batgrbproduct Analysis for Trigger=602803
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 Jun 29 00:21:38 EDT 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger602803/GCN5_download_cron
======================================================================
Trigger: 00602803 Segment: 000
BAT Trigger Time: 425655349.568 [s; MET]
Trigger Stop: 425655350.08 [s; MET]
UTC: 2014-06-28T13:35:37.371060 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 40.6610673055839 Dec: -0.366404468200361 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.01
Image Trigger?: NO
Rate S/N Ratio: 17.0880074906351 [ if not an image trigger ]
Image S/N Ratio: 9.01
Flight Position: [ source = BAT ]
RA: 40.6610673055839 Dec: -0.366404468200361 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 40.6700604308594 Dec: -0.378020653220664 [deg; J2000]
{ 02h 42m 40.8s , -00d 22' 40.9" }
+/- 0.951629017580702 [arcmin] (estimated 90% radius based on SNR)
+/- 0.316398416425001 [arcmin] (formal 1-sigma fit error)
SNR: 32.6496734820471
Angular difference between Flight and Ground position is 0.881426 arcmin
Partial Coding Fraction: 0.734375 [ including projection effects ]
Duration
T90: 10.5359999537468 +/- 0.875716864048015
Measured from: -0.359999895095825
to: 10.176000058651 [s; relative to TRIGTIME]
T50: 4.92799991369247 +/- 0.623448508956196
Measured from: 1.26800012588501
to: 6.19600003957748 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.944000005722046
to: 1.94400000572205 [s; relative to TRIGTIME]
Total Fluence
Measured from: -1.24000000953674
to: 11.1159999966621 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.572530 0.826260 0.601850 0.111892
0.029665 0.032890 0.031438 0.032805 [error]
Peak 0.071766 0.128645 0.117400 0.027185
0.008947 0.010281 0.009831 0.009402 [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 1.90e-07 3.38e-07 4.60e-07 1.29e-06 1.33e-06 2.28e-06 erg/cm2
Error 1.57e-08 1.68e-08 3.12e-08 1.89e-07 7.39e-08 2.13e-07 erg/cm2
Peak flux Power-law 7.56e-01 8.91e-01 7.57e-01 1.09e+00 2.79e+00 3.49e+00 ph/cm2/s
Error 1.15e-01 8.52e-02 7.81e-02 2.29e-01 2.44e-01 3.25e-01 ph/cm2/s
Fluence Cutoff-PL 1.78e-07 3.52e-07 4.66e-07 6.75e-07 1.28e-06 1.67e-06 erg/cm2
Error 1.86e-08 2.09e-08 3.32e-08 3.83e-07 8.73e-08 3.90e-07 erg/cm2
Peak flux Cutoff-PL 5.74e-01 9.95e-01 8.41e-01 3.21e-01 2.64e+00 2.73e+00 ph/cm2/s
Error 1.41e-01 1.07e-01 9.56e-02 1.92e-01 2.55e-01 3.14e-01 ph/cm2/s
Fluence Band 1.69e-07 3.61e-07 4.48e-07 1.06e-06 1.29e-06 2.04e-06 erg/cm2
Error 2.03e-08 2.38e-08 3.32e-08 3.77e-07 8.06e-08 -------- 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 1.555 0.089 - - 1.14e-02 5.77e-04 48.660 57
CPL 1.141 0.373 99.6 144.8 1.87e-02 8.61e-03 44.680 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.235 0.141 - - 2.37e-02 2.05e-03 59.900 57
CPL -0.157 0.788 79.2 22.5 1.14e-01 1.20e-01 47.200 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: 9.792000 sec.
T50 in the 50-300 keV band: 4.224000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 12.356 -1.240 11.116
T90 10.536 -0.360 10.176
T50 4.928 1.268 6.196
Peak 1.000 0.944 1.944
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
40.6701 -0.3780 0.0059 30.1 170.3 2.0809 32.6 TRIG_00602803
------------------------------------------
Foreground time interval of the image:
-1.240 9.233 (delta_t = 10.473 [sec])
Background time interval of the image:
-119.568 -1.240 (delta_t = 118.328 [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 -1.240 sec. to 11.116 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.55507 ( -0.0882194 0.088924 )
Norm@50keV : 1.14395E-02 ( -0.000577817 0.000575339 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.66 using 59 PHA bins.
# Reduced chi-squared = 0.8536 for 57 degrees of freedom
# Null hypothesis probability = 7.763605e-01
Photon flux (15-150 keV) in 12.36 sec: 1.45031 ( -0.0708001 0.0708646 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.33013e-06 ( -7.36461e-08 7.41952e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -1.240 sec. to 11.116 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.14118 ( -0.389913 0.356271 )
Epeak [keV] : 99.5652 ( -27.4318 262.19 )
Norm@50keV : 1.87391E-02 ( -0.00635207 0.0108627 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.68 using 59 PHA bins.
