batgrbproduct Analysis for Trigger=702699
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 Jul 3 19:20:32 EDT 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger702699/GCN5_download_cron
======================================================================
Trigger: 00702699 Segment: 000
BAT Trigger Time: 489240621.632 [s; MET]
Trigger Stop: 489240622.656 [s; MET]
UTC: 2016-07-03T12:10:05.126360 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 287.392582646627 Dec: 36.9010907591217 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 12.8
Image Trigger?: NO
Rate S/N Ratio: 49.3254498205541 [ if not an image trigger ]
Image S/N Ratio: 12.8
Flight Position: [ source = BAT ]
RA: 287.392582646627 Dec: 36.9010907591217 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 287.414235979882 Dec: 36.912722921533 [deg; J2000]
{ 19h 09m 39.4s , +36d 54' 45.8" }
+/- 0.843998177505301 [arcmin] (estimated 90% radius based on SNR)
+/- 0.285449189762694 [arcmin] (formal 1-sigma fit error)
SNR: 38.7565219365692
Angular difference between Flight and Ground position is 1.251530 arcmin
Partial Coding Fraction: 0.84375 [ including projection effects ]
Duration
T90: 44.4439999461174 +/- 2.83861658518632
Measured from: -7.91199988126755
to: 36.5320000648499 [s; relative to TRIGTIME]
T50: 20.3719999790192 +/- 0.351931829716768
Measured from: 6.72000008821487
to: 27.092000067234 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 26.6439999938011
to: 27.6439999938011 [s; relative to TRIGTIME]
Total Fluence
Measured from: -26.4280000329018
to: 52.567999958992 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 3.473905 4.870762 4.183561 1.161391
0.057898 0.062495 0.056371 0.044850 [error]
Peak 0.194394 0.271286 0.198161 0.046524
0.008614 0.009665 0.008437 0.005490 [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 1.01e-06 2.05e-06 3.25e-06 1.14e-05 9.03e-06 1.77e-05 erg/cm2
Error 4.15e-08 4.80e-08 6.43e-08 5.53e-07 1.63e-07 5.69e-07 erg/cm2
Peak flux Power-law 1.93e+00 1.93e+00 1.35e+00 1.50e+00 5.81e+00 6.72e+00 ph/cm2/s
Error 1.48e-01 8.89e-02 7.03e-02 1.63e-01 2.53e-01 2.80e-01 ph/cm2/s
Fluence Cutoff-PL 1.01e-06 2.06e-06 3.25e-06 1.13e-05 9.02e-06 1.76e-05 erg/cm2
Error 3.17e-08 4.82e-08 6.33e-08 6.15e-07 1.63e-07 5.19e-07 erg/cm2
Peak flux Cutoff-PL 1.84e+00 1.96e+00 1.38e+00 1.17e+00 5.74e+00 6.36e+00 ph/cm2/s
Error 1.82e-01 9.81e-02 8.00e-02 2.55e-01 2.65e-01 5.52e-01 ph/cm2/s
Fluence Band -------- -------- -------- -------- -------- -------- erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Band 1.81e+00 1.97e+00 1.39e+00 1.12e+00 5.73e+00 6.30e+00 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 1.339 0.035 - - 1.17e-02 2.11e-04 39.860 57
CPL 1.335 0.058 10000.0 0.0 1.17e-02 2.09e-04 39.930 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.514 0.075 - - 4.64e-02 1.95e-03 67.920 57
CPL 1.284 0.274 164.6 -50.5 5.98e-02 1.80e-02 65.830 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: 41.088000 sec.
T50 in the 50-300 keV band: 16.640000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 78.996 -26.428 52.568
T90 44.444 -7.912 36.532
T50 20.372 6.720 27.092
Peak 1.000 26.644 27.644
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
287.4142 +36.9127 0.0049 22.0 154.0 4.6482 38.8 TRIG_00702699
------------------------------------------
Foreground time interval of the image:
-26.428 9.869 (delta_t = 36.297 [sec])
Background time interval of the image:
-48.431 -26.428 (delta_t = 22.003 [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 -26.428 sec. to 52.568 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.33902 ( -0.0352808 0.0351197 )
Norm@50keV : 1.16681E-02 ( -0.000211321 0.000210991 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.86 using 59 PHA bins.
# Reduced chi-squared = 0.6993 for 57 degrees of freedom
# Null hypothesis probability = 9.588881e-01
Photon flux (15-150 keV) in 79 sec: 1.40254 ( -0.0292078 0.0293723 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.0252e-06 ( -1.62896e-07 1.62999e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from -26.428 sec. to 52.568 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.33504 ( -0.0687971 0.0474186 )
Epeak [keV] : 1.00000E+04 ( -10000 -10000 )
Norm@50keV : 1.17134E-02 ( -0.000211504 0.00020638 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.93 using 59 PHA bins.
