batgrbproduct Analysis for Trigger=586569
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): Fri Feb 14 10:00:54 EST 2014
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger586569/GCN5_download_cron
======================================================================
Trigger: 00586569 Segment: 000
BAT Trigger Time: 414012109.376 [s; MET]
Trigger Stop: 414012110.4 [s; MET]
UTC: 2014-02-13T19:21:37.734900 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 105.21786344568 Dec: -73.1363397970065 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 23.55
Image Trigger?: NO
Rate S/N Ratio: 170.381923923872 [ if not an image trigger ]
Image S/N Ratio: 23.55
Flight Position: [ source = BAT ]
RA: 105.21786344568 Dec: -73.1363397970065 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 105.16602664644 Dec: -73.1363242143856 [deg; J2000]
{ 07h 00m 39.8s , -73d 08' 10.8" }
+/- 0.655763656757496 [arcmin] (estimated 90% radius based on SNR)
+/- 0.160410366959007 [arcmin] (formal 1-sigma fit error)
SNR: 55.5786365836798
Angular difference between Flight and Ground position is 0.902257 arcmin
Partial Coding Fraction: 0.5 [ including projection effects ]
Duration
T90: 60.0199999213219 +/- 2.62312485984891
Measured from: -4.47999984025955
to: 55.5400000810623 [s; relative to TRIGTIME]
T50: 6.50799995660782 +/- 0.264967926877122
Measured from: -1.93599987030029
to: 4.57200008630753 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.555999994277954
to: 1.55599999427795 [s; relative to TRIGTIME]
Total Fluence
Measured from: -5.69999998807907
to: 82.0720000267029 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 6.594756 8.093415 4.922638 1.070367
0.096444 0.101677 0.086879 0.067277 [error]
Peak 0.818523 1.104768 0.690115 0.150322
0.021367 0.024509 0.020725 0.011215 [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 2.19e-06 3.37e-06 3.88e-06 8.56e-06 1.20e-05 1.80e-05 erg/cm2
Error 8.92e-08 7.73e-08 9.75e-08 4.97e-07 2.39e-07 5.43e-07 erg/cm2
Peak flux Power-law 8.91e+00 7.90e+00 4.81e+00 4.44e+00 2.35e+01 2.61e+01 ph/cm2/s
Error 4.81e-01 2.56e-01 1.75e-01 3.36e-01 7.51e-01 7.62e-01 ph/cm2/s
Fluence Cutoff-PL 2.10e-06 3.40e-06 3.92e-06 6.81e-06 1.18e-05 1.62e-05 erg/cm2
Error 1.18e-07 8.24e-08 1.06e-07 1.29e-06 2.79e-07 1.35e-06 erg/cm2
Peak flux Cutoff-PL 8.42e+00 8.04e+00 4.93e+00 3.39e+00 2.31e+01 2.48e+01 ph/cm2/s
Error 6.01e-01 2.83e-01 2.00e-01 7.26e-01 8.04e-01 1.14e+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 1.796 0.039 - - 1.50e-02 2.97e-04 59.240 57
CPL 1.622 0.160 116.6 232.2 1.80e-02 3.01e-03 55.650 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.715 0.053 - - 1.76e-01 5.19e-03 66.520 57
CPL 1.453 0.210 109.2 104.5 2.36e-01 5.47e-02 61.720 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: 56.000000 sec.
T50 in the 50-300 keV band: 5.632000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 87.772 -5.700 82.072
T90 60.020 -4.480 55.540
T50 6.508 -1.936 4.572
Peak 1.000 0.556 1.556
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
105.1660 -73.1363 0.0035 24.4 104.9 21.0201 55.6 TRIG_00586569
------------------------------------------
Foreground time interval of the image:
-5.700 46.674 (delta_t = 52.374 [sec])
47.624 82.072 (delta_t = 34.448 [sec])
Background time interval of the image:
-67.275 -56.926 (delta_t = 10.350 [sec])
-55.376 -5.700 (delta_t = 49.676 [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
-5.700000 46.674000
47.624000 82.072000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.79617 ( -0.0393251 0.0393894 )
Norm@50keV : 1.49817E-02 ( -0.000296837 0.000296795 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.24 using 59 PHA bins.
# Reduced chi-squared = 1.039 for 57 degrees of freedom
# Null hypothesis probability = 3.939741e-01
Photon flux (15-150 keV) in 86.82 sec: 2.06139 ( -0.0492834 0.0495337 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.19761e-05 ( -2.39281e-07 2.39349e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-5.700000 46.674000
47.624000 82.072000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.62220 ( -0.162475 0.156724 )
Epeak [keV] : 116.605 ( -31.8337 432.598 )
Norm@50keV : 1.80324E-02 ( -0.00270621 0.00331675 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.65 using 59 PHA bins.