# Reduced chi-squared = 0.7978 for 56 degrees of freedom
# Null hypothesis probability = 8.616720e-01
Photon flux (15-150 keV) in 12.36 sec: 1.41659 ( -0.07617 0.07623 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.27624e-06 ( -8.71887e-08 8.73234e-08 ) ergs/cm2
Band function
Time interval is from -1.240 sec. to 11.116 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -4.24011E-02 ( -0.803395 5.46574 )
beta : -1.72952 ( 1.73767 0.169665 )
Epeak [keV] : 44.3307 ( -17.5665 53.3634 )
Norm@50keV : 0.101132 ( -0.0992657 374.991 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 42.36 using 59 PHA bins.
# Reduced chi-squared = 0.7702 for 55 degrees of freedom
# Null hypothesis probability = 8.938211e-01
Photon flux (15-150 keV) in 12.36 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 1.28586e-06 ( -1.28577e-06 -8.07046e-08 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 13.7226 ( )
R^2/D10^2 : 0.218350 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 119.10 using 59 PHA bins.
# Reduced chi-squared = 2.0895 for 57 degrees of freedom
# Null hypothesis probability = 2.798679e-06
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.075e-07 9.455e-09
25- 50 3.920e-07 2.546e-08
50-150 4.810e-07 4.635e-08
15-150 9.805e-07 5.531e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 194.207 ( )
Norm : 5.89322 (-0.2886 0.31213)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.83 using 59 PHA bins.
# Reduced chi-squared = 0.7864 for 57 degrees of freedom
# Null hypothesis probability = 8.789070e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.815e-07 1.131e-08
25- 50 3.489e-07 3.214e-08
50-150 7.636e-07 2.088e-07
15-150 1.294e-06 2.510e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.78773 (-1.2769 1.34211)
R1^2/D10^2 : 1.08813 (-0.413107 0.816575)
kT2 [keV] : 27.7415 (-5.57158 10.4988)
R2^2/D10^2 : 1.34001E-02 (-0.00883041 0.017447)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.68 using 59 PHA bins.
# Reduced chi-squared = 0.7942 for 55 degrees of freedom
# Null hypothesis probability = 8.640458e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.654e-07 2.497e-08
25- 50 3.658e-07 5.698e-08
50-150 7.536e-07 2.296e-07
15-150 1.285e-06 4.024e-07
Peak spectrum fit
Power-law model
Time interval is from 0.944 sec. to 1.944 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.23515 ( -0.141584 0.141183 )
Norm@50keV : 2.36624E-02 ( -0.00205525 0.00205363 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.90 using 59 PHA bins.
# Reduced chi-squared = 1.051 for 57 degrees of freedom
# Null hypothesis probability = 3.710575e-01
Photon flux (15-150 keV) in 1 sec: 2.79202 ( -0.243632 0.243802 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.37745e-07 ( -2.32546e-08 2.34701e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.944 sec. to 1.944 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.157458 ( -0.859755 0.7164 )
Epeak [keV] : 79.2158 ( -13.3429 31.5828 )
Norm@50keV : 0.114370 ( -0.06248 0.177904 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.20 using 59 PHA bins.
# Reduced chi-squared = 0.8428 for 56 degrees of freedom
# Null hypothesis probability = 7.927504e-01
Photon flux (15-150 keV) in 1 sec: 2.64413 ( -0.2556 0.25521 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.15446e-07 ( -2.5225e-08 2.5919e-08 ) ergs/cm2
Band function
Time interval is from 0.944 sec. to 1.944 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.157629 ( -0.565539 0.626105 )
beta : -10.00000 ( 10 20 )
Epeak [keV] : 79.2009 ( -10.0352 31.5761 )
Norm@50keV : 0.114404 ( -0.0097093 0.0757083 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.20 using 59 PHA bins.
# Reduced chi-squared = 0.8581 for 55 degrees of freedom
# Null hypothesis probability = 7.636297e-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] : 17.0025 (-1.55808 1.76919)
R^2/D10^2 : 0.227610 (-0.0647745 0.0873483)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.68 using 59 PHA bins.
# Reduced chi-squared = 0.9242 for 57 degrees of freedom
# Null hypothesis probability = 6.377846e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.340e-08 2.300e-09
25- 50 5.930e-08 7.295e-09
50-150 1.224e-07 1.873e-08
15-150 1.951e-07 2.055e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 11.4437 (-0.999295 0.999264)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.90 using 59 PHA bins.
# Reduced chi-squared = 1.191 for 57 degrees of freedom
# Null hypothesis probability = 1.530009e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.850e-08 4.350e-09
25- 50 5.482e-08 2.234e-08
50-150 1.202e-07 6.468e-08
15-150 2.036e-07 7.453e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.76802 (-4.58454 -6.77986)
R1^2/D10^2 : 1.36798 (-1.13817 207.582)
kT2 [keV] : 20.1606 (-3.43842 -20.1774)
R2^2/D10^2 : 0.113562 (-0.112652 0.10074)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.35 using 59 PHA bins.
# Reduced chi-squared = 0.8609 for 55 degrees of freedom
# Null hypothesis probability = 7.587064e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.858e-08 9.771e-09
25- 50 5.686e-08 2.355e-08
50-150 1.358e-07 6.762e-08
15-150 2.112e-07 1.030e-07
Plot creation:
Sun Jun 29 00:25:58 EDT 2014