batgrbproduct Analysis for Trigger=701288
Analysis Summary
Notes:
- 1) No attempt has been made to eliminate the non-significant decimal places.
- 2) This batgrbproduct analysis is done using the HEASARC data.
- 3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time (local time): Fri Jul 15 14:21:18 EDT 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger701288
======================================================================
Trigger: 00701288 Segment: 000
BAT Trigger Time: 488460437.76 [s; MET]
Trigger Stop: 488460438.016 [s; MET]
UTC: 2016-06-24T11:27:01.297540 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 330.202984900918 Dec: 29.6339595166124 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.25
Image Trigger?: NO
Rate S/N Ratio: 33.734255586866 [ if not an image trigger ]
Image S/N Ratio: 7.25
Flight Position: [ source = BAT ]
RA: 330.202984900918 Dec: 29.6339595166124 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 330.214472800476 Dec: 29.660699040235 [deg; J2000]
{ 22h 00m 51.5s , +29d 39' 38.5" }
+/- 2.54128132283097 [arcmin] (estimated 90% radius based on SNR)
+/- 1.33722199224074 [arcmin] (formal 1-sigma fit error)
SNR: 8.02549081344798
Angular difference between Flight and Ground position is 1.712558 arcmin
Partial Coding Fraction: 1 [ including projection effects ]
Duration
T90: 0.191999971866608 +/- 0.143108374017273
Measured from: 0.0480000376701355
to: 0.240000009536743 [s; relative to TRIGTIME]
T50: 0.12799996137619 +/- 0.0640000104904175
Measured from: 0.0480000376701355
to: 0.175999999046326 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: -0.291999995708466
to: 0.708000004291534 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0.0480000376701355
to: 0.304000020027161 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.011192 0.009114 0.018688 0.013426
0.002779 0.003323 0.003514 0.003091 [error]
Peak 0.014954 0.017261 0.027953 0.014006
0.005403 0.005862 0.005496 0.004869 [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 1.27e-09 4.81e-09 1.53e-08 1.58e-07 4.30e-08 1.79e-07 erg/cm2
Error 8.08e-10 1.79e-09 3.03e-09 9.56e-08 9.07e-09 9.49e-08 erg/cm2
Peak flux Power-law 7.04e-02 1.27e-01 1.77e-01 5.12e-01 5.08e-01 8.86e-01 ph/cm2/s
Error 5.16e-02 5.53e-02 4.16e-02 3.37e-01 1.31e-01 3.05e-01 ph/cm2/s
Fluence Cutoff-PL 1.27e-09 4.84e-09 1.46e-08 1.58e-07 4.20e-08 1.54e-07 erg/cm2
Error -------- 1.79e-09 -------- -------- -------- 1.72e-07 erg/cm2
Peak flux Cutoff-PL 7.04e-02 1.28e-01 1.77e-01 5.05e-01 5.08e-01 9.33e-01 ph/cm2/s
Error -------- 5.54e-02 -------- -------- 1.31e-01 5.20e-01 ph/cm2/s
Fluence Band 5.94e-12 1.16e-10 2.42e-09 1.36e-08 1.39e-08 1.35e-08 erg/cm2
Error 7.59e-12 1.28e-10 2.02e-09 2.97e-07 1.07e-08 2.96e-07 erg/cm2
Peak flux Band 7.04e-02 1.27e-01 1.77e-01 5.12e-01 5.08e-01 8.86e-01 ph/cm2/s
Error 5.16e-02 5.53e-02 4.16e-02 3.37e-01 1.31e-01 3.05e-01 ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 0.333 0.486 - - 1.14e-02 3.14e-03 60.870 57
CPL 0.324 0.539 10000.0 0.0 1.15e-02 -4.09e-03 60.910 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 0.526 0.574 - - 4.31e-03 1.34e-03 53.690 57
CPL 0.545 0.581 9999.4 0.0 4.38e-03 3.82e-03 53.720 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: 0.064000 sec.
T50 in the 50-300 keV band: 0.064000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 0.256 0.048 0.304
T90 0.192 0.048 0.240
T50 0.128 0.048 0.176
Peak 1.000 -0.292 0.708
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
330.2145 29.6607 0.0240 17.3372 6.3478 0.0507269 8.025 TRIG_00701288
Foreground time interval of the image:
0.048 0.304 (delta_t = 0.256 [sec])
Background time interval of the image:
-239.760 0.048 (delta_t = 239.808 [sec])
Lightcurves
Notes:
- 1) The mask-weighted light curves are using the flight position.
- 2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 3) 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.
- 4) 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.
- 5) 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)
Spectral Evolution
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using 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.
Time averaged spectrum fit using the average DRM
Power-law model
Time interval is from 0.048 sec. to 0.304 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.333016 ( -0.532842 0.438676 )
Norm@50keV : 1.14294E-02 ( -0.00334179 0.00294625 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.87 using 59 PHA bins.
# Reduced chi-squared = 1.068 for 57 degrees of freedom
# Null hypothesis probability = 3.383848e-01
Photon flux (15-150 keV) in 0.256 sec: 1.39897 ( -0.29658 0.29752 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.29427e-08 ( -9.07858e-09 9.06885e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.048 sec. to 0.304 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.323725 ( -0.669975 0.408896 )
Epeak [keV] : 1.00000E+04 ( -10000 -10000 )
Norm@50keV : 1.15467E-02 ( -0.00336372 -0.0115466 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.91 using 59 PHA bins.