# Reduced chi-squared = 0.7131 for 56 degrees of freedom
# Null hypothesis probability = 9.483840e-01
Photon flux (15-150 keV) in 79 sec: 1.40280 ( -0.03003 0.02823 ) ph/cm2/s
Energy fluence (15-150 keV) : 9.02441e-06 ( -1.60844e-07 1.659e-07 ) ergs/cm2
Band function
Time interval is from -26.428 sec. to 52.568 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 4.47970 ( -4.4797 -4.4797 )
beta : -1.34327 ( -0.0357002 0.0356016 )
Epeak [keV] : 21.1642 ( -21.1642 92.8169 )
Norm@50keV : 1098.45 ( -19.3531 2.95961e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.58 using 59 PHA bins.
# Reduced chi-squared = 0.7196 for 55 degrees of freedom
# Null hypothesis probability = 9.419030e-01
Photon flux (15-150 keV) in 79 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] : 20.2486 ( )
R^2/D10^2 : 5.68803E-02 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 699.80 using 59 PHA bins.
# Reduced chi-squared = 12.277 for 57 degrees of freedom
# Null hypothesis probability = 1.885216e-111
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.534e-07 1.422e-08
25- 50 1.775e-06 4.779e-08
50-150 5.403e-06 1.537e-07
15-150 7.531e-06 1.572e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.363 ( )
Norm : 6.00421 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 213.47 using 59 PHA bins.
# Reduced chi-squared = 3.7451 for 57 degrees of freedom
# Null hypothesis probability = 6.202282e-20
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.181e-06 2.607e-08
25- 50 2.272e-06 4.503e-08
50-150 4.983e-06 9.559e-08
15-150 8.436e-06 1.777e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.95767 (-0.585765 0.626435)
R1^2/D10^2 : 0.853395 (-0.194213 0.266764)
kT2 [keV] : 33.2252 (-2.22457 2.73361)
R2^2/D10^2 : 9.31270E-03 (-0.00213146 0.00245179)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.14 using 59 PHA bins.
# Reduced chi-squared = 1.003 for 55 degrees of freedom
# Null hypothesis probability = 4.693218e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.880e-07 6.162e-08
25- 50 2.098e-06 7.584e-08
50-150 6.030e-06 2.382e-07
15-150 9.015e-06 2.726e-07
Peak spectrum fit
Power-law model
Time interval is from 26.644 sec. to 27.644 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.51399 ( -0.0744028 0.074795 )
Norm@50keV : 4.63743E-02 ( -0.00195092 0.00194696 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.92 using 59 PHA bins.
# Reduced chi-squared = 1.192 for 57 degrees of freedom
# Null hypothesis probability = 1.525804e-01
Photon flux (15-150 keV) in 1 sec: 5.81138 ( -0.252449 0.252854 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.38941e-07 ( -1.99461e-08 2.00054e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 26.644 sec. to 27.644 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.28394 ( -0.288807 0.258379 )
Epeak [keV] : 164.615 ( -63.7085 -164.615 )
Norm@50keV : 5.98428E-02 ( -0.0142957 0.0217881 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.83 using 59 PHA bins.
# Reduced chi-squared = 1.176 for 56 degrees of freedom
# Null hypothesis probability = 1.731175e-01
Photon flux (15-150 keV) in 1 sec: 5.73890 ( -0.26528 0.2657 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.32996e-07 ( -2.1394e-08 2.1318e-08 ) ergs/cm2
Band function
Time interval is from 26.644 sec. to 27.644 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.677079 ( 0.663763 5.55918 )
beta : -1.58471 ( 1.58466 0.111205 )
Epeak [keV] : 53.6358 ( -52.4343 171.302 )
Norm@50keV : 0.155014 ( -0.166214 3019.24 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.72 using 59 PHA bins.
# Reduced chi-squared = 1.195 for 55 degrees of freedom
# Null hypothesis probability = 1.527376e-01
Photon flux (15-150 keV) in 1 sec: 5.72708 ( ) 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] : 15.8321 ( )
R^2/D10^2 : 0.534171 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 210.24 using 59 PHA bins.
# Reduced chi-squared = 3.6884 for 57 degrees of freedom
# Null hypothesis probability = 2.063909e-19
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.775e-08 2.510e-09
25- 50 1.157e-07 5.850e-09
50-150 2.019e-07 1.700e-08
15-150 3.454e-07 1.750e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-21.8413 -200)
Norm : 23.7738 (-0.984015 0.984015)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 67.85 using 59 PHA bins.
# Reduced chi-squared = 1.190 for 57 degrees of freedom
# Null hypothesis probability = 1.540406e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.921e-08 2.670e-09
25- 50 1.139e-07 5.000e-09
50-150 2.498e-07 1.175e-08
15-150 4.229e-07 2.055e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 7.09274 (-0.858098 0.931596)
R1^2/D10^2 : 5.75490 (-1.97897 3.35899)
kT2 [keV] : 27.6353 (-3.12401 4.21906)
R2^2/D10^2 : 6.19140E-02 (-0.0243821 0.0338113)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.26 using 59 PHA bins.
# Reduced chi-squared = 1.096 for 55 degrees of freedom
# Null hypothesis probability = 2.914565e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.491e-08 8.355e-09
25- 50 1.125e-07 1.173e-08
50-150 2.680e-07 4.075e-08
15-150 4.354e-07 4.940e-08
Plot creation:
Sun Jul 3 19:25:08 EDT 2016