batgrbproduct Analysis for Trigger=603866
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 10 03:33:31 EDT 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger603866/GCN5_download_cron
======================================================================
Trigger: 00603866 Segment: 000
BAT Trigger Time: 426611757.248 [s; MET]
Trigger Stop: 426611761.344 [s; MET]
UTC: 2014-07-09T15:15:45.004740 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 146.070957947034 Dec: 63.5055176990785 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.65
Image Trigger?: NO
Rate S/N Ratio: 8.54400374531753 [ if not an image trigger ]
Image S/N Ratio: 9.65
Flight Position: [ source = BAT ]
RA: 146.070957947034 Dec: 63.5055176990785 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 146.051589227282 Dec: 63.5337288696578 [deg; J2000]
{ 09h 44m 12.4s , +63d 32' 01.4" }
+/- 0.909802707831657 [arcmin] (estimated 90% radius based on SNR)
+/- 0.262591835193181 [arcmin] (formal 1-sigma fit error)
SNR: 34.8149039462001
Angular difference between Flight and Ground position is 1.770210 arcmin
Partial Coding Fraction: 0.9921875 [ including projection effects ]
Duration
T90: 154.999999940395 +/- 21.5480207972023
Measured from: -4.48399990797043
to: 150.516000032425 [s; relative to TRIGTIME]
T50: 90.4479999542236 +/- 4.67002056142397
Measured from: 20.0440000891685
to: 110.492000043392 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 123.631999969482
to: 124.631999969482 [s; relative to TRIGTIME]
Total Fluence
Measured from: -13.944000005722
to: 197.507999956608 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.395779 2.435040 2.105587 0.558528
0.081941 0.085183 0.075450 0.064579 [error]
Peak 0.031086 0.054302 0.023958 0.009863
0.006026 0.006421 0.005805 0.004333 [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 4.19e-07 9.12e-07 1.56e-06 6.16e-06 4.28e-06 9.06e-06 erg/cm2
Error 3.32e-08 4.22e-08 7.29e-08 6.65e-07 1.85e-07 7.04e-07 erg/cm2
Peak flux Power-law 3.21e-01 3.04e-01 2.00e-01 2.05e-01 9.09e-01 1.03e+00 ph/cm2/s
Error 7.39e-02 4.75e-02 4.41e-02 8.71e-02 1.41e-01 1.67e-01 ph/cm2/s
Fluence Cutoff-PL 3.78e-07 9.38e-07 1.62e-06 3.47e-06 4.16e-06 6.41e-06 erg/cm2
Error 4.19e-08 4.70e-08 8.40e-08 1.29e-06 2.04e-07 1.29e-06 erg/cm2
Peak flux Cutoff-PL 2.82e-01 3.57e-01 1.97e-01 4.17e-02 8.70e-01 8.78e-01 ph/cm2/s
Error 8.62e-02 7.65e-02 6.41e-02 1.00e-01 1.49e-01 1.72e-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 1.224 0.072 - - 2.01e-03 7.89e-05 54.960 57
CPL 0.785 0.303 152.6 110.5 3.19e-03 1.01e-03 48.180 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.602 0.259 - - 7.07e-03 1.22e-03 54.430 57
CPL 0.237 1.883 54.5 179.3 4.29e-02 6.21e-01 51.460 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: 133.056000 sec.
T50 in the 50-300 keV band: 73.152000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 211.452 -13.944 197.508
T90 155.000 -4.484 150.516
T50 90.448 20.044 110.492
Peak 1.000 123.632 124.632
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
146.0516 +63.5337 0.0055 10.4 -125.2 3.7299 34.8 TRIG_00603866
------------------------------------------
Foreground time interval of the image:
-13.944 48.853 (delta_t = 62.797 [sec])
Background time interval of the image:
-239.248 -13.944 (delta_t = 225.304 [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 -13.944 sec. to 197.508 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.22432 ( -0.0721762 0.0718118 )
Norm@50keV : 2.00744E-03 ( -7.88957e-05 7.88881e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.96 using 59 PHA bins.
# Reduced chi-squared = 0.9642 for 57 degrees of freedom
# Null hypothesis probability = 5.520873e-01
Photon flux (15-150 keV) in 211.5 sec: 0.236471 ( -0.00974665 0.00976509 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.2785e-06 ( -1.84204e-07 1.84785e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -13.944 sec. to 197.508 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.785327 ( -0.313539 0.292421 )
Epeak [keV] : 152.627 ( -41.5697 179.432 )
Norm@50keV : 3.18767E-03 ( -0.000826087 0.00120369 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.18 using 59 PHA bins.
# Reduced chi-squared = 0.8603 for 56 degrees of freedom
# Null hypothesis probability = 7.620349e-01
Photon flux (15-150 keV) in 211.5 sec: 0.230460 ( -0.010473 0.010484 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.15547e-06 ( -2.04647e-07 2.03463e-07 ) ergs/cm2
Band function
Time interval is from -13.944 sec. to 197.508 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.785784 ( -0.652385 1.68784 )
beta : -10.0000 ( 10 1.7053e-13 )
Epeak [keV] : 152.698 ( -23.5717 179.87 )
Norm@50keV : 3.18609E-03 ( -0.000824736 0.00120542 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.18 using 59 PHA bins.
