batgrbproduct Analysis for Trigger=715084
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 Oct 5 15:06:18 EDT 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger715084/GCN5_download_cron
======================================================================
Trigger: 00715084 Segment: 000
BAT Trigger Time: 497278725.632 [s; MET]
Trigger Stop: 497278726.656 [s; MET]
UTC: 2016-10-04T12:58:28.674640 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 263.170818888793 Dec: -0.928319619942499 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 8.19
Image Trigger?: NO
Rate S/N Ratio: 13.490737563232 [ if not an image trigger ]
Image S/N Ratio: 8.19
Flight Position: [ source = BAT ]
RA: 263.170818888793 Dec: -0.928319619942499 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 263.108624185968 Dec: -0.926745781935892 [deg; J2000]
{ 17h 32m 26.1s , -00d 55' 36.3" }
+/- 2.22704507373692 [arcmin] (estimated 90% radius based on SNR)
+/- 0.944073209724737 [arcmin] (formal 1-sigma fit error)
SNR: 9.6908675037332
Angular difference between Flight and Ground position is 3.732388 arcmin
Partial Coding Fraction: 0.921875 [ including projection effects ]
Duration
T90: 3 +/- 1.4142135623731
Measured from: -0.631999909877777
to: 2.36800009012222 [s; relative to TRIGTIME]
T50: 1 +/- 1
Measured from: -0.631999909877777
to: 0.368000090122223 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.367999970912933
to: 1.36799997091293 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.632000029087067
to: 2.36799997091293 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.037310 0.078967 0.061683 0.017567
0.013327 0.012438 0.010233 0.008307 [error]
Peak 0.023906 0.041251 0.026548 0.008611
0.007695 0.007371 0.006097 0.004974 [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 1.38e-08 2.88e-08 4.68e-08 1.71e-07 1.30e-07 2.61e-07 erg/cm2
Error 4.91e-09 6.04e-09 9.75e-09 8.35e-08 2.45e-08 8.84e-08 erg/cm2
Peak flux Power-law 2.76e-01 2.61e-01 1.71e-01 1.74e-01 7.80e-01 8.83e-01 ph/cm2/s
Error 1.02e-01 6.05e-02 4.97e-02 1.04e-01 1.76e-01 1.95e-01 ph/cm2/s
Fluence Cutoff-PL 1.37e-08 2.89e-08 4.71e-08 1.57e-07 1.29e-07 2.46e-07 erg/cm2
Error 5.38e-09 6.56e-09 1.05e-08 1.26e-07 2.58e-08 1.19e-07 erg/cm2
Peak flux Cutoff-PL 2.65e-01 2.70e-01 1.74e-01 1.18e-01 7.71e-01 8.27e-01 ph/cm2/s
Error 1.11e-01 7.34e-02 5.34e-02 1.45e-01 1.80e-01 2.32e-01 ph/cm2/s
Fluence Band -------- -------- -------- -------- -------- -------- erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Band 2.42e-01 2.96e-01 1.66e-01 1.37e-01 7.63e-01 8.40e-01 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 1.298 0.326 - - 4.37e-03 7.73e-04 80.930 57
CPL 2.449 1.297 148.2 0.0 9.48e-04 0.00e+00 80.620 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.607 0.391 - - 6.06e-03 1.39e-03 71.730 57
CPL 1.305 1.513 107.6 0.0 8.79e-03 4.97e-02 71.590 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: 2.816000 sec.
T50 in the 50-300 keV band: 1.472000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 3.000 -0.632 2.368
T90 3.000 -0.632 2.368
T50 1.000 -0.632 0.368
Peak 1.000 0.368 1.368
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
263.1086 -0.9267 0.0199 26.5 -6.9 0.2168 9.7 TRIG_00715084
------------------------------------------
Foreground time interval of the image:
-0.632 2.368 (delta_t = 3.000 [sec])
Background time interval of the image:
-239.632 -0.632 (delta_t = 239.000 [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
Time interval is from -0.632 sec. to 2.368 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.29780 ( -0.333192 0.319078 )
Norm@50keV : 4.36690E-03 ( -0.000774086 0.000772093 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 80.93 using 59 PHA bins.
# Reduced chi-squared = 1.420 for 57 degrees of freedom
# Null hypothesis probability = 2.030079e-02
Photon flux (15-150 keV) in 3 sec: 0.520764 ( -0.0982175 0.0990867 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.29529e-07 ( -2.43929e-08 2.46282e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -0.632 sec. to 2.368 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.44902 ( -2.48932 0.104981 )
Epeak [keV] : 148.170 ( )
Norm@50keV : 9.48435E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 80.62 using 59 PHA bins.
# Reduced chi-squared = 1.440 for 56 degrees of freedom
# Null hypothesis probability = 1.725732e-02
Photon flux (15-150 keV) in 3 sec: 0.518332 ( -0.100882 0.101038 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.29137e-07 ( -2.67792e-08 2.48727e-08 ) ergs/cm2
Band function
Time interval is from -0.632 sec. to 2.368 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.344709 ( 0.617987 0.617987 )
beta : -1.49644 ( 1.46617 0.478284 )
Epeak [keV] : 74.1409 ( -72.5225 236.188 )
Norm@50keV : 1.44397E-02 ( -0.0150798 302890 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 80.55 using 59 PHA bins.
