batgrbproduct Analysis for Trigger=704327
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): Thu Jul 14 23:37:20 EDT 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger704327/GCN5_download_cron
======================================================================
Trigger: 00704327 Segment: 000
BAT Trigger Time: 490166482.88 [s; MET]
Trigger Stop: 490166485.952 [s; MET]
UTC: 2016-07-14T05:21:06.322840 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 272.612931989463 Dec: 72.0565484537899 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 6.75
Image Trigger?: NO
Rate S/N Ratio: 7.07106781186548 [ if not an image trigger ]
Image S/N Ratio: 6.75
Flight Position: [ source = BAT ]
RA: 272.612931989463 Dec: 72.0565484537899 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 272.362353925543 Dec: 72.0449443505521 [deg; J2000]
{ 18h 09m 27.0s , +72d 02' 41.8" }
+/- 4.8715420602056 [arcmin] (estimated 90% radius based on SNR)
+/- 3.16312424393316 [arcmin] (formal 1-sigma fit error)
SNR: 3.16765392615591
Angular difference between Flight and Ground position is 4.685323 arcmin
Partial Coding Fraction: 0.3945312 [ including projection effects ]
Duration
T90: 3.07200002670288 +/-
Measured from: 0
to: 3.07200002670288 [s; relative to TRIGTIME]
T50: 3.07200002670288 +/-
Measured from: 0
to: 3.07200002670288 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 3.07200002670288 second)
Measured from: 0
to: 3.07200002670288 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 3.07200002670288 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total -0.013717 0.062789 0.032404 -0.004684
0.016336 0.017110 0.014579 0.012785 [error]
Peak -0.013717 0.062789 0.032404 -0.004684
0.016336 0.017110 0.014579 0.012785 [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 7.71e-09 1.45e-08 2.12e-08 6.56e-08 6.00e-08 1.15e-07 erg/cm2
Error 5.64e-09 7.74e-09 1.29e-08 8.95e-08 3.32e-08 9.40e-08 erg/cm2
Peak flux Power-law 8.09e-02 8.35e-02 6.07e-02 7.08e-02 2.53e-01 2.98e-01 ph/cm2/s
Error 5.99e-02 4.50e-02 3.61e-02 8.92e-02 1.32e-01 1.55e-01 ph/cm2/s
Fluence Cutoff-PL 1.68e-09 2.66e-08 2.10e-08 1.71e-10 4.94e-08 4.94e-08 erg/cm2
Error 3.46e-09 1.29e-08 1.68e-08 3.78e-09 2.24e-08 2.24e-08 erg/cm2
Peak flux Cutoff-PL 1.58e-02 1.41e-01 6.98e-02 3.29e-04 2.27e-01 2.28e-01 ph/cm2/s
Error 3.47e-02 7.31e-02 5.06e-02 6.42e-03 1.01e-01 1.01e-01 ph/cm2/s
Fluence Band 3.33e-09 2.50e-08 2.46e-08 1.26e-09 5.45e-08 5.45e-08 erg/cm2
Error 3.47e-09 1.14e-08 1.58e-08 -------- -------- -------- 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 1.398 0.748 - - 2.06e-03 1.06e-03 60.190 57
CPL -7.708 -0.801 49.1 11.9 9.86e+01 1.06e+03 51.660 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.398 0.748 - - 2.06e-03 1.06e-03 60.190 57
CPL -7.708 -0.801 49.1 11.9 9.86e+01 1.06e+03 51.660 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 3.072 0.000 3.072
T90 3.072 0.000 3.072
T50 3.072 0.000 3.072
Peak 3.072 0.000 3.072
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
272.3624 +72.0449 0.0603 32.3 -115.2 0.1034 3.2 TRIG_00704327
------------------------------------------
Foreground time interval of the image:
0.000 3.072 (delta_t = 3.072 [sec])
Background time interval of the image:
-112.579 -10.880 (delta_t = 101.699 [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 0.000 sec. to 3.072 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.39802 ( -0.766628 0.728787 )
Norm@50keV : 2.06070E-03 ( -0.00107911 0.00104554 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.19 using 59 PHA bins.
# Reduced chi-squared = 1.056 for 57 degrees of freedom
# Null hypothesis probability = 3.609330e-01
Photon flux (15-150 keV) in 3.072 sec: 0.252542 ( -0.130526 0.133066 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.99925e-08 ( -3.27638e-08 3.37195e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 3.072 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -7.70842 ( 7.74681 6.14456 )
Epeak [keV] : 49.0911 ( -9.561 14.2309 )
Norm@50keV : 98.5718 ( -111.06 2003.2 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.66 using 59 PHA bins.
# Reduced chi-squared = 0.9225 for 56 degrees of freedom
# Null hypothesis probability = 6.397349e-01
Photon flux (15-150 keV) in 3.072 sec: 0.226957 ( -0.091396 0.111087 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.94454e-08 ( -1.98909e-08 2.48393e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 3.072 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -3.83435 -5 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 50.8373 ( -10.015 13.4918 )
Norm@50keV : 4.46824 ( -1.72078 13.9161 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.11 using 59 PHA bins.
