batgrbproduct Analysis for Trigger=609694
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 Aug 17 06:46:06 EDT 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger609694/GCN5_download_cron
======================================================================
Trigger: 00609694 Segment: 000
BAT Trigger Time: 429906864 [s; MET]
Trigger Stop: 429906928 [s; MET]
UTC: 2014-08-16T18:34:11.596080 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 244.997959508782 Dec: -59.3895563984315 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 5.84
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 5.84
Flight Position: [ source = BAT ]
RA: 244.997959508782 Dec: -59.3895563984315 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 245.004042842477 Dec: -59.2676896558487 [deg; J2000]
{ 16h 20m 01.0s , -59d 16' 03.7" }
+/- 5.50424143665894 [arcmin] (estimated 90% radius based on SNR)
+/- 4.37113898324925 [arcmin] (formal 1-sigma fit error)
SNR: 2.66059719802306
Angular difference between Flight and Ground position is 7.314375 arcmin
Partial Coding Fraction: 0.6796875 [ including projection effects ]
Duration
T90: 64 +/-
Measured from: 0
to: 64 [s; relative to TRIGTIME]
T50: 64 +/-
Measured from: 0
to: 64 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 64 second)
Measured from: 0
to: 64 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 64 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.229605 0.075737 0.035777 0.006782
0.056640 0.049961 0.041416 0.035503 [error]
Peak 0.229605 0.075737 0.035777 0.006782
0.056640 0.049961 0.041416 0.035503 [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 7.14e-08 4.14e-08 1.52e-08 7.41e-09 1.32e-07 1.35e-07 erg/cm2
Error 2.90e-08 2.90e-08 2.54e-08 3.31e-08 7.18e-08 8.77e-08 erg/cm2
Peak flux Power-law 3.75e-02 1.23e-02 2.27e-03 4.87e-04 5.24e-02 5.25e-02 ph/cm2/s
Error 1.55e-02 8.23e-03 3.63e-03 1.92e-03 2.08e-02 2.10e-02 ph/cm2/s
Fluence Cutoff-PL 7.13e-08 4.16e-08 1.54e-08 7.53e-09 1.32e-07 1.36e-07 erg/cm2
Error 2.88e-08 2.95e-08 1.70e-08 3.29e-08 7.39e-08 7.94e-08 erg/cm2
Peak flux Cutoff-PL 3.78e-02 1.19e-02 2.05e-03 4.21e-04 5.21e-02 5.22e-02 ph/cm2/s
Error 1.55e-02 1.03e-02 3.64e-03 1.91e-03 2.07e-02 2.10e-02 ph/cm2/s
Fluence Band -------- -------- -------- -------- -------- -------- erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Band -------- -------- -------- -------- -------- -------- ph/cm2/s
Error -------- -------- -------- -------- -------- -------- ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 3.443 1.462 - - 1.36e-04 1.65e-04 69.240 57
CPL -2.046 0.000 15.6 0.0 4.45e+00 0.00e+00 69.280 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 3.443 1.462 - - 1.36e-04 1.65e-04 69.240 57
CPL -2.046 0.000 15.6 0.0 4.45e+00 0.00e+00 69.280 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 64.000 0.000 64.000
T90 64.000 0.000 64.000
T50 64.000 0.000 64.000
Peak 64.000 0.000 64.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
245.0040 -59.2677 0.0725 32.2 -144.8 0.4158 2.7 TRIG_00609694
------------------------------------------
Foreground time interval of the image:
0.000 64.000 (delta_t = 64.000 [sec])
Background time interval of the image:
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
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.44287 ( -1.14959 1.77422 )
Norm@50keV : 1.35619E-04 ( -0.000135618 0.0001941 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.24 using 59 PHA bins.
# Reduced chi-squared = 1.215 for 57 degrees of freedom
# Null hypothesis probability = 1.281747e-01
Photon flux (15-150 keV) in 64 sec: 5.23782E-02 ( -0.0207471 0.0208966 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.31939e-07 ( -6.2973e-08 8.06842e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -2.04556 ( )
Epeak [keV] : 15.5792 ( )
Norm@50keV : 4.45335 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.28 using 59 PHA bins.
# Reduced chi-squared = 1.237 for 56 degrees of freedom
# Null hypothesis probability = 1.095305e-01
Photon flux (15-150 keV) in 64 sec: 5.21114E-02 ( -0.0205426 0.0208749 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.32331e-07 ( -7.15098e-08 7.63642e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 3.53714 ( 1.84201 1.84201 )
beta : -5.06877 ( 3.80795 3.32074 )
Epeak [keV] : 17.0505 ( -2.16169 44.4727 )
Norm@50keV : 65.5504 ( -67.3846 379.078 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.96 using 59 PHA bins.
