batgrbproduct Analysis for Trigger=604111
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): Sat Jul 12 16:35:22 EDT 2014
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger604111/GCN5_download_cron
======================================================================
Trigger: 00604111 Segment: 000
BAT Trigger Time: 426826722.944 [s; MET]
Trigger Stop: 426826723.968 [s; MET]
UTC: 2014-07-12T02:58:30.690320 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 355.566230322999 Dec: -62.7157959789177 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 6.72
Image Trigger?: NO
Rate S/N Ratio: 17.5214154679352 [ if not an image trigger ]
Image S/N Ratio: 6.72
Flight Position: [ source = BAT ]
RA: 355.566230322999 Dec: -62.7157959789177 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 355.679037370579 Dec: -62.7211518308847 [deg; J2000]
{ 23h 42m 43.0s , -62d 43' 16.1" }
+/- 3.88273704230756 [arcmin] (estimated 90% radius based on SNR)
+/- 2.94729719073982 [arcmin] (formal 1-sigma fit error)
SNR: 4.38018744137902
Angular difference between Flight and Ground position is 3.118993 arcmin
Partial Coding Fraction: 0.7421875 [ including projection effects ]
Duration
T90: 1.02399998903275 +/-
Measured from: 0
to: 1.02399998903275 [s; relative to TRIGTIME]
T50: 1.02399998903275 +/-
Measured from: 0
to: 1.02399998903275 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 1.02399998903275 second)
Measured from: -2.98023223876953e-08
to: 1.02399995923042 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 1.02399998903275 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.016788 -0.014334 0.043186 0.061972
0.011249 0.011821 0.012381 0.014797 [error]
Peak 0.016788 -0.014334 0.043186 0.061972
0.011249 0.011821 0.012381 0.014797 [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 2.55e-10 2.24e-09 1.80e-08 8.47e-07 6.88e-08 8.94e-07 erg/cm2
Error 8.49e-10 3.60e-09 1.34e-08 8.45e-07 5.10e-08 8.54e-07 erg/cm2
Peak flux Power-law 7.60e-03 3.51e-02 1.41e-01 2.08e+00 4.16e-01 2.32e+00 ph/cm2/s
Error 2.60e-02 5.87e-02 1.21e-01 1.98e+00 3.29e-01 2.06e+00 ph/cm2/s
Fluence Cutoff-PL 2.08e-11 2.53e-09 1.90e-08 7.79e-07 7.71e-08 8.00e-07 erg/cm2
Error -------- -------- -------- -------- 3.67e-08 -------- erg/cm2
Peak flux Cutoff-PL 6.05e-05 6.75e-03 1.69e-01 4.08e-01 4.42e-01 5.84e-01 ph/cm2/s
Error 1.86e-02 4.86e-02 1.33e-01 -------- 2.02e-01 2.76e+00 ph/cm2/s
Fluence Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 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 -0.957 1.196 - - 1.93e-03 2.30e-03 66.150 57
CPL -9.332 0.000 129.8 2080.8 5.79e-02 0.00e+00 65.210 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL -0.957 1.196 - - 1.93e-03 2.30e-03 66.150 57
CPL -9.332 0.000 129.8 498.8 5.79e-02 0.00e+00 65.210 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: 0.832000 sec.
T50 in the 50-300 keV band: 0.576000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 1.024 0.000 1.024
T90 1.024 0.000 1.024
T50 1.024 0.000 1.024
Peak 1.024 -0.000 1.024
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
355.6790 -62.7212 0.0437 30.0 170.8 0.1109 4.4 TRIG_00604111
------------------------------------------
Foreground time interval of the image:
0.000 1.024 (delta_t = 1.024 [sec])
Background time interval of the image:
-60.944 -21.524 (delta_t = 39.420 [sec])
-19.944 -10.944 (delta_t = 9.000 [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 0.000 sec. to 1.024 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.956797 ( -1.09737 1.29493 )
Norm@50keV : 1.92801E-03 ( -0.00189214 0.00271576 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.15 using 59 PHA bins.
# Reduced chi-squared = 1.161 for 57 degrees of freedom
# Null hypothesis probability = 1.902898e-01
Photon flux (15-150 keV) in 1.024 sec: 0.416134 ( -0.413407 0.245588 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.87945e-08 ( -6.85592e-08 3.34464e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.33230 ( )
Epeak [keV] : 129.802 ( -165.64 3995.96 )
Norm@50keV : 5.79134E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.21 using 59 PHA bins.
# Reduced chi-squared = 1.164 for 56 degrees of freedom
# Null hypothesis probability = 1.871192e-01
Photon flux (15-150 keV) in 1.024 sec: 0.441661 ( -0.200195 0.204319 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.7148e-08 ( -3.7194e-08 3.6171e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.100354 ( -0.0734417 -0.0734417 )
beta : 1.01931 ( -1.26781 1.12238 )
Epeak [keV] : 15.2782 ( -15.4396 -15.4396 )
Norm@50keV : 3.59755E-03 ( -0.00360604 851.378 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.15 using 59 PHA bins.
