batgrbproduct Analysis for Trigger=601259
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 Jun 11 16:34:24 EDT 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger601259/GCN5_download_cron
======================================================================
Trigger: 00601259 Segment: 000
BAT Trigger Time: 424110701.568 [s; MET]
Trigger Stop: 424110705.664 [s; MET]
UTC: 2014-06-10T16:31:29.445940 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 286.259880826746 Dec: 3.90684619347918 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 14.55
Image Trigger?: NO
Rate S/N Ratio: 14.9666295470958 [ if not an image trigger ]
Image S/N Ratio: 14.55
Flight Position: [ source = BAT ]
RA: 286.259880826746 Dec: 3.90684619347918 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 286.261317593605 Dec: 3.89901656729349 [deg; J2000]
{ 19h 05m 02.7s , +03d 53' 56.5" }
+/- 0.734859485114048 [arcmin] (estimated 90% radius based on SNR)
+/- 0.21113598560381 [arcmin] (formal 1-sigma fit error)
SNR: 47.2340394886483
Angular difference between Flight and Ground position is 0.477586 arcmin
Partial Coding Fraction: 0.6796875 [ including projection effects ]
Duration
T90: 96.067999958992 +/- 3.33193336501816
Measured from: -1.68799990415573
to: 94.3800000548363 [s; relative to TRIGTIME]
T50: 53.8359999060631 +/- 2.04920474124589
Measured from: 14.6200001239777
to: 68.4560000300407 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.479999959468842
to: 1.47999995946884 [s; relative to TRIGTIME]
Total Fluence
Measured from: -6.66800004243851
to: 105.708000004292 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.700550 3.716523 2.568338 0.602896
0.086323 0.086409 0.072354 0.058911 [error]
Peak 0.039753 0.060933 0.052308 0.020346
0.008334 0.008433 0.007147 0.005475 [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 8.55e-07 1.50e-06 2.01e-06 5.55e-06 5.85e-06 9.92e-06 erg/cm2
Error 4.90e-08 4.96e-08 7.49e-08 4.69e-07 1.81e-07 5.11e-07 erg/cm2
Peak flux Power-law 3.97e-01 4.42e-01 3.53e-01 4.66e-01 1.36e+00 1.66e+00 ph/cm2/s
Error 1.01e-01 6.92e-02 5.75e-02 1.60e-01 1.93e-01 2.34e-01 ph/cm2/s
Fluence Cutoff-PL 8.16e-07 1.52e-06 2.04e-06 4.12e-06 5.76e-06 8.51e-06 erg/cm2
Error 6.17e-08 5.48e-08 8.13e-08 1.23e-06 2.05e-07 1.15e-06 erg/cm2
Peak flux Cutoff-PL 3.87e-01 4.48e-01 3.57e-01 3.99e-01 1.36e+00 1.59e+00 ph/cm2/s
Error 1.16e-01 7.81e-02 6.49e-02 1.49e-01 2.86e-01 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 1.575 0.056 - - 5.60e-03 1.64e-04 50.590 57
CPL 1.364 0.220 159.3 3686.4 7.04e-03 1.61e-03 47.790 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.327 0.240 - - 1.14e-02 1.56e-03 48.060 57
CPL 1.199 1.063 324.8 0.0 1.32e-02 0.00e+00 48.000 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: 87.424000 sec.
T50 in the 50-300 keV band: 55.168000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 112.376 -6.668 105.708
T90 96.068 -1.688 94.380
T50 53.836 14.620 68.456
Peak 1.000 0.480 1.480
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
286.2613 +3.8990 0.0040 19.6 98.9 8.2369 47.2 TRIG_00601259
------------------------------------------
Foreground time interval of the image:
-6.668 37.512 (delta_t = 44.180 [sec])
38.432 78.833 (delta_t = 40.401 [sec])
Background time interval of the image:
-239.568 -57.431 (delta_t = 182.137 [sec])
-56.568 -6.668 (delta_t = 49.900 [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
-6.668000 37.512000
38.432000 105.708000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.57476 ( -0.0556506 0.0556762 )
Norm@50keV : 5.59621E-03 ( -0.000164075 0.000164029 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.59 using 59 PHA bins.
# Reduced chi-squared = 0.8875 for 57 degrees of freedom
# Null hypothesis probability = 7.128557e-01
Photon flux (15-150 keV) in 111.5 sec: 0.713628 ( -0.022996 0.0230715 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.85424e-06 ( -1.80796e-07 1.81122e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-6.668000 37.512000
38.432000 105.708000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.36432 ( -0.225927 0.213203 )
Epeak [keV] : 159.309 ( -56.1579 7316.6 )
Norm@50keV : 7.04422E-03 ( -0.00131106 0.00191697 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.79 using 59 PHA bins.
# Reduced chi-squared = 0.8534 for 56 degrees of freedom
# Null hypothesis probability = 7.743457e-01
Photon flux (15-150 keV) in 111.5 sec: 0.702593 ( -0.025351 0.025443 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.76195e-06 ( -2.05662e-07 2.04736e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-6.668000 37.512000
38.432000 105.708000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.490702 ( -0.748095 2.24482 )
beta : -1.67196 ( -0.108212 0.0913558 )
Epeak [keV] : 49.7885 ( -20.3682 74.8952 )
Norm@50keV : 2.52030E-02 ( -0.024422 1.23672 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 44.10 using 59 PHA bins.