# Reduced chi-squared = 1.465 for 55 degrees of freedom
# Null hypothesis probability = 1.397910e-02
Photon flux (15-150 keV) in 3 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] : 16.7226 (-3.72978 5.84915)
R^2/D10^2 : 4.12947E-02 (-0.0262686 0.0589439)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 88.31 using 59 PHA bins.
# Reduced chi-squared = 1.549 for 57 degrees of freedom
# Null hypothesis probability = 4.923415e-03
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.087e-09 2.521e-09
25- 50 3.094e-08 1.048e-08
50-150 6.145e-08 2.411e-08
15-150 9.948e-08 2.880e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-73.0597 -200)
Norm : 2.19488 (-0.392112 0.392112)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 82.87 using 59 PHA bins.
# Reduced chi-squared = 1.454 for 57 degrees of freedom
# Null hypothesis probability = 1.423008e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.640e-08 9.643e-09
25- 50 3.155e-08 1.798e-08
50-150 6.918e-08 3.922e-08
15-150 1.171e-07 6.777e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 10.4643 (-3.42456 3.9759)
R1^2/D10^2 : 0.157689 (-0.0947405 0.332443)
kT2 [keV] : 60.4329 (-45.7852 -72.4484)
R2^2/D10^2 : 5.91753E-04 (-0.00021944 0.00624341)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 79.20 using 59 PHA bins.
# Reduced chi-squared = 1.440 for 55 degrees of freedom
# Null hypothesis probability = 1.796534e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.131e-08 6.871e-09
25- 50 3.289e-08 1.851e-08
50-150 8.286e-08 4.207e-08
15-150 1.271e-07 6.262e-08
Peak spectrum fit
Power-law model
Time interval is from 0.368 sec. to 1.368 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.60728 ( -0.387914 0.393982 )
Norm@50keV : 6.05691E-03 ( -0.00140604 0.00138138 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.73 using 59 PHA bins.
# Reduced chi-squared = 1.258 for 57 degrees of freedom
# Null hypothesis probability = 9.060443e-02
Photon flux (15-150 keV) in 1 sec: 0.780105 ( -0.175281 0.175912 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.65951e-08 ( -1.37781e-08 1.40945e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.368 sec. to 1.368 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.30546 ( -1.93872 1.08741 )
Epeak [keV] : 107.637 ( -107.649 -107.649 )
Norm@50keV : 8.79317E-03 ( -0.00468565 0.0948006 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.59 using 59 PHA bins.
# Reduced chi-squared = 1.278 for 56 degrees of freedom
# Null hypothesis probability = 7.824096e-02
Photon flux (15-150 keV) in 1 sec: 0.770675 ( -0.179512 0.180729 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.50505e-08 ( -1.58292e-08 1.52562e-08 ) ergs/cm2
Band function
Time interval is from 0.368 sec. to 1.368 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.94324 ( -4.94324 -4.94324 )
beta : -1.84357 ( -0.687273 0.492305 )
Epeak [keV] : 28.2029 ( -28.2029 8.80648 )
Norm@50keV : 318.287 ( -69.0515 4.83344e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.54 using 59 PHA bins.
# Reduced chi-squared = 1.283 for 55 degrees of freedom
# Null hypothesis probability = 7.724933e-02
Photon flux (15-150 keV) in 1 sec: 0.763053 ( ) 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] : 12.2422 (-2.95246 4.69083)
R^2/D10^2 : 0.177567 (-0.123147 0.316274)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 76.21 using 59 PHA bins.
# Reduced chi-squared = 1.337 for 57 degrees of freedom
# Null hypothesis probability = 4.549994e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.637e-09 2.486e-09
25- 50 1.816e-08 7.185e-09
50-150 1.658e-08 9.061e-09
15-150 4.037e-08 1.690e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 169.463 (-97.5573 -162.993)
Norm : 3.16903 (-0.741664 1.0754)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 71.58 using 59 PHA bins.
# Reduced chi-squared = 1.256 for 57 degrees of freedom
# Null hypothesis probability = 9.253695e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.045e-09 4.619e-09
25- 50 1.517e-08 8.565e-09
50-150 3.141e-08 1.845e-08
15-150 5.462e-08 3.162e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 8.01321 (-3.51907 4.00816)
R1^2/D10^2 : 0.626091 (-0.428062 2.88303)
kT2 [keV] : 33.6742 (-29.8239 -37.2994)
R2^2/D10^2 : 3.35557E-03 (-0.00250945 0.0463726)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 70.47 using 59 PHA bins.
# Reduced chi-squared = 1.281 for 55 degrees of freedom
# Null hypothesis probability = 7.809879e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 7.832e-09 4.827e-09
25- 50 1.634e-08 9.420e-09
50-150 3.043e-08 1.903e-08
15-150 5.460e-08 2.911e-08
Plot creation:
Wed Oct 5 15:10:47 EDT 2016