batgrbproduct Analysis for Trigger=729600
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 15 downlinks after the trigger.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time (local time): Wed Jan 4 05:20:30 EST 2017
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger729600/GCN5_download_cron
======================================================================
Trigger: 00729600 Segment: 000
BAT Trigger Time: 505117938.752 [s; MET]
Trigger Stop: 505117939.776 [s; MET]
UTC: 2017-01-03T06:32:00.348460 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 155.756619087021 Dec: -68.4705765858717 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 6.12
Image Trigger?: NO
Rate S/N Ratio: 22.9782505861521 [ if not an image trigger ]
Image S/N Ratio: 6.12
Flight Position: [ source = BAT ]
RA: 155.756619087021 Dec: -68.4705765858717 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 155.698369163955 Dec: -68.4525202226287 [deg; J2000]
{ 10h 22m 47.6s , -68d 27' 09.1" }
+/- 4.94167210944731 [arcmin] (estimated 90% radius based on SNR)
+/- 2.64775480561398 [arcmin] (formal 1-sigma fit error)
SNR: 3.10362981148315
Angular difference between Flight and Ground position is 1.679305 arcmin
Partial Coding Fraction: 0.9375 [ including projection effects ]
Duration
T90: 118.6400000453 +/- 15.1151314653162
Measured from: -20.3919998407364
to: 98.2480002045631 [s; relative to TRIGTIME]
T50: 55.2960000038147 +/- 6.76323228127442
Measured from: 30.6320001482964
to: 85.9280001521111 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 99.0200000405312
to: 100.020000040531 [s; relative to TRIGTIME]
Total Fluence
Measured from: -44.7439999580383
to: 103.320000052452 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.876819 3.333501 1.719759 2.636151
0.132970 0.162954 0.150376 0.185356 [error]
Peak 0.062428 0.050563 0.067734 0.094998
0.016315 0.020282 0.018993 0.023992 [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 5.78e-07 1.10e-06 1.63e-06 5.18e-06 4.61e-06 8.50e-06 erg/cm2
Error 5.99e-08 7.06e-08 1.50e-07 1.02e-06 3.61e-07 1.14e-06 erg/cm2
Peak flux Power-law 3.09e-01 4.42e-01 4.70e-01 9.26e-01 1.51e+00 2.15e+00 ph/cm2/s
Error 2.68e-01 1.74e-01 1.64e-01 9.32e-01 4.35e-01 9.05e-01 ph/cm2/s
Fluence Cutoff-PL 5.79e-07 1.11e-06 1.63e-06 5.12e-06 4.61e-06 8.43e-06 erg/cm2
Error 6.07e-08 7.65e-08 1.50e-07 2.02e-06 4.02e-07 2.19e-06 erg/cm2
Peak flux Cutoff-PL 3.38e-01 4.56e-01 4.55e-01 8.16e-01 1.51e+00 2.05e+00 ph/cm2/s
Error 2.70e-01 1.76e-01 1.66e-01 1.11e+00 4.34e-01 9.32e-01 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 1.436 0.115 - - 3.27e-03 2.20e-04 85.230 57
CPL 1.436 0.116 9999.4 0.0 3.27e-03 1.68e-03 85.240 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 0.912 0.705 - - 1.31e-02 3.83e-03 54.960 57
CPL 0.914 0.700 10000.0 0.0 1.32e-02 -4.72e-03 54.980 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: 98.496000 sec.
T50 in the 50-300 keV band: 49.408000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 148.064 -44.744 103.320
T90 118.640 -20.392 98.248
T50 55.296 30.632 85.928
Peak 1.000 99.020 100.020
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
155.6984 -68.4525 0.0618 12.3 126.3 9.1697 3.1 TRIG_00729600
------------------------------------------
Foreground time interval of the image:
-44.744 84.295 (delta_t = 129.039 [sec])
85.248 103.320 (delta_t = 18.072 [sec])
Background time interval of the image:
-49.351 -44.744 (delta_t = 4.607 [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
-44.744000 84.295200
85.248000 103.320000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.43569 ( -0.114937 0.115556 )
Norm@50keV : 3.26731E-03 ( -0.00022131 0.000219629 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 85.23 using 59 PHA bins.
# Reduced chi-squared = 1.495 for 57 degrees of freedom
# Null hypothesis probability = 9.079146e-03
Photon flux (15-150 keV) in 147.1 sec: 0.401241 ( -0.0251711 0.0251723 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.61151e-06 ( -3.58003e-07 3.63133e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-44.744000 84.295200
85.248000 103.320000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.43647 ( -0.117582 0.113934 )
Epeak [keV] : 9999.36 ( -9999.36 -9999.36 )
Norm@50keV : 3.27288E-03 ( -0.000843414 0.0025138 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 85.24 using 59 PHA bins.
# Reduced chi-squared = 1.522 for 56 degrees of freedom
# Null hypothesis probability = 7.122683e-03
Photon flux (15-150 keV) in 147.1 sec: 0.401123 ( -0.025173 0.025143 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.60575e-06 ( -4.4305e-07 3.61734e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
-44.744000 84.295200
85.248000 103.320000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.05630 ( -1.34977 -1.20853 )
beta : -1.78502 ( -0.296419 0.231662 )
Epeak [keV] : 36.4406 ( -8.32189 11.3172 )
Norm@50keV : 0.667299 ( -0.667123 37.0718 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 73.60 using 59 PHA bins.
