batgrbproduct Analysis for Trigger=599546
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 May 22 13:15:31 EDT 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger599546/GCN5_download_cron
======================================================================
Trigger: 00599546 Segment: 000
BAT Trigger Time: 422386470.528 [s; MET]
Trigger Stop: 422386471.04 [s; MET]
UTC: 2014-05-21T17:34:18.488820 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 320.012929795079 Dec: 67.6017447960794 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.49
Image Trigger?: NO
Rate S/N Ratio: 21 [ if not an image trigger ]
Image S/N Ratio: 7.49
Flight Position: [ source = BAT ]
RA: 320.012929795079 Dec: 67.6017447960794 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 320.177470864869 Dec: 67.5868606353976 [deg; J2000]
{ 21h 20m 42.6s , +67d 35' 12.7" }
+/- 1.10398188266084 [arcmin] (estimated 90% radius based on SNR)
+/- 0.345761652367814 [arcmin] (formal 1-sigma fit error)
SNR: 26.4085265716912
Angular difference between Flight and Ground position is 3.867529 arcmin
Partial Coding Fraction: 0.5546875 [ including projection effects ]
Duration
T90: 9.87999993562698 +/- 1.08849987926491
Measured from: 0.480000138282776
to: 10.3600000739098 [s; relative to TRIGTIME]
T50: 5.40399992465973 +/- 0.545439317004556
Measured from: 1.64800012111664
to: 7.05200004577637 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.643999993801117
to: 1.64399999380112 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0.15200001001358
to: 11.4359999895096 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.348172 0.523942 0.421190 0.134316
0.028207 0.029543 0.025890 0.019979 [error]
Peak 0.045275 0.054087 0.104681 0.051041
0.008370 0.009207 0.009178 0.007323 [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 1.17e-07 2.25e-07 3.37e-07 1.08e-06 9.48e-07 1.76e-06 erg/cm2
Error 1.31e-08 1.50e-08 2.57e-08 1.84e-07 6.30e-08 2.00e-07 erg/cm2
Peak flux Power-law 3.01e-01 5.01e-01 6.33e-01 1.60e+00 1.88e+00 3.03e+00 ph/cm2/s
Error 8.73e-02 8.78e-02 6.97e-02 4.10e-01 2.22e-01 4.02e-01 ph/cm2/s
Fluence Cutoff-PL 1.17e-07 2.25e-07 3.35e-07 9.44e-07 0.00e+00 0.00e+00 erg/cm2
Error 1.30e-08 1.59e-08 2.57e-08 6.46e-08 0.00e+00 0.00e+00 erg/cm2
Peak flux Cutoff-PL 3.02e-01 5.03e-01 1.88e+00 3.02e+00 0.00e+00 0.00e+00 ph/cm2/s
Error 2.21e-01 5.66e-01 0.00e+00 0.00e+00 0.00e+00 0.00e+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 1.422 0.109 - - 8.74e-03 5.30e-04 53.830 57
CPL 1.422 0.226 9999.4 0.0 8.74e-03 2.24e-03 53.840 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 0.663 0.218 - - 1.62e-02 2.07e-03 56.560 57
CPL 0.661 0.495 9999.4 0.0 1.64e-02 7.62e-03 56.580 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: 7.168000 sec.
T50 in the 50-300 keV band: 3.712000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 11.284 0.152 11.436
T90 9.880 0.480 10.360
T50 5.404 1.648 7.052
Peak 1.000 0.644 1.644
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
320.1775 +67.5869 0.0073 30.3 -123.6 1.5579 26.4 TRIG_00599546
------------------------------------------
Foreground time interval of the image:
0.152 11.436 (delta_t = 11.284 [sec])
Background time interval of the image:
-34.327 0.152 (delta_t = 34.479 [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 0.152 sec. to 11.436 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.42177 ( -0.10866 0.108493 )
Norm@50keV : 8.73759E-03 ( -0.000530045 0.000529247 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.83 using 59 PHA bins.
# Reduced chi-squared = 0.9443 for 57 degrees of freedom
# Null hypothesis probability = 5.949372e-01
Photon flux (15-150 keV) in 11.28 sec: 1.06945 ( -0.0673607 0.0675268 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.48216e-07 ( -6.28501e-08 6.32247e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.152 sec. to 11.436 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.42165 ( -0.343837 0.107492 )
Epeak [keV] : 9999.35 ( -9999.36 -9999.36 )
Norm@50keV : 8.73905E-03 ( -0.000531125 0.00394175 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.84 using 59 PHA bins.
