batgrbproduct Analysis for Trigger=590206
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): Wed Mar 5 02:38:23 EST 2014
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger590206/GCN5_download_cron
======================================================================
Trigger: 00590206 Segment: 000
BAT Trigger Time: 415632162.816 [s; MET]
Trigger Stop: 415632163.84 [s; MET]
UTC: 2014-03-04T13:22:31.098380 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 30.668351779433 Dec: 33.4854421100489 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 11.82
Image Trigger?: NO
Rate S/N Ratio: 25.6124969497314 [ if not an image trigger ]
Image S/N Ratio: 11.82
Flight Position: [ source = BAT ]
RA: 30.668351779433 Dec: 33.4854421100489 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 30.6533057491657 Dec: 33.479822122111 [deg; J2000]
{ 02h 02m 36.8s , +33d 28' 47.4" }
+/- 0.987930799445793 [arcmin] (estimated 90% radius based on SNR)
+/- 0.258910822720168 [arcmin] (formal 1-sigma fit error)
SNR: 30.9493773088238
Angular difference between Flight and Ground position is 0.825008 arcmin
Partial Coding Fraction: 0.7421875 [ including projection effects ]
Duration
T90: 15.5479999184608 +/- 1.85303644427525
Measured from: -2.33999985456467
to: 13.2080000638962 [s; relative to TRIGTIME]
T50: 9.25599998235703 +/- 0.525889714464287
Measured from: 1.14800012111664
to: 10.4040001034737 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 10.2240000367165
to: 11.2240000367165 [s; relative to TRIGTIME]
Total Fluence
Measured from: -3.93999999761581
to: 15.772000014782 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.396867 0.613221 0.568350 0.141053
0.026858 0.028334 0.024944 0.020044 [error]
Peak 0.041663 0.081829 0.067235 0.020177
0.006412 0.007192 0.006437 0.004814 [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 1.24e-07 2.58e-07 4.21e-07 1.55e-06 1.16e-06 2.35e-06 erg/cm2
Error 1.14e-08 1.42e-08 2.42e-08 1.98e-07 6.09e-08 2.13e-07 erg/cm2
Peak flux Power-law 4.51e-01 5.28e-01 4.45e-01 6.35e-01 1.65e+00 2.06e+00 ph/cm2/s
Error 7.98e-02 5.85e-02 5.12e-02 1.50e-01 1.65e-01 2.13e-01 ph/cm2/s
Fluence Cutoff-PL 1.13e-07 2.68e-07 4.38e-07 8.52e-07 1.13e-06 1.67e-06 erg/cm2
Error 1.38e-08 1.63e-08 2.77e-08 3.73e-07 6.61e-08 3.72e-07 erg/cm2
Peak flux Cutoff-PL 4.07e-01 5.54e-01 4.71e-01 3.65e-01 1.62e+00 1.80e+00 ph/cm2/s
Error 9.32e-02 6.86e-02 6.04e-02 2.52e-01 1.68e-01 2.99e-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 3.68e-01 6.04e-01 4.40e-01 1.94e+00 0.00e+00 0.00e+00 ph/cm2/s
Error 1.02e-01 5.37e-02 2.27e-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 1.295 0.084 - - 5.97e-03 2.86e-04 54.700 57
CPL 0.848 0.346 138.6 129.8 9.72e-03 3.68e-03 49.260 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.246 0.162 - - 1.40e-02 1.37e-03 48.500 57
CPL 0.717 0.647 127.1 -40.3 2.54e-02 2.08e-02 46.300 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: 15.616000 sec.
T50 in the 50-300 keV band: 9.920000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 19.712 -3.940 15.772
T90 15.548 -2.340 13.208
T50 9.256 1.148 10.404
Peak 1.000 10.224 11.224
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
30.6533 +33.4798 0.0062 25.2 152.4 1.7258 30.9 TRIG_00590206
------------------------------------------
Foreground time interval of the image:
-3.940 13.785 (delta_t = 17.725 [sec])
Background time interval of the image:
-60.816 -56.343 (delta_t = 4.473 [sec])
-54.816 -3.940 (delta_t = 50.876 [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 -3.940 sec. to 15.772 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.29489 ( -0.0842279 0.083746 )
Norm@50keV : 5.97256E-03 ( -0.000286115 0.000286115 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.70 using 59 PHA bins.
# Reduced chi-squared = 0.9596 for 57 degrees of freedom
# Null hypothesis probability = 5.619480e-01
Photon flux (15-150 keV) in 19.71 sec: 0.711873 ( -0.0357091 0.035773 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.16474e-06 ( -6.07563e-08 6.09494e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -3.940 sec. to 15.772 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.847836 ( -0.359804 0.332031 )
Epeak [keV] : 138.622 ( -39.2744 220.36 )
Norm@50keV : 9.71774E-03 ( -0.00288163 0.00448361 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.26 using 59 PHA bins.