# Reduced chi-squared = 1.338 for 55 degrees of freedom
# Null hypothesis probability = 4.770935e-02
Photon flux (15-150 keV) in 147.1 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] : 11.9362 ( )
R^2/D10^2 : 0.100966 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 125.10 using 59 PHA bins.
# Reduced chi-squared = 2.1948 for 57 degrees of freedom
# Null hypothesis probability = 5.186805e-07
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.473e-07 4.972e-08
25- 50 1.399e-06 9.525e-08
50-150 1.194e-06 1.901e-07
15-150 3.041e-06 2.457e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-37.5642 -200)
Norm : 1.63093 (-0.102389 0.102389)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 87.41 using 59 PHA bins.
# Reduced chi-squared = 1.533 for 57 degrees of freedom
# Null hypothesis probability = 5.912573e-03
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.975e-07 4.310e-08
25- 50 1.149e-06 1.060e-07
50-150 2.521e-06 7.081e-07
15-150 4.268e-06 8.157e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 9.35703 (-0.705614 0.62124)
R1^2/D10^2 : 0.205654 (-0.0578648 0.0666709)
kT2 [keV] : 199.363 (-117.611 -199.363)
R2^2/D10^2 : 6.69213E-05 (-1.05533e-05 0.000204842)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 48.67 using 59 PHA bins.
# Reduced chi-squared = 0.8850 for 55 degrees of freedom
# Null hypothesis probability = 7.135497e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.381e-07 7.406e-08
25- 50 1.293e-06 1.817e-07
50-150 3.115e-06 1.472e-06
15-150 4.946e-06 1.706e-06
Peak spectrum fit
Power-law model
Time interval is from 99.020 sec. to 100.020 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.911623 ( -0.775653 0.634292 )
Norm@50keV : 1.31415E-02 ( -0.00389817 0.00376388 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.96 using 59 PHA bins.
# Reduced chi-squared = 0.9642 for 57 degrees of freedom
# Null hypothesis probability = 5.520539e-01
Photon flux (15-150 keV) in 1 sec: 1.50848 ( -0.435212 0.434219 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.46868e-07 ( -5.16885e-08 5.38352e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 99.020 sec. to 100.020 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.914437 ( -0.821106 0.579749 )
Epeak [keV] : 1.00000E+04 ( -10000 -10000 )
Norm@50keV : 1.32183E-02 ( -0.00377441 -0.0132223 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.98 using 59 PHA bins.
# Reduced chi-squared = 0.9818 for 56 degrees of freedom
# Null hypothesis probability = 5.134520e-01
Photon flux (15-150 keV) in 1 sec: 1.51311 ( -0.43601 0.4323 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.43574e-07 ( -4.82686e-08 5.231e-08 ) ergs/cm2
Band function
Time interval is from 99.020 sec. to 100.020 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.854845 ( 0.854762 0.854762 )
beta : -0.923581 ( 0.922843 0.787563 )
Epeak [keV] : 17.0430 ( -16.9042 -16.9042 )
Norm@50keV : 1.84306E-02 ( -0.00893791 0.256573 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.96 using 59 PHA bins.
# Reduced chi-squared = 0.9993 for 55 degrees of freedom
# Null hypothesis probability = 4.761657e-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] : 43.6029 (-27.0461 -43.8764)
R^2/D10^2 : 8.17305E-03 (-0.00799212 0.103263)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 61.19 using 59 PHA bins.
# Reduced chi-squared = 1.073 for 57 degrees of freedom
# Null hypothesis probability = 3.281304e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.882e-09 1.154e-09
25- 50 1.315e-08 7.760e-09
50-150 1.392e-07 8.015e-08
15-150 1.542e-07 8.930e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 (-107.2 -199.363)
Norm : 5.78945 (-1.74386 1.74503)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.35 using 59 PHA bins.
# Reduced chi-squared = 1.024 for 57 degrees of freedom
# Null hypothesis probability = 4.255846e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.442e-08 9.085e-09
25- 50 2.773e-08 1.761e-08
50-150 6.082e-08 3.776e-08
15-150 1.030e-07 6.320e-08
Double BB
R1^2/D10^2 : 2.16140 (-1.89549 23.0223)
kT2 [keV] : 199.363 (-160.482 -199.363)
R2^2/D10^2 : 5.20823E-04 (-0.000193832 0.00260218)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 50.54 using 59 PHA bins.
#Fit statistic : Chi-Squared = 50.17 using 59 PHA bins.
#Fit statistic : Chi-Squared = 50.15 using 59 PHA bins.
# Reduced chi-squared = 0.9189 for 55 degrees of freedom
# Reduced chi-squared = 0.9121 for 55 degrees of freedom
# Reduced chi-squared = 0.9118 for 55 degrees of freedom
# Null hypothesis probability = 6.455169e-01
# Null hypothesis probability = 6.594676e-01
# Null hypothesis probability = 6.600195e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.340e-08 8.270e-09
25- 50 2.347e-08 1.395e-08
50-150 1.376e-07 1.083e-07
15-150 1.745e-07 1.081e-07
Plot creation:
Wed Jan 4 05:26:30 EST 2017