# Reduced chi-squared = 1.254 for 55 degrees of freedom
# Null hypothesis probability = 9.770687e-02
Photon flux (15-150 keV) in 64 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] : 3.90001 (-1.25522 1.93475)
R^2/D10^2 : 1.53059 (-1.53059 12.3158)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.28 using 59 PHA bins.
# Reduced chi-squared = 1.215 for 57 degrees of freedom
# Null hypothesis probability = 1.275052e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.871e-08 4.829e-08
25- 50 2.642e-08 1.820e-08
50-150 2.751e-10 3.242e-10
15-150 1.054e-07 6.378e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.4493 (-5.48001 18.7603)
Norm : 1.61859 (-1.61854 8.13547)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.39 using 59 PHA bins.
# Reduced chi-squared = 1.217 for 57 degrees of freedom
# Null hypothesis probability = 1.256167e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.512e-08 4.605e-08
25- 50 3.428e-08 2.279e-08
50-150 2.644e-09 3.219e-09
15-150 1.120e-07 6.899e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.80418 (-2.39941 1.75858)
R1^2/D10^2 : 1.71721 (-1.28511 17.4049)
kT2 [keV] : 199.304 (-199.363 -199.363)
R2^2/D10^2 : 4.61514E-06 (-4.86296e-06 4.14311)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.24 using 59 PHA bins.
# Reduced chi-squared = 1.223 for 55 degrees of freedom
# Null hypothesis probability = 1.245126e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.834e-08 4.810e-08
25- 50 2.755e-08 1.713e-08
50-150 7.839e-08 3.318e-10
15-150 1.843e-07 6.653e-08
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 3.44287 ( -1.14959 1.77422 )
Norm@50keV : 1.35619E-04 ( -0.000135618 0.0001941 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.24 using 59 PHA bins.
# Reduced chi-squared = 1.215 for 57 degrees of freedom
# Null hypothesis probability = 1.281747e-01
Photon flux (15-150 keV) in 64 sec: 5.23782E-02 ( -0.0207471 0.0208966 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.31939e-07 ( -6.2973e-08 8.06842e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -2.04556 ( )
Epeak [keV] : 15.5792 ( )
Norm@50keV : 4.45335 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.28 using 59 PHA bins.
# Reduced chi-squared = 1.237 for 56 degrees of freedom
# Null hypothesis probability = 1.095305e-01
Photon flux (15-150 keV) in 64 sec: 5.21114E-02 ( -0.0205426 0.0208749 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.32331e-07 ( -7.15098e-08 7.63642e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 3.53714 ( 1.84201 1.84201 )
beta : -5.06877 ( 3.80795 3.32074 )
Epeak [keV] : 17.0505 ( -2.16169 44.4727 )
Norm@50keV : 65.5504 ( -67.3846 379.078 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 68.96 using 59 PHA bins.
# Reduced chi-squared = 1.254 for 55 degrees of freedom
# Null hypothesis probability = 9.770687e-02
Photon flux (15-150 keV) in 64 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] : 3.90001 (-1.25522 1.93475)
R^2/D10^2 : 1.53059 (-1.53059 12.3158)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.28 using 59 PHA bins.
# Reduced chi-squared = 1.215 for 57 degrees of freedom
# Null hypothesis probability = 1.275052e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.871e-08 4.787e-08
25- 50 2.642e-08 1.804e-08
50-150 2.751e-10 3.450e-10
15-150 1.054e-07 6.349e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 10.4493 (-5.48001 18.7603)
Norm : 1.61859 (-1.61854 8.13547)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 69.39 using 59 PHA bins.
# Reduced chi-squared = 1.217 for 57 degrees of freedom
# Null hypothesis probability = 1.256167e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.512e-08 4.685e-08
25- 50 3.428e-08 2.391e-08
50-150 2.644e-09 2.748e-09
15-150 1.120e-07 7.053e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 3.80418 (-2.39941 1.75858)
R1^2/D10^2 : 1.71721 (-1.28511 17.4049)
kT2 [keV] : 199.304 (-199.363 -199.363)
R2^2/D10^2 : 4.61514E-06 (-4.86296e-06 4.14311)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.24 using 59 PHA bins.
# Reduced chi-squared = 1.223 for 55 degrees of freedom
# Null hypothesis probability = 1.245126e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.834e-08 4.624e-08
25- 50 2.755e-08 1.637e-08
50-150 7.839e-08 4.205e-10
15-150 1.843e-07 6.762e-08
Plot creation:
Sun Aug 17 06:49:58 EDT 2014