# Reduced chi-squared = 1.203 for 55 degrees of freedom
# Null hypothesis probability = 1.442838e-01
Photon flux (15-150 keV) in 1.024 sec: 0.0 ( ) 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] : 198.706 ( )
R^2/D10^2 : 2.42166E-04 (-0.000118816 0.00367904)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.15 using 59 PHA bins.
# Reduced chi-squared = 1.161 for 57 degrees of freedom
# Null hypothesis probability = 1.902351e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.132e-09 2.992e-09
25- 50 6.874e-10 5.565e-10
50-150 1.504e-12 2.029e-12
15-150 4.821e-09 3.210e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.354 ( )
Norm : 0.984507 (-1.21343 1.18266)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.59 using 59 PHA bins.
# Reduced chi-squared = 1.326 for 57 degrees of freedom
# Null hypothesis probability = 5.024974e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.639e-09 1.981e-09
25- 50 7.266e-10 4.917e-10
50-150 1.018e-11 1.192e-11
15-150 4.376e-09 3.713e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.93010 (-2.92672 2.44603)
R1^2/D10^2 : 21.6411 (-21.8096 1363.61)
kT2 [keV] : 199.363 (-199.363 -199.363)
R2^2/D10^2 : 2.46171E-04 (-0.000117112 0.00314204)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.95 using 59 PHA bins.
# Reduced chi-squared = 1.181 for 55 degrees of freedom
# Null hypothesis probability = 1.686629e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.896e-09 2.111e-09
25- 50 3.221e-09 1.367e-09
50-150 6.675e-08 3.054e-08
15-150 7.386e-08 3.053e-08
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.956797 ( -1.09737 1.29493 )
Norm@50keV : 1.92801E-03 ( -0.00189214 0.00271576 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.15 using 59 PHA bins.
# Reduced chi-squared = 1.161 for 57 degrees of freedom
# Null hypothesis probability = 1.902898e-01
Photon flux (15-150 keV) in 1.024 sec: 0.416134 ( -0.413407 0.245588 ) ph/cm2/s
Energy fluence (15-150 keV) : 6.87945e-08 ( -6.85592e-08 3.34464e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.33230 ( )
Epeak [keV] : 129.802 ( -165.64 831.971 )
Norm@50keV : 5.79134E-02 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 65.21 using 59 PHA bins.
# Reduced chi-squared = 1.164 for 56 degrees of freedom
# Null hypothesis probability = 1.871192e-01
Photon flux (15-150 keV) in 1.024 sec: 0.441661 ( -0.200195 0.204319 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.7148e-08 ( -3.7194e-08 3.6171e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 1.024 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 0.100354 ( -0.0734417 -0.0734417 )
beta : 1.01931 ( -1.26781 1.12238 )
Epeak [keV] : 15.2782 ( -15.4396 -15.4396 )
Norm@50keV : 3.59755E-03 ( -0.00360604 851.374 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.15 using 59 PHA bins.
# Reduced chi-squared = 1.203 for 55 degrees of freedom
# Null hypothesis probability = 1.442838e-01
Photon flux (15-150 keV) in 1.024 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] : 198.706 ( )
R^2/D10^2 : 2.42166E-04 (-0.000118816 0.00367904)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 66.15 using 59 PHA bins.
# Reduced chi-squared = 1.161 for 57 degrees of freedom
# Null hypothesis probability = 1.902351e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.132e-09 3.207e-09
25- 50 6.874e-10 5.095e-10
50-150 1.504e-12 3.551e-12
15-150 4.821e-09 2.520e-09
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 199.354 ( )
Norm : 0.984507 (-1.21343 1.18266)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 75.59 using 59 PHA bins.
# Reduced chi-squared = 1.326 for 57 degrees of freedom
# Null hypothesis probability = 5.024974e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.639e-09 2.617e-09
25- 50 7.266e-10 6.477e-10
50-150 1.018e-11 1.521e-11
15-150 4.376e-09 3.866e-09
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.93010 (-2.92672 2.44603)
R1^2/D10^2 : 21.6411 (-21.8096 1363.61)
kT2 [keV] : 199.363 (-199.363 -199.363)
R2^2/D10^2 : 2.46171E-04 (-0.000117112 0.00314204)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 64.95 using 59 PHA bins.
# Reduced chi-squared = 1.181 for 55 degrees of freedom
# Null hypothesis probability = 1.686629e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.896e-09 2.493e-09
25- 50 3.221e-09 1.267e-09
50-150 6.675e-08 2.507e-08
15-150 7.386e-08 2.538e-08
Plot creation:
Sat Jul 12 16:38:11 EDT 2014