# Reduced chi-squared = 0.8760 for 55 degrees of freedom
# Null hypothesis probability = 7.307940e-01
Photon flux (15-150 keV) in 211.5 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] : 18.8939 ( )
R^2/D10^2 : 1.28729E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 136.88 using 59 PHA bins.
# Reduced chi-squared = 2.4013 for 57 degrees of freedom
# Null hypothesis probability = 1.608846e-08
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.914e-07 1.632e-08
25- 50 9.171e-07 5.404e-08
50-150 2.403e-06 1.766e-07
15-150 3.512e-06 1.681e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 0.990346 (-0.0395143 0.0395014)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 109.02 using 59 PHA bins.
# Reduced chi-squared = 1.9127 for 57 degrees of freedom
# Null hypothesis probability = 4.087843e-05
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.215e-07 2.369e-08
25- 50 1.003e-06 4.431e-08
50-150 2.200e-06 9.507e-08
15-150 3.725e-06 1.597e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.55901 (-1.45312 1.6041)
R1^2/D10^2 : 9.67295E-02 (-0.0372782 0.0737426)
kT2 [keV] : 30.5108 (-4.33309 7.11658)
R2^2/D10^2 : 2.15870E-03 (-0.00109588 0.00156465)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.12 using 59 PHA bins.
# Reduced chi-squared = 0.8749 for 55 degrees of freedom
# Null hypothesis probability = 7.328293e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.495e-07 6.609e-08
25- 50 9.651e-07 1.231e-07
50-150 2.851e-06 5.115e-07
15-150 4.165e-06 6.789e-07
Peak spectrum fit
Power-law model
Time interval is from 123.632 sec. to 124.632 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.60185 ( -0.253484 0.264488 )
Norm@50keV : 7.07233E-03 ( -0.00122972 0.00120585 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.43 using 59 PHA bins.
# Reduced chi-squared = 0.9550 for 57 degrees of freedom
# Null hypothesis probability = 5.719560e-01
Photon flux (15-150 keV) in 1 sec: 0.909347 ( -0.140801 0.140808 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.61295e-08 ( -1.22157e-08 1.25352e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 123.632 sec. to 124.632 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.237085 ( -2.42264 1.34435 )
Epeak [keV] : 54.5101 ( -14.1606 344.388 )
Norm@50keV : 4.29355E-02 ( -0.0430789 1.19926 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.46 using 59 PHA bins.
# Reduced chi-squared = 0.9189 for 56 degrees of freedom
# Null hypothesis probability = 6.472133e-01
Photon flux (15-150 keV) in 1 sec: 0.870423 ( -0.149663 0.147647 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.71051e-08 ( -1.43517e-08 1.55819e-08 ) ergs/cm2
Band function
Time interval is from 123.632 sec. to 124.632 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.874950 ( -1.86684 -0.904392 )
beta : -2.36679 ( 2.36958 0.716727 )
Epeak [keV] : 43.5172 ( -15.373 29.6425 )
Norm@50keV : 0.224462 ( -0.261773 85.0246 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.33 using 59 PHA bins.
# Reduced chi-squared = 0.8969 for 55 degrees of freedom
# Null hypothesis probability = 6.900880e-01
Photon flux (15-150 keV) in 1 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 5.95346e-08 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 11.4839 (-1.76462 2.2108)
R^2/D10^2 : 0.274874 (-0.129857 0.22742)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.34 using 59 PHA bins.
# Reduced chi-squared = 0.9357 for 57 degrees of freedom
# Null hypothesis probability = 6.133464e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.630e-09 2.167e-09
25- 50 2.278e-08 5.140e-09
50-150 1.752e-08 6.580e-09
15-150 4.792e-08 1.087e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 149.910 (-72.8246 -147.721)
Norm : 3.80067 (-0.619118 0.805926)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.87 using 59 PHA bins.
# Reduced chi-squared = 0.9276 for 57 degrees of freedom
# Null hypothesis probability = 6.305523e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.762e-09 5.335e-09
25- 50 1.809e-08 9.900e-09
50-150 3.570e-08 2.128e-08
15-150 6.356e-08 3.614e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.76418 (-1.44466 2.52985)
R1^2/D10^2 : 0.434441 (-0.199111 0.493412)
kT2 [keV] : 59.5235 (-34.96 -52.4915)
R2^2/D10^2 : 6.13424E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.29 using 59 PHA bins.
#Fit statistic : Chi-Squared = 48.25 using 59 PHA bins.
# Reduced chi-squared = 0.8780 for 55 degrees of freedom
# Reduced chi-squared = 0.8773 for 55 degrees of freedom
# Null hypothesis probability = 7.269615e-01
# Null hypothesis probability = 7.281889e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.649e-09 3.722e-09
25- 50 2.159e-08 1.148e-08
50-150 3.298e-08 1.592e-08
15-150 6.322e-08 2.617e-08
Plot creation:
Thu Jul 10 03:37:35 EDT 2014