# Reduced chi-squared = 0.9938 for 56 degrees of freedom
# Null hypothesis probability = 4.879137e-01
Photon flux (15-150 keV) in 86.82 sec: 2.02686 ( -0.05721 0.05762 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.18195e-05 ( -2.79821e-07 2.78432e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-5.700000 46.674000
47.624000 82.072000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.750877 ( -0.617886 4.20582 )
beta : -1.87167 ( -0.0804083 0.0663278 )
Epeak [keV] : 42.7377 ( -18.3227 31.1658 )
Norm@50keV : 6.32569E-02 ( -0.0412437 20.8259 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.24 using 59 PHA bins.
# Reduced chi-squared = 0.8952 for 55 degrees of freedom
# Null hypothesis probability = 6.934770e-01
Photon flux (15-150 keV) in 86.82 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] : 14.4940 ( )
R^2/D10^2 : 0.228899 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 599.87 using 59 PHA bins.
# Reduced chi-squared = 10.524 for 57 degrees of freedom
# Null hypothesis probability = 1.381411e-91
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.784e-07 3.790e-08
25- 50 3.380e-06 9.507e-08
50-150 4.756e-06 1.784e-07
15-150 9.015e-06 1.953e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 119.290 ( )
Norm : 8.55461 (-0.356847 0.229203)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.45 using 59 PHA bins.
# Reduced chi-squared = 1.166 for 57 degrees of freedom
# Null hypothesis probability = 1.835322e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.865e-06 9.463e-08
25- 50 3.375e-06 1.272e-07
50-150 6.224e-06 1.279e-06
15-150 1.146e-05 1.333e-06
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.80173 (-0.539799 0.560073)
R1^2/D10^2 : 1.63444 (-0.343808 0.468706)
kT2 [keV] : 28.1550 (-2.51178 3.21508)
R2^2/D10^2 : 1.47732E-02 (-0.00479137 0.00625042)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.59 using 59 PHA bins.
# Reduced chi-squared = 1.229 for 55 degrees of freedom
# Null hypothesis probability = 1.186585e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.697e-06 1.068e-07
25- 50 3.558e-06 1.142e-07
50-150 6.299e-06 3.976e-07
15-150 1.155e-05 5.296e-07
Peak spectrum fit
Power-law model
Time interval is from 0.556 sec. to 1.556 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.71481 ( -0.0525812 0.0528002 )
Norm@50keV : 0.176152 ( -0.00518908 0.00518482 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.52 using 59 PHA bins.
# Reduced chi-squared = 1.167 for 57 degrees of freedom
# Null hypothesis probability = 1.820492e-01
Photon flux (15-150 keV) in 1 sec: 23.5172 ( -0.750226 0.752209 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.62914e-06 ( -4.94288e-08 4.94844e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.556 sec. to 1.556 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.45316 ( -0.215281 0.205237 )
Epeak [keV] : 109.239 ( -27.512 181.587 )
Norm@50keV : 0.235792 ( -0.0470673 0.0623562 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.72 using 59 PHA bins.
# Reduced chi-squared = 1.102 for 56 degrees of freedom
# Null hypothesis probability = 2.790476e-01
Photon flux (15-150 keV) in 1 sec: 23.1247 ( -0.8029 0.8057 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.60378e-06 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.556 sec. to 1.556 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.329741 ( -1.03677 3.01999 )
beta : -1.83728 ( -0.0995839 0.0860115 )
Epeak [keV] : 42.1118 ( -10.7057 19.5958 )
Norm@50keV : 1.24016 ( -2.02969 217.325 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.10 using 59 PHA bins.
# Reduced chi-squared = 0.9654 for 55 degrees of freedom
# Null hypothesis probability = 5.476008e-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] : 14.0100 ( )
R^2/D10^2 : 3.15618 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 337.45 using 59 PHA bins.
# Reduced chi-squared = 5.9202 for 57 degrees of freedom
# Null hypothesis probability = 1.946777e-41
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.309e-07 7.300e-09
25- 50 4.870e-07 1.795e-08
50-150 6.296e-07 3.590e-08
15-150 1.247e-06 4.050e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 142.694 ( )
Norm : 96.1597 (-3.47552 4.35657)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 63.02 using 59 PHA bins.
# Reduced chi-squared = 1.106 for 57 degrees of freedom
# Null hypothesis probability = 2.718878e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.457e-07 1.440e-08
25- 50 4.533e-07 2.305e-08
50-150 8.827e-07 2.018e-07
15-150 1.582e-06 2.225e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.15776 (-0.699634 0.720015)
R1^2/D10^2 : 16.5307 (-3.9725 5.7268)
kT2 [keV] : 30.7018 (-3.88222 5.53659)
R2^2/D10^2 : 0.131496 (-0.0573622 0.0851029)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.70 using 59 PHA bins.
# Reduced chi-squared = 1.049 for 55 degrees of freedom
# Null hypothesis probability = 3.756293e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.209e-07 1.760e-08
25- 50 4.842e-07 2.685e-08
50-150 8.873e-07 9.395e-08
15-150 1.592e-06 1.270e-07
Plot creation:
Fri Feb 14 10:37:00 EST 2014