# Reduced chi-squared = 0.9475 for 55 degrees of freedom
# Null hypothesis probability = 5.855978e-01
Photon flux (15-150 keV) in 3.072 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 5.4477e-08 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 14.3233 (-3.87308 6.12486)
R^2/D10^2 : 4.39591E-02 (-0.0438946 0.0899926)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.48 using 59 PHA bins.
# Reduced chi-squared = 0.9558 for 57 degrees of freedom
# Null hypothesis probability = 5.702567e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.838e-09 3.941e-09
25- 50 2.221e-08 1.398e-08
50-150 3.034e-08 2.295e-08
15-150 5.839e-08 3.803e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 174.875 (-174.875 -174.875)
Norm : 1.08621 (-0.545271 0.774141)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.46 using 59 PHA bins.
# Reduced chi-squared = 1.043 for 57 degrees of freedom
# Null hypothesis probability = 3.862882e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.442e-09 5.657e-09
25- 50 1.598e-08 9.999e-09
50-150 3.348e-08 2.238e-08
15-150 5.791e-08 3.774e-08
Double BB
# Reduced chi-squared = 0.9679 for 55 degrees of freedom
# Reduced chi-squared = 0.9653 for 55 degrees of freedom
# Reduced chi-squared = 0.9639 for 55 degrees of freedom
# Reduced chi-squared = 0.9631 for 55 degrees of freedom
# Reduced chi-squared = 0.9627 for 55 degrees of freedom
# Reduced chi-squared = 0.9625 for 55 degrees of freedom
# Null hypothesis probability = 5.339856e-01
# Null hypothesis probability = 5.424384e-01
# Null hypothesis probability = 5.478616e-01
# Null hypothesis probability = 5.509435e-01
# Null hypothesis probability = 5.525378e-01
# Null hypothesis probability = 5.533502e-01
# Null hypothesis probability = 5.537719e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.945e-09 3.685e-09
25- 50 2.130e-08 1.333e-08
50-150 3.083e-08 2.315e-08
15-150 5.808e-08 3.937e-08
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 3.072 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.39802 ( -0.766628 0.728787 )
Norm@50keV : 2.06070E-03 ( -0.00107911 0.00104554 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.19 using 59 PHA bins.
# Reduced chi-squared = 1.056 for 57 degrees of freedom
# Null hypothesis probability = 3.609330e-01
Photon flux (15-150 keV) in 3.072 sec: 0.252542 ( -0.130526 0.133066 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.99925e-08 ( -3.27638e-08 3.37195e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 3.072 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -7.70842 ( 7.74681 6.14456 )
Epeak [keV] : 49.0911 ( -9.561 14.2309 )
Norm@50keV : 98.5718 ( -111.06 2003.2 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.66 using 59 PHA bins.
# Reduced chi-squared = 0.9225 for 56 degrees of freedom
# Null hypothesis probability = 6.397349e-01
Photon flux (15-150 keV) in 3.072 sec: 0.226957 ( -0.091396 0.111087 ) ph/cm2/s
Energy fluence (15-150 keV) : 4.94454e-08 ( -1.98909e-08 2.48393e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 3.072 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -3.83435 -5 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 50.8373 ( -10.015 13.4918 )
Norm@50keV : 4.46824 ( -1.72078 13.9161 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.11 using 59 PHA bins.
# Reduced chi-squared = 0.9475 for 55 degrees of freedom
# Null hypothesis probability = 5.855978e-01
Photon flux (15-150 keV) in 3.072 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 5.4477e-08 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 14.3233 (-3.87308 6.12486)
R^2/D10^2 : 4.39591E-02 (-0.0438946 0.0899926)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.48 using 59 PHA bins.
# Reduced chi-squared = 0.9558 for 57 degrees of freedom
# Null hypothesis probability = 5.702567e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.838e-09 3.906e-09
25- 50 2.221e-08 1.434e-08
50-150 3.034e-08 2.293e-08
15-150 5.839e-08 3.875e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 174.875 (-174.875 -174.875)
Norm : 1.08621 (-0.545271 0.774141)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 59.46 using 59 PHA bins.
# Reduced chi-squared = 1.043 for 57 degrees of freedom
# Null hypothesis probability = 3.862882e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 8.442e-09 5.809e-09
25- 50 1.598e-08 1.007e-08
50-150 3.348e-08 2.293e-08
15-150 5.791e-08 3.869e-08
Double BB
# Reduced chi-squared = 0.9679 for 55 degrees of freedom
# Reduced chi-squared = 0.9653 for 55 degrees of freedom
# Reduced chi-squared = 0.9639 for 55 degrees of freedom
# Reduced chi-squared = 0.9631 for 55 degrees of freedom
# Reduced chi-squared = 0.9627 for 55 degrees of freedom
# Reduced chi-squared = 0.9625 for 55 degrees of freedom
# Null hypothesis probability = 5.339856e-01
# Null hypothesis probability = 5.424384e-01
# Null hypothesis probability = 5.478616e-01
# Null hypothesis probability = 5.509435e-01
# Null hypothesis probability = 5.525378e-01
# Null hypothesis probability = 5.533502e-01
# Null hypothesis probability = 5.537719e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.945e-09 3.686e-09
25- 50 2.130e-08 1.262e-08
50-150 3.083e-08 2.307e-08
15-150 5.808e-08 3.792e-08
Plot creation:
Thu Jul 14 23:43:32 EDT 2016