batgrbproduct Analysis for Trigger=629693
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): Wed Feb 4 10:12:28 EST 2015
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger629693/GCN5_download_cron
======================================================================
Trigger: 00629693 Segment: 000
BAT Trigger Time: 444701576 [s; MET]
Trigger Stop: 444701640 [s; MET]
UTC: 2015-02-04T00:12:42.860500 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 207.805758727013 Dec: -8.68588100341644 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 7.13
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 7.13
Flight Position: [ source = BAT ]
RA: 207.805758727013 Dec: -8.68588100341644 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 207.792893077609 Dec: -8.73465495278253 [deg; J2000]
{ 13h 51m 10.3s , -08d 44' 04.8" }
+/- 3.82614166741987 [arcmin] (estimated 90% radius based on SNR)
+/- 3.03709607944892 [arcmin] (formal 1-sigma fit error)
SNR: 4.47303812309624
Angular difference between Flight and Ground position is 3.024278 arcmin
Partial Coding Fraction: 0.8828125 [ including projection effects ]
Duration
T90: 64 +/-
Measured from: 0
to: 64 [s; relative to TRIGTIME]
T50: 64 +/-
Measured from: 0
to: 64 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 64 second)
Measured from: 0
to: 64 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 64 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.150292 0.164238 0.057536 -0.002412
0.042839 0.043147 0.036453 0.030707 [error]
Peak 0.150292 0.164238 0.057536 -0.002412
0.042839 0.043147 0.036453 0.030707 [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 4.77e-08 5.95e-08 5.40e-08 8.52e-08 1.91e-07 2.46e-07 erg/cm2
Error 1.82e-08 1.96e-08 3.00e-08 1.04e-07 7.32e-08 1.33e-07 erg/cm2
Peak flux Power-law 2.44e-02 1.68e-02 7.64e-03 4.83e-03 5.12e-02 5.37e-02 ph/cm2/s
Error 9.43e-03 5.43e-03 4.12e-03 5.57e-03 1.60e-02 1.71e-02 ph/cm2/s
Fluence Cutoff-PL 4.56e-08 7.58e-08 3.46e-08 2.49e-09 1.58e-07 1.58e-07 erg/cm2
Error 2.02e-08 2.85e-08 4.03e-08 6.27e-08 7.07e-08 1.05e-07 erg/cm2
Peak flux Cutoff-PL 2.28e-02 2.15e-02 5.31e-03 2.10e-04 4.98e-02 4.98e-02 ph/cm2/s
Error 1.04e-02 7.99e-03 5.77e-03 2.14e-03 1.56e-02 1.57e-02 ph/cm2/s
Fluence Band 5.06e-08 6.92e-08 4.02e-08 3.46e-08 1.76e-07 1.96e-07 erg/cm2
Error 2.08e-08 2.59e-08 -------- -------- -------- -------- erg/cm2
Peak flux Band 2.31e-02 2.08e-02 6.09e-03 3.14e-04 5.04e-02 5.04e-02 ph/cm2/s
Error 1.03e-02 -------- -------- -------- 1.57e-02 -------- ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.140 0.562 - - 3.19e-04 1.35e-04 57.050 57
CPL 0.088 4.480 32.8 0.0 6.66e-03 0.00e+00 54.940 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.140 0.562 - - 3.19e-04 1.35e-04 57.050 57
CPL 0.088 4.480 32.8 0.0 6.66e-03 0.00e+00 54.940 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 64.000 0.000 64.000
T90 64.000 0.000 64.000
T50 64.000 0.000 64.000
Peak 64.000 0.000 64.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
207.7929 -8.7347 0.0428 27.3 -160.0 0.3743 4.5 TRIG_00629693
------------------------------------------
Foreground time interval of the image:
0.000 64.000 (delta_t = 64.000 [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
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.13959 ( -0.51313 0.610772 )
Norm@50keV : 3.19212E-04 ( -0.000135683 0.000134034 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.05 using 59 PHA bins.
# Reduced chi-squared = 1.001 for 57 degrees of freedom
# Null hypothesis probability = 4.731825e-01
Photon flux (15-150 keV) in 64 sec: 5.12224E-02 ( -0.0159785 0.0159917 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.90516e-07 ( -7.02605e-08 7.61766e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 8.83516E-02 ( -6.91126 2.04826 )
Epeak [keV] : 32.7539 ( )
Norm@50keV : 6.66358E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.94 using 59 PHA bins.
# Reduced chi-squared = 0.9810 for 56 degrees of freedom
# Null hypothesis probability = 5.151076e-01
Photon flux (15-150 keV) in 64 sec: 4.97538E-02 ( -0.0154928 0.0157962 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.58298e-07 ( -5.97126e-08 8.15942e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.166120 ( -7.00015 5.43431 )
beta : -10.0000 ( 10 7.10543e-15 )
Epeak [keV] : 32.7930 ( -13.8771 285.985 )
Norm@50keV : 5.92747E-03 ( -0.00592747 13.0414 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.95 using 59 PHA bins.
