batgrbproduct Analysis for Trigger=591390
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 12 08:07:52 EDT 2014
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger591390/GCN5_download_cron
======================================================================
Trigger: 00591390 Segment: 000
BAT Trigger Time: 416264728 [s; MET]
Trigger Stop: 416264792 [s; MET]
UTC: 2014-03-11T21:05:16.252360 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 209.300638813478 Dec: 0.611516972213103 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.81
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 7.81
Flight Position: [ source = BAT ]
RA: 209.300638813478 Dec: 0.611516972213103 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 209.296124955611 Dec: 0.603107007081241 [deg; J2000]
{ 13h 57m 11.1s , +00d 36' 11.2" }
+/- 3.8541341579674 [arcmin] (estimated 90% radius based on SNR)
+/- 2.78693324735253 [arcmin] (formal 1-sigma fit error)
SNR: 4.42669963167322
Angular difference between Flight and Ground position is 0.572678 arcmin
Partial Coding Fraction: 0.1083984 [ including projection effects ]
Duration
T90: 71.9039999842644 +/- 9.02763400633196
Measured from: -2.10399985313416
to: 69.8000001311302 [s; relative to TRIGTIME]
T50: 40.7360000014305 +/- 16.1605544749966
Measured from: 16.6800001263618
to: 57.4160001277924 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -2.40399998426437
to: -1.40399998426437 [s; relative to TRIGTIME]
Total Fluence
Measured from: -4.4559999704361
to: 83.7360000014305 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.026110 1.309010 1.000684 0.283948
0.157153 0.152239 0.135321 0.125138 [error]
Peak 0.048614 0.047270 0.036057 0.013382
0.017540 0.017360 0.015418 0.013985 [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 3.79e-07 6.20e-07 7.67e-07 1.88e-06 2.30e-06 3.64e-06 erg/cm2
Error 7.85e-08 7.85e-08 1.37e-07 7.16e-07 3.22e-07 8.28e-07 erg/cm2
Peak flux Power-law 4.95e-01 4.37e-01 2.66e-01 2.44e-01 1.30e+00 1.44e+00 ph/cm2/s
Error 2.64e-01 1.51e-01 1.21e-01 2.28e-01 4.44e-01 4.82e-01 ph/cm2/s
Fluence Cutoff-PL 3.65e-07 6.24e-07 7.73e-07 1.51e-06 2.26e-06 3.27e-06 erg/cm2
Error 6.76e-08 9.26e-08 1.42e-07 1.33e-06 3.51e-07 1.20e-06 erg/cm2
Peak flux Cutoff-PL 4.35e-01 4.72e-01 2.79e-01 1.08e-01 1.26e+00 1.29e+00 ph/cm2/s
Error 2.42e-01 1.88e-01 1.40e-01 1.88e-01 4.63e-01 5.44e-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 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 1.693 0.229 - - 2.91e-03 3.86e-04 54.450 57
CPL 1.599 0.999 201.8 0.0 3.25e-03 0.00e+00 54.420 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.719 0.614 - - 9.74e-03 3.52e-03 48.040 57
CPL 0.928 2.615 65.0 0.0 2.52e-02 0.00e+00 47.770 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: 56.768000 sec.
T50 in the 50-300 keV band: 44.800000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 88.192 -4.456 83.736
T90 71.904 -2.104 69.800
T50 40.736 16.680 57.416
Peak 1.000 -2.404 -1.404
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
209.2961 +0.6031 0.0430 40.8 56.0 3.9450 4.4 TRIG_00591390
------------------------------------------
Foreground time interval of the image:
-4.456 41.500 (delta_t = 45.956 [sec])
43.000 59.540 (delta_t = 16.540 [sec])
61.000 83.736 (delta_t = 22.736 [sec])
Background time interval of the image:
-16.099 -4.456 (delta_t = 11.643 [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
-4.456000 41.500000
43.000000 59.540000
61.000000 83.736000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.69255 ( -0.226409 0.232586 )
Norm@50keV : 2.90722E-03 ( -0.000388587 0.000382497 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.45 using 59 PHA bins.
# Reduced chi-squared = 0.9553 for 57 degrees of freedom
# Null hypothesis probability = 5.713335e-01
Photon flux (15-150 keV) in 85.23 sec: 0.385111 ( -0.0489802 0.0491576 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.29555e-06 ( -3.19625e-07 3.23896e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-4.456000 41.500000
43.000000 59.540000
61.000000 83.736000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.59882 ( -0.986421 1.01128 )
Epeak [keV] : 201.844 ( )
Norm@50keV : 3.25134E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.42 using 59 PHA bins.
# Reduced chi-squared = 0.9718 for 56 degrees of freedom
# Null hypothesis probability = 5.349323e-01
Photon flux (15-150 keV) in 85.23 sec: 0.383339 ( -0.051734 0.050449 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.26276e-06 ( -3.58622e-07 3.44355e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-4.456000 41.500000
43.000000 59.540000
61.000000 83.736000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.51703 ( 1.51895 1.0947 )
beta : -1.84314 ( 1.84285 0.374545 )
Epeak [keV] : 132.692 ( -132.942 -132.942 )
Norm@50keV : 3.58293E-03 ( -0.000927225 0.396185 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.40 using 59 PHA bins.
