batgrbproduct Analysis for Trigger=650140
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): Fri Jul 24 23:58:20 EDT 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger650140/GCN5_download_cron
======================================================================
Trigger: 00650140 Segment: 000
BAT Trigger Time: 459408232 [s; MET]
Trigger Stop: 459409248 [s; MET]
UTC: 2015-07-24T05:23:37.104260 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 7.19980543439795 Dec: 59.5651763370823 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 6.11
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 6.11
Flight Position: [ source = BAT ]
RA: 7.19980543439795 Dec: 59.5651763370823 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 7.22078504130269 Dec: 59.5456515561357 [deg; J2000]
{ 00h 28m 53.0s , +59d 32' 44.3" }
+/- 3.12672650004766 [arcmin] (estimated 90% radius based on SNR)
+/- 2.1558208065024 [arcmin] (formal 1-sigma fit error)
SNR: 5.96825131229932
Angular difference between Flight and Ground position is 1.333869 arcmin
Partial Coding Fraction: 0.703125 [ including projection effects ]
Duration
T90: 1016 +/-
Measured from: 0
to: 1016 [s; relative to TRIGTIME]
T50: 1016 +/-
Measured from: 0
to: 1016 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 1016 second)
Measured from: 0
to: 1016 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 1016 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 1.015640 1.008182 0.532399 0.045694
0.156280 0.150679 0.127767 0.109434 [error]
Peak 1.015640 1.008182 0.532399 0.045694
0.156280 0.150679 0.127767 0.109434 [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 3.08e-07 4.15e-07 4.13e-07 7.39e-07 1.38e-06 1.87e-06 erg/cm2
Error 7.00e-08 6.84e-08 1.23e-07 4.41e-07 2.80e-07 5.78e-07 erg/cm2
Peak flux Power-law 1.67e-02 1.24e-02 6.17e-03 4.37e-03 3.73e-02 3.96e-02 ph/cm2/s
Error 3.87e-03 2.02e-03 1.78e-03 2.43e-03 6.03e-03 6.52e-03 ph/cm2/s
Fluence Cutoff-PL 3.08e-07 4.15e-07 4.12e-07 7.28e-07 1.37e-06 1.86e-06 erg/cm2
Error 7.12e-08 7.83e-08 1.28e-07 6.29e-07 3.01e-07 5.49e-07 erg/cm2
Peak flux Cutoff-PL 1.67e-02 1.24e-02 6.12e-03 4.30e-03 3.73e-02 3.96e-02 ph/cm2/s
Error 3.96e-03 1.68e-03 1.38e-03 3.59e-03 6.03e-03 5.12e-03 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 2.009 0.325 - - 2.48e-04 5.34e-05 52.130 57
CPL 2.151 0.000 66.5 0.0 2.06e-04 0.00e+00 52.110 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.009 0.325 - - 2.48e-04 5.34e-05 52.130 57
CPL 2.151 0.000 66.5 0.0 2.06e-04 0.00e+00 52.110 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 1016.000 0.000 1016.000
T90 1016.000 0.000 1016.000
T50 1016.000 0.000 1016.000
Peak 1016.000 0.000 1016.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
7.2208 +59.5457 0.0320 18.7 82.3 2.5152 6.0 TRIG_00650140
------------------------------------------
Foreground time interval of the image:
0.000 161.910 (delta_t = 161.910 [sec])
163.000 603.100 (delta_t = 440.100 [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
Multiple GTIs in the spectrum
tstart tstop
0.000000 161.910000
163.000000 603.100000
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.00913 ( -0.310388 0.339299 )
Norm@50keV : 2.47638E-04 ( -5.45658e-05 5.23134e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.13 using 59 PHA bins.
# Reduced chi-squared = 0.9146 for 57 degrees of freedom
# Null hypothesis probability = 6.578312e-01
Photon flux (15-150 keV) in 602 sec: 3.73025E-02 ( -0.00603135 0.00603177 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.37546e-06 ( -2.74597e-07 2.8529e-07 ) ergs/cm2
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
0.000000 161.910000
163.000000 603.100000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.15068 ( )
Epeak [keV] : 66.4836 ( )
Norm@50keV : 2.06111E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.11 using 59 PHA bins.
# Reduced chi-squared = 0.9306 for 56 degrees of freedom
# Null hypothesis probability = 6.227443e-01
Photon flux (15-150 keV) in 602 sec: 3.72980E-02 ( -0.0060318 0.0060228 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.37419e-06 ( -3.15376e-07 2.86076e-07 ) ergs/cm2
Band function
Multiple GTIs in the spectrum
tstart tstop
0.000000 161.910000
163.000000 603.100000
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.134502 ( 0.124991 0.124991 )
beta : -2.09123 ( 2.0866 0.375722 )
Epeak [keV] : 24.2833 ( -23.5385 301.387 )
Norm@50keV : 6.53667E-03 ( -0.0076327 47.9126 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.93 using 59 PHA bins.