# Reduced chi-squared = 0.9615 for 56 degrees of freedom
# Null hypothesis probability = 5.569933e-01
Photon flux (15-150 keV) in 11.28 sec: 1.06975 ( -0.06799 0.06684 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.44037e-07 ( -6.62677e-08 6.29029e-08 ) ergs/cm2
Band function
Time interval is from 0.152 sec. to 11.436 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.29618 ( -4.16464 -4.16464 )
beta : -1.48079 ( -0.143212 0.119998 )
Epeak [keV] : 31.0925 ( -24.9425 108.298 )
Norm@50keV : 0.858718 ( -0.848555 351.809 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.54 using 59 PHA bins.
# Reduced chi-squared = 0.9552 for 55 degrees of freedom
# Null hypothesis probability = 5.693581e-01
Photon flux (15-150 keV) in 11.28 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] : 16.3014 ( )
R^2/D10^2 : 8.98743E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 135.17 using 59 PHA bins.
# Reduced chi-squared = 2.3714 for 57 degrees of freedom
# Null hypothesis probability = 2.693475e-08
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.546e-08 6.514e-09
25- 50 2.371e-07 2.059e-08
50-150 4.435e-07 4.783e-08
15-150 7.360e-07 5.217e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 4.42023 (-0.267342 0.267318)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.44 using 59 PHA bins.
# Reduced chi-squared = 1.060 for 57 degrees of freedom
# Null hypothesis probability = 3.525783e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.242e-07 7.896e-09
25- 50 2.388e-07 1.816e-08
50-150 5.238e-07 1.122e-07
15-150 8.868e-07 1.198e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.59522 (-1.25854 1.463)
R1^2/D10^2 : 0.885386 (-0.387593 0.764367)
kT2 [keV] : 33.8508 (-6.89116 13.6087)
R2^2/D10^2 : 6.26756E-03 (-0.00396837 0.00709888)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.40 using 59 PHA bins.
# Reduced chi-squared = 0.9527 for 55 degrees of freedom
# Null hypothesis probability = 5.746077e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.117e-07 2.060e-08
25- 50 2.353e-07 4.315e-08
50-150 6.148e-07 1.707e-07
15-150 9.618e-07 2.684e-07
Peak spectrum fit
Power-law model
Time interval is from 0.644 sec. to 1.644 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.662633 ( -0.224008 0.211593 )
Norm@50keV : 1.62246E-02 ( -0.00209908 0.00203465 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.56 using 59 PHA bins.
# Reduced chi-squared = 0.9923 for 57 degrees of freedom
# Null hypothesis probability = 4.914680e-01
Photon flux (15-150 keV) in 1 sec: 1.88150 ( -0.221218 0.222298 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.01449e-07 ( -2.3039e-08 2.30919e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.644 sec. to 1.644 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.661201 ( -0.78186 0.20762 )
Epeak [keV] : 9999.36 ( -9999.36 -9999.36 )
Norm@50keV : 1.63758E-02 ( -0.00196322 0.0132852 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.58 using 59 PHA bins.
# Reduced chi-squared = 1.010 for 56 degrees of freedom
# Null hypothesis probability = 4.532304e-01
Photon flux (15-150 keV) in 1 sec: 1.88305 ( -0.22332 0.21933 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.644 sec. to 1.644 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.920570 ( 0.92057 0.92057 )
beta : -0.662633 ( -0.211657 0.224387 )
Epeak [keV] : 12.4217 ( -12.4217 -12.4217 )
Norm@50keV : 2.48628E-02 ( -0.010684 0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.56 using 59 PHA bins.
# Reduced chi-squared = 1.028 for 55 degrees of freedom
# Null hypothesis probability = 4.164437e-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] : 32.9943 (-5.10643 7.00624)
R^2/D10^2 : 2.23883E-02 (-0.00905931 0.0136211)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.84 using 59 PHA bins.
# Reduced chi-squared = 1.155 for 57 degrees of freedom
# Null hypothesis probability = 1.976603e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.590e-09 9.290e-10
25- 50 2.298e-08 4.415e-09
50-150 1.692e-07 3.035e-08
15-150 1.958e-07 3.430e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 7.49340 (-0.924838 0.924784)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 106.04 using 59 PHA bins.
# Reduced chi-squared = 1.8604 for 57 degrees of freedom
# Null hypothesis probability = 8.679638e-05
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.866e-08 1.054e-08
25- 50 3.590e-08 1.951e-08
50-150 7.874e-08 4.384e-08
15-150 1.333e-07 7.450e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.35045 (-1.59138 2.66473)
R1^2/D10^2 : 7.91721 (-6.91349 74.6603)
kT2 [keV] : 38.4083 (-6.97889 11.3501)
R2^2/D10^2 : 1.42301E-02 (-0.00693943 0.0105494)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.02 using 59 PHA bins.
# Reduced chi-squared = 0.9277 for 55 degrees of freedom
# Null hypothesis probability = 6.272921e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.345e-08 6.868e-09
25- 50 2.365e-08 6.840e-09
50-150 1.707e-07 4.363e-08
15-150 2.078e-07 4.855e-08
Plot creation:
Thu May 22 13:20:25 EDT 2014