batgrbproduct Analysis for Trigger=563213
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): Tue Jul 23 17:12:49 EDT 2013
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger563213/batgroup_hand_proc
======================================================================
Trigger: 00563213 Segment: 000
BAT Trigger Time: 396173970.048 [s; MET]
Trigger Stop: 396173972.096 [s; MET]
UTC: 2013-07-22T08:19:19.228240 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 260.669809204394 Dec: -2.97920903466256 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.67
Image Trigger?: NO
Rate S/N Ratio: 6.2449979983984 [ if not an image trigger ]
Image S/N Ratio: 7.67
Flight Position: [ source = BAT ]
RA: 260.669809204394 Dec: -2.97920903466256 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 260.669223149202 Dec: -2.95655987956638 [deg; J2000]
{ 17h 22m 40.6s , -02d 57' 23.6" }
+/- 1.32317940744802 [arcmin] (estimated 90% radius based on SNR)
+/- 0.537640330350079 [arcmin] (formal 1-sigma fit error)
SNR: 20.3881270998206
Angular difference between Flight and Ground position is 1.359403 arcmin
Partial Coding Fraction: 0.4882812 [ including projection effects ]
Duration
T90: 97.5279999375343 +/- 18.7139235166515
Measured from: 8.42400014400482
to: 105.952000081539 [s; relative to TRIGTIME]
T50: 36.0199999213219 +/- 0.866671782070127
Measured from: 42.3720001578331
to: 78.392000079155 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 70.2840000391006
to: 71.2840000391006 [s; relative to TRIGTIME]
Total Fluence
Measured from: -3.96399998664856
to: 252.992000043392 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 5.252037 7.383188 5.825986 1.623033
0.109742 0.104367 0.089859 0.073098 [error]
Peak 0.160248 0.278524 0.237263 0.062422
0.007961 0.008737 0.008051 0.005597 [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 1.89e-06 3.33e-06 4.48e-06 1.24e-05 1.30e-05 2.21e-05 erg/cm2
Error 7.94e-08 8.07e-08 9.82e-08 6.41e-07 2.51e-07 6.73e-07 erg/cm2
Peak flux Power-law 2.03e+00 2.11e+00 1.54e+00 1.82e+00 6.39e+00 7.51e+00 ph/cm2/s
Error 1.40e-01 8.88e-02 6.54e-02 1.60e-01 2.48e-01 2.72e-01 ph/cm2/s
Fluence Cutoff-PL 1.83e-06 3.34e-06 4.54e-06 1.08e-05 1.29e-05 2.05e-05 erg/cm2
Error 1.03e-07 8.30e-08 1.17e-07 1.81e-06 2.72e-07 2.18e-06 erg/cm2
Peak flux Cutoff-PL 1.79e+00 2.18e+00 1.64e+00 1.12e+00 6.22e+00 6.73e+00 ph/cm2/s
Error 1.76e-01 9.84e-02 8.02e-02 2.63e-01 2.61e-01 3.81e-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 1.72e+00 2.22e+00 1.60e+00 7.00e+00 0.00e+00 0.00e+00 ph/cm2/s
Error 2.24e-01 1.27e-01 3.56e-01 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 1.570 0.037 - - 5.42e-03 1.05e-04 38.010 57
CPL 1.449 0.142 268.2 -76.1 6.10e-03 8.37e-04 36.050 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 1.450 0.063 - - 5.19e-02 1.88e-03 64.390 57
CPL 0.919 0.273 111.7 38.2 9.16e-02 2.66e-02 52.020 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: 81.280000 sec.
T50 in the 50-300 keV band: 31.872000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 256.956 -3.964 252.992
T90 97.528 8.424 105.952
T50 36.020 42.372 78.392
Peak 1.000 70.284 71.284
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
260.6692 -2.9566 0.0095 40.9695 -5.5939 1.8226377 20.388 TRIG_00563213
Foreground time interval of the image:
-3.964 22.753 (delta_t = 26.717 [sec])
Background time interval of the image:
-239.048 -228.008 (delta_t = 11.040 [sec])
-227.048 -3.964 (delta_t = 223.084 [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
Multiple GTIs in the spectrum
tstart tstop
-3.964000 66.819800
67.952000 252.992000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.56979 ( -0.0369178 0.0368701 )
Norm@50keV : 5.41826E-03 ( -0.000104849 0.000104781 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.01 using 59 PHA bins.
# Reduced chi-squared = 0.6669 for 57 degrees of freedom
# Null hypothesis probability = 9.751134e-01
Photon flux (15-150 keV) in 255.8 sec: 0.689914 ( -0.0162188 0.0162962 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.30122e-05 ( -2.50697e-07 2.50737e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-3.964000 66.819800
67.952000 252.992000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.44940 ( -0.15069 0.133134 )
Epeak [keV] : 268.200 ( -116.046 -268.2 )
Norm@50keV : 6.10189E-03 ( -0.000722494 0.000951204 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 36.05 using 59 PHA bins.