# Reduced chi-squared = 0.8019 for 55 degrees of freedom
# Null hypothesis probability = 8.536168e-01
Photon flux (15-150 keV) in 111.5 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] : 15.4016 ( )
R^2/D10^2 : 6.94152E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 291.43 using 59 PHA bins.
# Reduced chi-squared = 5.1128 for 57 degrees of freedom
# Null hypothesis probability = 3.504196e-33
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.826e-07 2.252e-08
25- 50 1.557e-06 6.578e-08
50-150 2.543e-06 1.422e-07
15-150 4.482e-06 1.533e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 2.87385 (-0.0838604 0.0838604)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.21 using 59 PHA bins.
# Reduced chi-squared = 0.8458 for 57 degrees of freedom
# Null hypothesis probability = 7.900082e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.985e-07 2.782e-08
25- 50 1.536e-06 5.185e-08
50-150 3.368e-06 1.082e-07
15-150 5.703e-06 1.907e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.00316 (-0.766984 0.802774)
R1^2/D10^2 : 0.486871 (-0.129695 0.194564)
kT2 [keV] : 30.0228 (-3.58626 5.04503)
R2^2/D10^2 : 5.10088E-03 (-0.00209595 0.00296908)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 46.69 using 59 PHA bins.
# Reduced chi-squared = 0.8490 for 55 degrees of freedom
# Null hypothesis probability = 7.797632e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.091e-07 6.551e-08
25- 50 1.596e-06 1.087e-07
50-150 3.438e-06 3.601e-07
15-150 5.744e-06 4.577e-07
Peak spectrum fit
Power-law model
Time interval is from 0.480 sec. to 1.480 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.32732 ( -0.241031 0.238132 )
Norm@50keV : 1.13701E-02 ( -0.00156141 0.00155849 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.06 using 59 PHA bins.
# Reduced chi-squared = 0.8431 for 57 degrees of freedom
# Null hypothesis probability = 7.946057e-01
Photon flux (15-150 keV) in 1 sec: 1.36355 ( -0.192833 0.193497 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.11627e-07 ( -1.68232e-08 1.69783e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.480 sec. to 1.480 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.19933 ( -1.10715 1.01915 )
Epeak [keV] : 324.789 ( -326.268 -326.268 )
Norm@50keV : 1.31558E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.00 using 59 PHA bins.
# Reduced chi-squared = 0.8572 for 56 degrees of freedom
# Null hypothesis probability = 7.675932e-01
Photon flux (15-150 keV) in 1 sec: 1.35678 ( -0.19961 0.09928 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.11277e-07 ( -1.8634e-08 1.7809e-08 ) ergs/cm2
Band function
Time interval is from 0.480 sec. to 1.480 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.925040 ( 0.92442 0.92442 )
beta : -1.51121 ( 1.51588 0.415677 )
Epeak [keV] : 126.003 ( -126.227 -126.227 )
Norm@50keV : 1.84279E-02 ( -0.0084873 0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 47.76 using 59 PHA bins.
# Reduced chi-squared = 0.8684 for 55 degrees of freedom
# Null hypothesis probability = 7.449466e-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] : 16.6038 (-2.68521 3.47123)
R^2/D10^2 : 0.112780 (-0.0540083 0.0951194)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.60 using 59 PHA bins.
# Reduced chi-squared = 1.028 for 57 degrees of freedom
# Null hypothesis probability = 4.163820e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.372e-09 1.736e-09
25- 50 2.766e-08 6.395e-09
50-150 5.402e-08 1.543e-08
15-150 8.805e-08 1.943e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 ( )
Norm : 5.66660 (-0.781931 0.781851)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.51 using 59 PHA bins.
# Reduced chi-squared = 0.8861 for 57 degrees of freedom
# Null hypothesis probability = 7.155496e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.412e-08 7.980e-09
25- 50 2.715e-08 1.506e-08
50-150 5.955e-08 3.280e-08
15-150 1.008e-07 5.610e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 12.1037 (-7.51292 1.8182)
R1^2/D10^2 : 0.278021 (-0.171077 7.74591)
kT2 [keV] : 200.000 ( )
R2^2/D10^2 : 1.72791E-04 (-8.25185e-05 6.51039e-05)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.50 using 59 PHA bins.
#Fit statistic : Chi-Squared = 48.39 using 59 PHA bins.
# Reduced chi-squared = 0.8817 for 55 degrees of freedom
# Reduced chi-squared = 0.8798 for 55 degrees of freedom
# Null hypothesis probability = 7.197885e-01
# Null hypothesis probability = 7.234539e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 9.091e-09 4.457e-09
25- 50 2.918e-08 1.338e-08
50-150 7.136e-08 4.288e-08
15-150 1.096e-07 6.043e-08
Plot creation:
Wed Jun 11 16:42:15 EDT 2014