# Reduced chi-squared = 0.9991 for 55 degrees of freedom
# Null hypothesis probability = 4.765008e-01
Photon flux (15-150 keV) in 64 sec: 5.03509E-02 ( 6.94965 -0.0160182 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.75821e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.12244 (-2.23696 3.20235)
R^2/D10^2 : 5.71423E-02 (-0.0571311 0.14827)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.26 using 59 PHA bins.
# Reduced chi-squared = 0.9695 for 57 degrees of freedom
# Null hypothesis probability = 5.406498e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.411e-08 2.718e-08
25- 50 7.926e-08 4.826e-08
50-150 2.187e-08 1.703e-08
15-150 1.452e-07 9.350e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 45.9922 (-23.5883 77.5729)
Norm : 0.313836 (-0.129823 0.238107)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.54 using 59 PHA bins.
# Reduced chi-squared = 0.9744 for 57 degrees of freedom
# Null hypothesis probability = 5.299159e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.810e-08 2.701e-08
25- 50 6.699e-08 3.983e-08
50-150 5.997e-08 4.636e-08
15-150 1.751e-07 1.090e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.44918 (-6.10494 -6.10494)
R1^2/D10^2 : 0.109662 ( )
kT2 [keV] : 17.1474 (-17.0122 -17.0122)
R2^2/D10^2 : 1.30055E-03 (-0.00141302 0.164346)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.49 using 59 PHA bins.
#Fit statistic : Chi-Squared = 54.46 using 59 PHA bins.
# Reduced chi-squared = 0.9908 for 55 degrees of freedom
# Reduced chi-squared = 0.9901 for 55 degrees of freedom
# Null hypothesis probability = 4.939235e-01
# Null hypothesis probability = 4.953217e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.781e-08 3.203e-08
25- 50 7.238e-08 4.531e-08
50-150 4.793e-08 3.354e-08
15-150 1.681e-07 1.061e-07
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.13959 ( -0.51313 0.610772 )
Norm@50keV : 3.19212E-04 ( -0.000135683 0.000134034 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.05 using 59 PHA bins.
# Reduced chi-squared = 1.001 for 57 degrees of freedom
# Null hypothesis probability = 4.731825e-01
Photon flux (15-150 keV) in 64 sec: 5.12224E-02 ( -0.0159785 0.0159917 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.90516e-07 ( -7.02605e-08 7.61766e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 8.83516E-02 ( -6.91126 2.04826 )
Epeak [keV] : 32.7539 ( )
Norm@50keV : 6.66358E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.94 using 59 PHA bins.
# Reduced chi-squared = 0.9810 for 56 degrees of freedom
# Null hypothesis probability = 5.151076e-01
Photon flux (15-150 keV) in 64 sec: 4.97538E-02 ( -0.0154928 0.0157962 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.58298e-07 ( -5.97126e-08 8.15942e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.166120 ( -7.00015 5.43431 )
beta : -10.0000 ( 10 20 )
Epeak [keV] : 32.7930 ( -13.8771 308.203 )
Norm@50keV : 5.92747E-03 ( -0.00592747 13.0401 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.95 using 59 PHA bins.
# Reduced chi-squared = 0.9991 for 55 degrees of freedom
# Null hypothesis probability = 4.765008e-01
Photon flux (15-150 keV) in 64 sec: 5.03509E-02 ( 6.94965 -0.0160182 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.75821e-07 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 8.12244 (-2.23696 3.20235)
R^2/D10^2 : 5.71423E-02 (-0.0571311 0.14827)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.26 using 59 PHA bins.
# Reduced chi-squared = 0.9695 for 57 degrees of freedom
# Null hypothesis probability = 5.406498e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.411e-08 2.619e-08
25- 50 7.926e-08 4.922e-08
50-150 2.187e-08 1.692e-08
15-150 1.452e-07 9.133e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 45.9922 (-23.5883 77.5729)
Norm : 0.313836 (-0.129823 0.238107)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 55.54 using 59 PHA bins.
# Reduced chi-squared = 0.9744 for 57 degrees of freedom
# Null hypothesis probability = 5.299159e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.810e-08 2.456e-08
25- 50 6.699e-08 4.044e-08
50-150 5.997e-08 4.448e-08
15-150 1.751e-07 1.078e-07
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.44918 (-6.10494 -6.10494)
R1^2/D10^2 : 0.109662 ( )
kT2 [keV] : 17.1474 (-17.0122 -17.0122)
R2^2/D10^2 : 1.30055E-03 (-0.00141302 0.164346)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.49 using 59 PHA bins.
#Fit statistic : Chi-Squared = 54.46 using 59 PHA bins.
# Reduced chi-squared = 0.9908 for 55 degrees of freedom
# Reduced chi-squared = 0.9901 for 55 degrees of freedom
# Null hypothesis probability = 4.939235e-01
# Null hypothesis probability = 4.953217e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.781e-08 3.600e-08
25- 50 7.238e-08 5.789e-08
50-150 4.793e-08 3.622e-08
15-150 1.681e-07 1.188e-07
Plot creation:
Wed Feb 4 10:16:22 EST 2015