# Reduced chi-squared = 0.6438 for 56 degrees of freedom
# Null hypothesis probability = 9.823854e-01
Photon flux (15-150 keV) in 255.8 sec: 0.682098 ( -0.018478 0.018573 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.29317e-05 ( -2.72222e-07 2.71276e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-3.964000 66.819800
67.952000 252.992000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.02589 ( -0.549088 2.18807 )
beta : -1.60904 ( 1.60888 0.0558318 )
Epeak [keV] : 68.0177 ( -33.8669 1621.01 )
Norm@50keV : 1.11194E-02 ( -0.00484814 0.11155 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 34.83 using 59 PHA bins.
# Reduced chi-squared = 0.6332 for 55 degrees of freedom
# Null hypothesis probability = 9.846443e-01
Photon flux (15-150 keV) in 255.8 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] : 17.7442 ( )
R^2/D10^2 : 4.04915E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 621.42 using 59 PHA bins.
# Reduced chi-squared = 10.902 for 57 degrees of freedom
# Null hypothesis probability = 7.614413e-96
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.559e-07 2.801e-08
25- 50 3.001e-06 8.825e-08
50-150 6.832e-06 2.174e-07
15-150 1.049e-05 2.238e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 2.79059 (-0.0534489 0.0534474)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 45.44 using 59 PHA bins.
# Reduced chi-squared = 0.7972 for 57 degrees of freedom
# Null hypothesis probability = 8.648817e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.778e-06 4.016e-08
25- 50 3.420e-06 8.569e-08
50-150 7.501e-06 1.816e-07
15-150 1.270e-05 2.929e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.99043 (-0.567742 0.595475)
R1^2/D10^2 : 0.453338 (-0.0992974 0.135371)
kT2 [keV] : 30.0867 (-2.12451 2.61636)
R2^2/D10^2 : 5.03114E-03 (-0.00129528 0.00154938)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.66 using 59 PHA bins.
# Reduced chi-squared = 0.8666 for 55 degrees of freedom
# Null hypothesis probability = 7.481816e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.520e-06 1.064e-07
25- 50 3.460e-06 1.369e-07
50-150 7.788e-06 3.696e-07
15-150 1.277e-05 4.477e-07
Peak spectrum fit
Power-law model
Time interval is from 70.284 sec. to 71.284 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.44955 ( -0.0627064 0.0628 )
Norm@50keV : 5.18658E-02 ( -0.00187872 0.0018786 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.39 using 59 PHA bins.
# Reduced chi-squared = 1.130 for 57 degrees of freedom
# Null hypothesis probability = 2.338834e-01
Photon flux (15-150 keV) in 1 sec: 6.39103 ( -0.248118 0.248622 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.9636e-07 ( -1.90651e-08 1.90906e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 70.284 sec. to 71.284 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.918535 ( -0.280601 0.26455 )
Epeak [keV] : 111.708 ( -21.1105 55.3773 )
Norm@50keV : 9.15640E-02 ( -0.0220768 0.0311534 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.02 using 59 PHA bins.
# Reduced chi-squared = 0.9290 for 56 degrees of freedom
# Null hypothesis probability = 6.261871e-01
Photon flux (15-150 keV) in 1 sec: 6.21529 ( -0.26035 0.26116 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.84065e-07 ( -2.038e-08 2.03e-08 ) ergs/cm2
Band function
Time interval is from 70.284 sec. to 71.284 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.606891 ( -0.513614 2.4729 )
beta : -1.74179 ( 1.74113 0.209855 )
Epeak [keV] : 79.2199 ( -39.1078 67.5718 )
Norm@50keV : 0.138305 ( -0.0655467 6.72572 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.91 using 59 PHA bins.
# Reduced chi-squared = 0.9256 for 55 degrees of freedom
# Null hypothesis probability = 6.316875e-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] : 16.8166 ( )
R^2/D10^2 : 0.497190 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 177.71 using 59 PHA bins.
# Reduced chi-squared = 3.1177 for 57 degrees of freedom
# Null hypothesis probability = 2.502923e-14
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.872e-08 2.055e-09
25- 50 1.260e-07 5.700e-09
50-150 2.534e-07 1.735e-08
15-150 4.081e-07 1.735e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 26.5875 (-0.96282 0.962705)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.76 using 59 PHA bins.
# Reduced chi-squared = 1.154 for 57 degrees of freedom
# Null hypothesis probability = 1.995252e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.621e-08 2.520e-09
25- 50 1.274e-07 4.950e-09
50-150 2.793e-07 1.095e-08
15-150 4.729e-07 1.840e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.59949 (-1.22878 1.31212)
R1^2/D10^2 : 3.02906 (-1.01208 1.81184)
kT2 [keV] : 29.0257 (-3.98074 6.28244)
R2^2/D10^2 : 5.60052E-02 (-0.0283108 0.0422121)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.55 using 59 PHA bins.
# Reduced chi-squared = 0.9554 for 55 degrees of freedom
# Null hypothesis probability = 5.689168e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.005e-08 6.425e-09
25- 50 1.299e-07 1.375e-08
50-150 3.039e-07 4.800e-08
15-150 4.838e-07 5.940e-08
Plot creation:
Tue Jul 23 17:43:47 EDT 2013