batgrbproduct Analysis for Trigger=601662
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): Sun Jun 15 03:47:25 EDT 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger601662/GCN5_download_cron
======================================================================
Trigger: 00601662 Segment: 000
BAT Trigger Time: 424420703.936 [s; MET]
Trigger Stop: 424420720.32 [s; MET]
UTC: 2014-06-14T06:38:11.799000 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 322.625366627712 Dec: 14.9204847784049 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.7
Image Trigger?: NO
Rate S/N Ratio: 13.2664991614216 [ if not an image trigger ]
Image S/N Ratio: 9.7
Flight Position: [ source = BAT ]
RA: 322.625366627712 Dec: 14.9204847784049 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 322.635729902523 Dec: 14.89487001566 [deg; J2000]
{ 21h 30m 32.6s , +14d 53' 41.5" }
+/- 2.07424306414273 [arcmin] (estimated 90% radius based on SNR)
+/- 0.892687106155344 [arcmin] (formal 1-sigma fit error)
SNR: 10.7265915072973
Angular difference between Flight and Ground position is 1.650170 arcmin
Partial Coding Fraction: 0.7109375 [ including projection effects ]
Duration
T90: 49.7679999470711 +/- 7.92365089384651
Measured from: -1.1839998960495
to: 48.5840000510216 [s; relative to TRIGTIME]
T50: 18.9399999976158 +/- 10.0072879423791
Measured from: 5.72800010442734
to: 24.6680001020432 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 6.92800003290176
to: 7.92800003290176 [s; relative to TRIGTIME]
Total Fluence
Measured from: -3.283999979496
to: 55.5920000076294 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.407914 0.448225 0.182066 0.050113
0.050476 0.052132 0.044639 0.038160 [error]
Peak 0.024472 0.019657 0.013323 0.007907
0.006802 0.007248 0.006171 0.005115 [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 1.28e-07 1.69e-07 1.64e-07 2.84e-07 5.54e-07 7.44e-07 erg/cm2
Error 2.34e-08 2.36e-08 4.12e-08 1.39e-07 9.48e-08 1.88e-07 erg/cm2
Peak flux Power-law 2.02e-01 1.70e-01 9.77e-02 8.35e-02 5.06e-01 5.53e-01 ph/cm2/s
Error 9.72e-02 5.44e-02 7.59e-02 1.07e-01 1.62e-01 1.86e-01 ph/cm2/s
Fluence Cutoff-PL 1.18e-07 1.91e-07 1.53e-07 5.83e-08 5.04e-07 5.20e-07 erg/cm2
Error 2.70e-08 2.62e-08 4.98e-08 9.94e-08 1.01e-07 2.02e-07 erg/cm2
Peak flux Cutoff-PL 2.04e-01 1.70e-01 9.65e-02 5.05e-01 5.50e-01 0.00e+00 ph/cm2/s
Error 9.18e-02 5.44e-02 1.62e-01 1.86e-01 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 2.042 0.263 - - 1.04e-03 1.91e-04 52.900 57
CPL 0.990 1.366 39.1 0.0 4.30e-03 0.00e+00 50.570 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.799 0.687 - - 3.67e-03 1.51e-03 54.200 57
CPL 2.745 0.000 235.7 0.0 1.21e-03 0.00e+00 53.640 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 58.876 -3.284 55.592
T90 49.768 -1.184 48.584
T50 18.940 5.728 24.668
Peak 1.000 6.928 7.928
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
322.6357 +14.8949 0.0180 20.1 111.8 1.0696 10.7 TRIG_00601662
------------------------------------------
Foreground time interval of the image:
-3.284 11.694 (delta_t = 14.978 [sec])
13.064 55.592 (delta_t = 42.528 [sec])
Background time interval of the image:
-239.936 -56.816 (delta_t = 183.120 [sec])
-55.936 -3.284 (delta_t = 52.652 [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
-3.284000 11.694000
13.064000 55.592000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.04243 ( -0.251614 0.274387 )
Norm@50keV : 1.04123E-03 ( -0.000193914 0.000188186 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.90 using 59 PHA bins.
# Reduced chi-squared = 0.9281 for 57 degrees of freedom
# Null hypothesis probability = 6.296156e-01
Photon flux (15-150 keV) in 57.51 sec: 0.159311 ( -0.0216412 0.0216412 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.53674e-07 ( -9.31714e-08 9.63919e-08 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-3.284000 11.694000
13.064000 55.592000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.990215 ( -1.56989 1.16166 )
Epeak [keV] : 39.0638 ( )
Norm@50keV : 4.30375E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.57 using 59 PHA bins.
# Reduced chi-squared = 0.9031 for 56 degrees of freedom
# Null hypothesis probability = 6.797148e-01
Photon flux (15-150 keV) in 57.51 sec: 0.153936 ( -0.022304 0.022374 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.03832e-07 ( -9.45298e-08 1.07942e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-3.284000 11.694000
13.064000 55.592000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.994943 ( -5.88462 1.08768 )
beta : -9.37162 ( 9.37166 19.3717 )
Epeak [keV] : 39.0595 ( -10.2287 23.2307 )
Norm@50keV : 4.27560E-03 ( -0.00427561 330212 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.57 using 59 PHA bins.