# Reduced chi-squared = 1.088 for 56 degrees of freedom
# Null hypothesis probability = 3.037590e-01
Photon flux (15-150 keV) in 0.256 sec: 1.39878 ( -0.29686 0.29697 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.20311e-08 ( 0 0 ) ergs/cm2
Band function
Time interval is from 0.048 sec. to 0.304 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.04501 ( 1.04533 1.04533 )
beta : -0.332804 ( -0.438697 0.532911 )
Epeak [keV] : 10.5329 ( -10.5299 -10.5299 )
Norm@50keV : 1.78404E-02 ( -0.00940882 0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.87 using 59 PHA bins.
# Reduced chi-squared = 1.107 for 55 degrees of freedom
# Null hypothesis probability = 2.728681e-01
Photon flux (15-150 keV) in 0.256 sec: 1.40710 ( -0.31453 0.29793 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.39226e-08 ( -1.15996e-08 9.79387e-09 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 47.4241 (-17.2465 65.8838)
R^2/D10^2 : 7.18723E-03 (-0.00716723 0.0148074)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.36 using 59 PHA bins.
# Reduced chi-squared = 1.147 for 57 degrees of freedom
# Null hypothesis probability = 2.090277e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.705e-10 2.785e-10
25- 50 3.359e-09 1.932e-09
50-150 3.892e-08 2.154e-08
15-150 4.275e-08 2.427e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-51.6931 -200)
Norm : 5.00610 (-1.20139 1.20139)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 82.31 using 59 PHA bins.
# Reduced chi-squared = 1.444 for 57 degrees of freedom
# Null hypothesis probability = 1.578840e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.204e-09 1.966e-09
25- 50 6.163e-09 3.666e-09
50-150 1.352e-08 7.955e-09
15-150 2.288e-08 1.375e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.70911 (-3.06646 4.74501)
R1^2/D10^2 : 1.91078 (-1.87047 10.6374)
kT2 [keV] : 76.0281 (-36.9478 -76.0633)
R2^2/D10^2 : 2.56150E-03 (-0.00233173 0.00922217)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.16 using 59 PHA bins.
# Reduced chi-squared = 1.076 for 55 degrees of freedom
# Null hypothesis probability = 3.263579e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.259e-09 1.460e-09
25- 50 4.044e-09 2.237e-09
50-150 3.895e-08 2.390e-08
15-150 4.525e-08 2.481e-08
Peak spectrum fit
Power-law model
Time interval is from -0.292 sec. to 0.708 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.526356 ( -0.635841 0.512427 )
Norm@50keV : 4.30760E-03 ( -0.00142877 0.00124466 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.69 using 59 PHA bins.
# Reduced chi-squared = 0.9419 for 57 degrees of freedom
# Null hypothesis probability = 6.000976e-01
Photon flux (15-150 keV) in 1 sec: 0.508025 ( -0.130674 0.132038 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.71163e-08 ( -1.42269e-08 1.42445e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.292 sec. to 0.708 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.544691 ( -0.670245 0.490965 )
Epeak [keV] : 9999.36 ( -9999.36 -9999.36 )
Norm@50keV : 4.38497E-03 ( -0.00147133 0.00616527 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.72 using 59 PHA bins.
# Reduced chi-squared = 0.9592 for 56 degrees of freedom
# Null hypothesis probability = 5.617365e-01
Photon flux (15-150 keV) in 1 sec: 0.508194 ( -0.131029 0.131624 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.62108e-08 ( 0 0 ) ergs/cm2
Band function
Time interval is from -0.292 sec. to 0.708 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.743889 ( 0.745026 0.745026 )
beta : -0.526512 ( -0.512443 0.636446 )
Epeak [keV] : 16.2636 ( -16.265 -16.265 )
Norm@50keV : 6.29535E-03 ( -0.0032898 0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.69 using 59 PHA bins.
# Reduced chi-squared = 0.9761 for 55 degrees of freedom
# Null hypothesis probability = 5.248529e-01
Photon flux (15-150 keV) in 1 sec: 0.508024 ( -0.130677 0.13204 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.71163e-08 ( -1.42269e-08 1.42445e-08 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 40.0116 (-15.2096 61.0762)
R^2/D10^2 : 3.67455E-03 (-0.00365987 0.00962592)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.43 using 59 PHA bins.
# Reduced chi-squared = 1.008 for 57 degrees of freedom
# Null hypothesis probability = 4.591591e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.589e-10 4.601e-10
25- 50 5.177e-09 3.099e-09
50-150 4.950e-08 2.925e-08
15-150 5.544e-08 3.180e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-66.4854 -200)
Norm : 2.02234 (-0.545253 0.545253)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.28 using 59 PHA bins.
# Reduced chi-squared = 1.145 for 57 degrees of freedom
# Null hypothesis probability = 2.109817e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.035e-09 3.051e-09
25- 50 9.686e-09 5.840e-09
50-150 2.124e-08 1.312e-08
15-150 3.596e-08 2.168e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.04069 (-3.58222 5.95794)
R1^2/D10^2 : 0.673645 (-0.660563 41.7601)
kT2 [keV] : 65.0981 (-33.4059 -65.208)
R2^2/D10^2 : 1.14883E-03 (-0.00101753 0.00620421)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.47 using 59 PHA bins.
# Reduced chi-squared = 0.9541 for 55 degrees of freedom
# Null hypothesis probability = 5.717246e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.727e-09 2.622e-09
25- 50 6.608e-09 3.703e-09
50-150 5.032e-08 2.735e-08
15-150 6.065e-08 3.122e-08
Plot creation:
Fri Jul 15 14:49:25 EDT 2016