# Reduced chi-squared = 0.9443 for 55 degrees of freedom
# Null hypothesis probability = 5.925025e-01
Photon flux (15-150 keV) in 602 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] : 8.65488 (-1.61152 2.07804)
R^2/D10^2 : 2.94413E-02 (-0.0167122 0.0369212)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.47 using 59 PHA bins.
# Reduced chi-squared = 1.096 for 57 degrees of freedom
# Null hypothesis probability = 2.880357e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.530e-07 7.998e-08
25- 50 5.052e-07 1.439e-07
50-150 1.708e-07 8.837e-08
15-150 9.289e-07 2.552e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 65.0083 (-27.1035 66.5312)
Norm : 0.187591 (-0.0460727 0.0669781)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.22 using 59 PHA bins.
# Reduced chi-squared = 0.9336 for 57 degrees of freedom
# Null hypothesis probability = 6.177292e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.872e-07 6.216e-08
25- 50 4.476e-07 1.000e-07
50-150 5.434e-07 2.955e-07
15-150 1.278e-06 3.350e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.16277 (-1.8404 1.9444)
R1^2/D10^2 : 9.16179E-02 (-0.0592576 0.0930579)
kT2 [keV] : 28.8728 (-21.6049 64.0052)
R2^2/D10^2 : 2.33009E-04 (-0.000221144 0.00110749)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.23 using 59 PHA bins.
# Reduced chi-squared = 0.9315 for 55 degrees of freedom
# Null hypothesis probability = 6.194483e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.077e-07 1.748e-07
25- 50 4.189e-07 1.856e-07
50-150 7.099e-07 4.413e-07
15-150 1.436e-06 7.747e-07
Peak spectrum fit
Power-law model
Time interval is from 163.000 sec. to 603.100 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.00913 ( -0.310388 0.339299 )
Norm@50keV : 2.47638E-04 ( -5.45658e-05 5.23134e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.13 using 59 PHA bins.
# Reduced chi-squared = 0.9146 for 57 degrees of freedom
# Null hypothesis probability = 6.578312e-01
Photon flux (15-150 keV) in 602 sec: 3.73025E-02 ( -0.00603135 0.00603177 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.37546e-06 ( -2.74597e-07 2.8529e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 163.000 sec. to 603.100 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.15068 ( )
Epeak [keV] : 66.4836 ( )
Norm@50keV : 2.06111E-04 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.11 using 59 PHA bins.
# Reduced chi-squared = 0.9306 for 56 degrees of freedom
# Null hypothesis probability = 6.227443e-01
Photon flux (15-150 keV) in 602 sec: 3.72980E-02 ( -0.0060318 0.0060228 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.37419e-06 ( -3.15376e-07 2.86076e-07 ) ergs/cm2
Band function
Time interval is from 163.000 sec. to 603.100 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.134502 ( 0.124991 0.124991 )
beta : -2.09123 ( 2.0866 0.375722 )
Epeak [keV] : 24.2833 ( -23.5385 301.387 )
Norm@50keV : 6.53667E-03 ( -0.0076327 47.9175 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.93 using 59 PHA bins.
# Reduced chi-squared = 0.9443 for 55 degrees of freedom
# Null hypothesis probability = 5.925025e-01
Photon flux (15-150 keV) in 602 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] : 8.65488 (-1.61152 2.07804)
R^2/D10^2 : 2.94413E-02 (-0.0167122 0.0369212)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 62.47 using 59 PHA bins.
# Reduced chi-squared = 1.096 for 57 degrees of freedom
# Null hypothesis probability = 2.880357e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.530e-07 7.390e-08
25- 50 5.052e-07 1.389e-07
50-150 1.708e-07 8.377e-08
15-150 9.289e-07 2.531e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 65.0083 (-27.1035 66.5312)
Norm : 0.187591 (-0.0460727 0.0669781)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.22 using 59 PHA bins.
# Reduced chi-squared = 0.9336 for 57 degrees of freedom
# Null hypothesis probability = 6.177292e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.872e-07 6.514e-08
25- 50 4.476e-07 1.047e-07
50-150 5.434e-07 2.856e-07
15-150 1.278e-06 3.961e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.16277 (-1.8404 1.9444)
R1^2/D10^2 : 9.16179E-02 (-0.0592576 0.0930579)
kT2 [keV] : 28.8728 (-21.6049 64.0052)
R2^2/D10^2 : 2.33009E-04 (-0.000221144 0.00110749)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 51.23 using 59 PHA bins.
# Reduced chi-squared = 0.9315 for 55 degrees of freedom
# Null hypothesis probability = 6.194483e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.077e-07 1.646e-07
25- 50 4.189e-07 2.250e-07
50-150 7.099e-07 4.166e-07
15-150 1.436e-06 7.100e-07
Plot creation:
Sat Jul 25 00:02:23 EDT 2015