV) in 137.4 sec: 0.428638 ( -0.034891 0.033736 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Time interval is from -2.524 sec. to 134.840 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 3.50748 ( -3.50051 -3.50051 )
beta : -1.86112 ( -0.161476 0.144381 )
Epeak [keV] : 20.7300 ( -20.5339 45.7775 )
Norm@50keV : 85.1816 ( -88.5461 17854.1 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.78 using 59 PHA bins.
# Reduced chi-squared = 0.8323 for 55 degrees of freedom
# Null hypothesis probability = 8.077493e-01
Photon flux (15-150 keV) in 137.4 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] : 12.6675 (-1.20031 1.32961)
R^2/D10^2 : 8.10725E-02 (-0.0254582 0.0369482)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 104.44 using 59 PHA bins.
# Reduced chi-squared = 1.8323 for 57 degrees of freedom
# Null hypothesis probability = 1.291230e-04
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.791e-07 5.063e-08
25- 50 1.269e-06 1.311e-07
50-150 1.268e-06 1.861e-07
15-150 2.916e-06 2.865e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 109.818 (-27.3968 39.7086)
Norm : 1.81647 (-0.186573 0.233723)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.35 using 59 PHA bins.
# Reduced chi-squared = 0.8658 for 57 degrees of freedom
# Null hypothesis probability = 7.542579e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.518e-07 7.784e-08
25- 50 1.148e-06 9.048e-08
50-150 1.958e-06 5.977e-07
15-150 3.757e-06 7.138e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.40657 (-1.50253 1.51334)
R1^2/D10^2 : 0.467805 (-0.223174 0.593432)
kT2 [keV] : 31.1558 (-8.54259 19.1482)
R2^2/D10^2 : 2.14009E-03 (-0.00163962 0.00483543)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.52 using 59 PHA bins.
# Reduced chi-squared = 0.8822 for 55 degrees of freedom
# Null hypothesis probability = 7.188645e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.420e-07 1.678e-07
25- 50 1.185e-06 2.359e-07
50-150 2.028e-06 9.498e-07
15-150 3.856e-06 1.133e-06
Peak spectrum fit
Power-law model
Time interval is from 0.360 sec. to 1.360 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.28726 ( -0.316142 0.301997 )
Norm@50keV : 2.39496E-02 ( -0.00466013 0.00462401 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.91 using 59 PHA bins.
# Reduced chi-squared = 0.8230 for 57 degrees of freedom
# Null hypothesis probability = 8.273342e-01
Photon flux (15-150 keV) in 1 sec: 2.85063 ( -0.598807 0.606402 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.37411e-07 ( -4.56864e-08 4.57416e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.360 sec. to 1.360 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.322849 ( -1.92627 1.10254 )
Epeak [keV] : 101.456 ( -67.23 -101.452 )
Norm@50keV : 6.39960E-02 ( -0.0640005 0.34158 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.56 using 59 PHA bins.
# Reduced chi-squared = 0.8137 for 56 degrees of freedom
# Null hypothesis probability = 8.391185e-01
Photon flux (15-150 keV) in 1 sec: 2.75858 ( -0.60733 0.61906 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.360 sec. to 1.360 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.195450 ( -0.218537 -0.218537 )
beta : -1.81398 ( 1.81653 0.725262 )
Epeak [keV] : 77.2768 ( -76.0592 120.674 )
Norm@50keV : 0.120641 ( -0.13047 177.363 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.25 using 59 PHA bins.
# Reduced chi-squared = 0.8228 for 55 degrees of freedom
# Null hypothesis probability = 8.228263e-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] : 19.2858 (-3.51138 4.76281)
R^2/D10^2 : 0.153656 (-0.0838099 0.157675)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.03 using 59 PHA bins.
# Reduced chi-squared = 0.8426 for 57 degrees of freedom
# Null hypothesis probability = 7.955555e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.117e-08 4.167e-09
25- 50 5.430e-08 1.787e-08
50-150 1.489e-07 5.346e-08
15-150 2.143e-07 5.910e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 12.3986 (-2.38034 2.37968)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.84 using 59 PHA bins.
# Reduced chi-squared = 0.8569 for 57 degrees of freedom
# Null hypothesis probability = 7.705880e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.088e-08 1.791e-08
25- 50 5.940e-08 3.483e-08
50-150 1.303e-07 7.545e-08
15-150 2.205e-07 1.285e-07
Double BB
R1^2/D10^2 : 1.98372E-03 ( )
kT2 [keV] : 14.1019 (-14.1283 6.28442)
R2^2/D10^2 : 0.344790 (-0.342402 -0.342402)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.37 using 59 PHA bins.
#Fit statistic : Chi-Squared = 45.35 using 59 PHA bins.
#Fit statistic : Chi-Squared = 45.34 using 59 PHA bins.
# Reduced chi-squared = 0.8249 for 55 degrees of freedom
# Reduced chi-squared = 0.8246 for 55 degrees of freedom
# Reduced chi-squared = 0.8243 for 55 degrees of freedom
# Null hypothesis probability = 8.194412e-01
# Null hypothesis probability = 8.200130e-01
# Null hypothesis probability = 8.203769e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.560e-08 9.900e-09
25- 50 5.966e-08 3.687e-08
50-150 1.559e-07 8.360e-08
15-150 2.312e-07 1.270e-07
Plot creation:
Thu Jul 3 19:20:54 EDT 2014