# Reduced chi-squared = 0.9891 for 55 degrees of freedom
# Null hypothesis probability = 4.975223e-01
Photon flux (15-150 keV) in 85.23 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] : 13.5404 (-2.03315 2.42306)
R^2/D10^2 : 5.91267E-02 (-0.0265861 0.0478604)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.12 using 59 PHA bins.
# Reduced chi-squared = 1.248 for 57 degrees of freedom
# Null hypothesis probability = 9.887647e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.957e-07 5.191e-08
25- 50 7.035e-07 1.185e-07
50-150 8.345e-07 2.213e-07
15-150 1.734e-06 3.396e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 147.821 (-64.0412 -146.07)
Norm : 1.57062 (-0.219004 0.308255)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.80 using 59 PHA bins.
# Reduced chi-squared = 0.9614 for 57 degrees of freedom
# Null hypothesis probability = 5.580963e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.442e-07 1.698e-07
25- 50 6.367e-07 3.224e-07
50-150 1.249e-06 7.453e-07
15-150 2.230e-06 1.133e-06
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.03324 (-1.84939 3.06418)
R1^2/D10^2 : 1.43192 (-1.15672 10.1255)
kT2 [keV] : 20.1164 (-4.74047 12.8572)
R2^2/D10^2 : 1.18347E-02 (-0.00994171 0.0214264)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.17 using 59 PHA bins.
# Reduced chi-squared = 1.003 for 55 degrees of freedom
# Null hypothesis probability = 4.682932e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.833e-07 1.995e-07
25- 50 5.949e-07 2.646e-07
50-150 1.187e-06 6.797e-07
15-150 2.165e-06 8.663e-07
Peak spectrum fit
Power-law model
Time interval is from -2.404 sec. to -1.404 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.71908 ( -0.587334 0.640911 )
Norm@50keV : 9.73513E-03 ( -0.00360064 0.00344203 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.04 using 59 PHA bins.
# Reduced chi-squared = 0.8428 for 57 degrees of freedom
# Null hypothesis probability = 7.951602e-01
Photon flux (15-150 keV) in 1 sec: 1.30168 ( -0.442577 0.44501 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.00077e-08 ( -3.30418e-08 3.41625e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -2.404 sec. to -1.404 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.928144 ( -3.93756 1.29317 )
Epeak [keV] : 64.9798 ( )
Norm@50keV : 2.51894E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.77 using 59 PHA bins.
# Reduced chi-squared = 0.8530 for 56 degrees of freedom
# Null hypothesis probability = 7.751367e-01
Photon flux (15-150 keV) in 1 sec: 1.25954 ( -0.461224 0.4645 ) ph/cm2/s
Energy fluence (15-150 keV) : 8.52682e-08 ( -3.32773e-08 3.71758e-08 ) ergs/cm2
Band function
Time interval is from -2.404 sec. to -1.404 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.999560 ( 0.999546 5.99692 )
beta : -2.37896 ( 2.50182 11.9219 )
Epeak [keV] : 65.7333 ( -65.788 -65.788 )
Norm@50keV : 2.29372E-02 ( -0.0260195 2.16327e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.76 using 59 PHA bins.
# Reduced chi-squared = 0.8683 for 55 degrees of freedom
# Null hypothesis probability = 7.450487e-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] : 13.9612 (-4.33782 6.33791)
R^2/D10^2 : 0.187711 (-0.187659 0.529205)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 49.06 using 59 PHA bins.
# Reduced chi-squared = 0.8607 for 57 degrees of freedom
# Null hypothesis probability = 7.636487e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.731e-09 5.000e-09
25- 50 2.867e-08 1.725e-08
50-150 3.675e-08 2.489e-08
15-150 7.315e-08 4.554e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 132.439 (-87.5026 -128.882)
Norm : 5.39608 (-1.97105 3.44007)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.83 using 59 PHA bins.
# Reduced chi-squared = 0.8392 for 57 degrees of freedom
# Null hypothesis probability = 8.012443e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.399e-08 8.315e-09
25- 50 2.543e-08 1.522e-08
50-150 4.756e-08 3.271e-08
15-150 8.698e-08 5.415e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 4.29681 (-4.29689 -4.29689)
R1^2/D10^2 : 8.35735 (-8.355 34.8762)
kT2 [keV] : 17.3157 (-6.2028 -17.3157)
R2^2/D10^2 : 7.33627E-02 (-0.0733615 0.337541)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.13 using 59 PHA bins.
# Reduced chi-squared = 0.8569 for 55 degrees of freedom
# Null hypothesis probability = 7.657375e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.510e-08 1.007e-08
25- 50 2.470e-08 1.431e-08
50-150 4.316e-08 2.906e-08
15-150 8.296e-08 4.565e-08
Plot creation:
Wed Mar 12 08:25:53 EDT 2014