# Reduced chi-squared = 0.8797 for 56 degrees of freedom
# Null hypothesis probability = 7.258065e-01
Photon flux (15-150 keV) in 19.71 sec: 0.696474 ( -0.037431 0.037447 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.1328e-06 ( -6.62591e-08 6.59043e-08 ) ergs/cm2
Band function
Time interval is from -3.940 sec. to 15.772 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.17102 ( -1.43973 -0.407522 )
beta : -1.40961 ( 1.42086 0.133597 )
Epeak [keV] : 39.5247 ( -19.311 202.358 )
Norm@50keV : 0.255904 ( -0.255371 87.6799 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.83 using 59 PHA bins.
# Reduced chi-squared = 0.8879 for 55 degrees of freedom
# Null hypothesis probability = 7.078674e-01
Photon flux (15-150 keV) in 19.71 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] : 17.9113 ( )
R^2/D10^2 : 4.58962E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 119.83 using 59 PHA bins.
# Reduced chi-squared = 2.1023 for 57 degrees of freedom
# Null hypothesis probability = 2.286391e-06
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.820e-08 5.745e-09
25- 50 2.682e-07 1.685e-08
50-150 6.237e-07 5.272e-08
15-150 9.500e-07 5.745e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 2.97944 (-0.144165 0.144135)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 77.20 using 59 PHA bins.
# Reduced chi-squared = 1.354 for 57 degrees of freedom
# Null hypothesis probability = 3.865630e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.463e-07 8.613e-09
25- 50 2.814e-07 1.665e-08
50-150 6.171e-07 3.508e-08
15-150 1.045e-06 5.450e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.11915 (-1.5042 1.73115)
R1^2/D10^2 : 0.373170 (-0.160756 0.337761)
kT2 [keV] : 29.2505 (-4.56536 7.96521)
R2^2/D10^2 : 7.12348E-03 (-0.004007 0.00605186)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.17 using 59 PHA bins.
# Reduced chi-squared = 0.8758 for 55 degrees of freedom
# Null hypothesis probability = 7.310122e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.077e-07 2.211e-08
25- 50 2.756e-07 4.287e-08
50-150 7.546e-07 1.817e-07
15-150 1.138e-06 2.464e-07
Peak spectrum fit
Power-law model
Time interval is from 10.224 sec. to 11.224 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.24557 ( -0.162551 0.16125 )
Norm@50keV : 1.39679E-02 ( -0.00137326 0.00137234 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.50 using 59 PHA bins.
# Reduced chi-squared = 0.8508 for 57 degrees of freedom
# Null hypothesis probability = 7.813356e-01
Photon flux (15-150 keV) in 1 sec: 1.65083 ( -0.165204 0.165377 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.39955e-07 ( -1.5258e-08 1.53599e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 10.224 sec. to 11.224 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.716988 ( -0.70702 0.587553 )
Epeak [keV] : 127.122 ( -46.5539 -127.123 )
Norm@50keV : 2.53959E-02 ( -0.0119636 0.0296758 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.30 using 59 PHA bins.
# Reduced chi-squared = 0.8268 for 56 degrees of freedom
# Null hypothesis probability = 8.189858e-01
Photon flux (15-150 keV) in 1 sec: 1.62433 ( -0.16832 0.16828 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.3573e-07 ( -1.6454e-08 1.633e-08 ) ergs/cm2
Band function
Time interval is from 10.224 sec. to 11.224 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.69944 ( -2.84476 -4.69944 )
beta : -1.45701 ( -0.228802 0.212467 )
Epeak [keV] : 31.9561 ( -5.6498 5.22472 )
Norm@50keV : 186.703 ( -18.1522 1255.34 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.43 using 59 PHA bins.
# Reduced chi-squared = 0.7896 for 55 degrees of freedom
# Null hypothesis probability = 8.701349e-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] : 17.5382 (-2.19313 2.5867)
R^2/D10^2 : 0.117901 (-0.0435448 0.0669745)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.55 using 59 PHA bins.
# Reduced chi-squared = 1.133 for 57 degrees of freedom
# Null hypothesis probability = 2.295898e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.320e-09 1.387e-09
25- 50 3.319e-08 5.110e-09
50-150 7.358e-08 1.222e-08
15-150 1.141e-07 1.517e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 6.81570 (-0.678139 0.678109)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.24 using 59 PHA bins.
# Reduced chi-squared = 0.9866 for 57 degrees of freedom
# Null hypothesis probability = 5.036486e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.697e-08 7.573e-09
25- 50 3.264e-08 1.404e-08
50-150 7.159e-08 3.761e-08
15-150 1.212e-07 6.027e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.35959 (-2.25073 2.93904)
R1^2/D10^2 : 0.823534 (-0.47552 0.859929)
kT2 [keV] : 30.9301 (-7.98228 22.4933)
R2^2/D10^2 : 1.40595E-02 (-0.0114303 0.0261821)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 43.89 using 59 PHA bins.
# Reduced chi-squared = 0.7980 for 55 degrees of freedom
# Null hypothesis probability = 8.589361e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.280e-08 6.136e-09
25- 50 3.314e-08 1.524e-08
50-150 9.218e-08 4.973e-08
15-150 1.381e-07 6.135e-08
Plot creation:
Wed Mar 5 02:46:52 EST 2014