# Reduced chi-squared = 0.9195 for 55 degrees of freedom
# Null hypothesis probability = 6.443137e-01
Photon flux (15-150 keV) in 57.51 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] : 9.92520 (-1.37527 1.59133)
R^2/D10^2 : 7.80640E-02 (-0.0339764 0.0597916)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.41 using 59 PHA bins.
# Reduced chi-squared = 0.9896 for 57 degrees of freedom
# Null hypothesis probability = 4.973121e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.984e-08 2.183e-08
25- 50 2.210e-07 4.388e-08
50-150 1.129e-07 3.977e-08
15-150 4.237e-07 8.264e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 59.9833 (-19.5024 35.742)
Norm : 0.839813 (-0.17093 0.215763)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.78 using 59 PHA bins.
# Reduced chi-squared = 0.8909 for 57 degrees of freedom
# Null hypothesis probability = 7.061044e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.214e-07 2.033e-08
25- 50 1.847e-07 2.884e-08
50-150 2.101e-07 8.540e-08
15-150 5.162e-07 1.068e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.29937 (-1.20197 1.57119)
R1^2/D10^2 : 28.8159 (-28.2185 25496.8)
kT2 [keV] : 11.4924 (-1.91397 3.00316)
R2^2/D10^2 : 4.07697E-02 (-0.0258796 0.0271076)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.34 using 59 PHA bins.
# Reduced chi-squared = 0.8789 for 55 degrees of freedom
# Null hypothesis probability = 7.252462e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.136e-07 4.597e-08
25- 50 1.973e-07 7.381e-08
50-150 1.501e-07 7.282e-08
15-150 4.610e-07 1.418e-07
Peak spectrum fit
Power-law model
Time interval is from 6.928 sec. to 7.928 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.79882 ( -0.652772 0.721714 )
Norm@50keV : 3.67239E-03 ( -0.00158346 0.00143384 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.20 using 59 PHA bins.
# Reduced chi-squared = 0.9509 for 57 degrees of freedom
# Null hypothesis probability = 5.807934e-01
Photon flux (15-150 keV) in 1 sec: 0.505816 ( -0.161647 0.161647 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.38091e-08 ( -1.35788e-08 1.46895e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 6.928 sec. to 7.928 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.74549 ( )
Epeak [keV] : 235.721 ( )
Norm@50keV : 1.20591E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.64 using 59 PHA bins.
# Reduced chi-squared = 0.9579 for 56 degrees of freedom
# Null hypothesis probability = 5.646442e-01
Photon flux (15-150 keV) in 1 sec: 0.505488 ( -0.161576 0.161559 ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Band function
Time interval is from 6.928 sec. to 7.928 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.90847 ( -4.90847 -4.90847 )
beta : -2.15572 ( -3.59439 0.887114 )
Epeak [keV] : 24.5011 ( -24.5011 8.85179 )
Norm@50keV : 547.569 ( -173.35 6.23853e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.70 using 59 PHA bins.
# Reduced chi-squared = 0.9764 for 55 degrees of freedom
# Null hypothesis probability = 5.243971e-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] : 7.16326 (-2.06189 3.50603)
R^2/D10^2 : 0.837104 (-0.837069 2.43318)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.10 using 59 PHA bins.
# Reduced chi-squared = 1.002 for 57 degrees of freedom
# Null hypothesis probability = 4.714528e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.063e-09 4.273e-09
25- 50 1.011e-08 6.555e-09
50-150 1.820e-09 1.593e-09
15-150 1.899e-08 1.198e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 99.3991 (-99.5748 -99.5748)
Norm : 2.21155 (-0.835164 2.19153)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.13 using 59 PHA bins.
# Reduced chi-squared = 0.9672 for 57 degrees of freedom
# Null hypothesis probability = 5.456419e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.780e-09 3.709e-09
25- 50 9.983e-09 6.325e-09
50-150 1.612e-08 1.320e-08
15-150 3.188e-08 2.204e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.35963 (-2.18458 2.2057)
R1^2/D10^2 : 1.22968 ( )
kT2 [keV] : 198.174 (-198.043 -198.043)
R2^2/D10^2 : 9.49014E-05 (-5.79612e-05 0.00419134)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.04 using 59 PHA bins.
#Fit statistic : Chi-Squared = 49.96 using 59 PHA bins.
# Reduced chi-squared = 0.9098 for 55 degrees of freedom
# Reduced chi-squared = 0.9084 for 55 degrees of freedom
# Null hypothesis probability = 6.642227e-01
# Null hypothesis probability = 6.670429e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.064e-09 4.112e-09
25- 50 9.453e-09 5.690e-09
50-150 2.575e-08 1.639e-08
15-150 4.227e-08 2.553e-08
Plot creation:
Sun Jun 15 03:50:50 EDT 2014