batgrbproduct Analysis for Trigger=544784
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 Jan 6 20:34:35 EST 2013
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger544784/batgroup_hand_proc
======================================================================
Trigger: 00544784 Segment: 000
BAT Trigger Time: 378843064 [s; MET]
Trigger Stop: 378843128 [s; MET]
UTC: 2013-01-02T18:10:53.944400 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 311.464423090679 Dec: 49.835123133839 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 9.9
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 9.9
Flight Position: [ source = BAT ]
RA: 311.464423090679 Dec: 49.835123133839 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 311.425311276435 Dec: 49.8324227717853 [deg; J2000]
{ 20h 45m 42.1s , +49d 49' 56.7" }
+/- 2.27422074955492 [arcmin] (estimated 90% radius based on SNR)
+/- 1.15531213135714 [arcmin] (formal 1-sigma fit error)
SNR: 9.40497179909723
Angular difference between Flight and Ground position is 1.522291 arcmin
Partial Coding Fraction: 0.9921875 [ including projection effects ]
Duration
T90: 153.603999912739 +/- 18.1787516820219
Measured from: 17.9200000166893
to: 171.523999929428 [s; relative to TRIGTIME]
T50: 69.5119999647141 +/- 39.2268316975094
Measured from: 28.1679999828339
to: 97.6799999475479 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 23.5320000052452
to: 24.5320000052452 [s; relative to TRIGTIME]
Total Fluence
Measured from: 15.3759999871254
to: 184.079999983311 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.413916 0.536093 0.388438 0.024402
0.063000 0.061977 0.054748 0.048193 [error]
Peak 0.015092 0.022459 0.008813 0.005948
0.004853 0.004793 0.004382 0.003728 [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 1.19e-07 2.04e-07 2.68e-07 7.14e-07 7.85e-07 1.30e-06 erg/cm2
Error 2.45e-08 2.72e-08 5.14e-08 2.83e-07 1.22e-07 3.30e-07 erg/cm2
Peak flux Power-law 1.49e-01 1.34e-01 8.36e-02 7.92e-02 4.00e-01 4.46e-01 ph/cm2/s
Error 5.87e-02 3.66e-02 3.36e-02 6.25e-02 1.09e-01 1.26e-01 ph/cm2/s
Fluence Cutoff-PL 9.51e-08 2.30e-07 2.86e-07 7.25e-07 0.00e+00 0.00e+00 erg/cm2
Error 3.12e-08 3.51e-08 5.99e-08 1.26e-07 0.00e+00 0.00e+00 erg/cm2
Peak flux Cutoff-PL 1.25e-01 1.65e-01 7.56e-02 8.63e-03 3.73e-01 3.74e-01 ph/cm2/s
Error 6.94e-02 5.71e-02 6.01e-02 4.98e-02 1.13e-01 9.49e-02 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 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 erg/cm2
Peak flux Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 ph/cm2/s
Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.608 0.232 - - 4.98e-04 7.15e-05 0.000 57
CPL 0.330 1.198 64.9 39.3 2.19e-03 4.94e-03 0.000 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.685 0.477 - - 3.03e-03 9.49e-04 0.000 57
CPL -0.233 3.693 47.2 -16.3 3.96e-02 2.20e+01 0.000 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: 27.776000 sec.
T50 in the 50-300 keV band: 9.344000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 168.704 15.376 184.080
T90 153.604 17.920 171.524
T50 69.512 28.168 97.680
Peak 1.000 23.532 24.532
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
311.4253 49.8324 0.0203 9.9897 -74.3881 0.8315537 9.405 TRIG_00544784
Foreground time interval of the image:
15.376 73.501 (delta_t = 58.125 [sec])
Background time interval of the image:
-79.499 15.376 (delta_t = 94.875 [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 15.376 sec. to 184.080 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.60808 ( -0.226665 0.236569 )
Norm@50keV : 4.97771E-04 ( -7.21053e-05 7.09602e-05 )
------------------------------------------------------------
#Test statistic : Chi-Squared = 67.45 using 59 PHA bins.
# Reduced chi-squared = 1.183 for 57 degrees of freedom
# Null hypothesis probability = 1.620939e-01
Photon flux (15-150 keV) in 168.7 sec: 6.41270E-02 ( -0.00850307 0.00850882 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.84578e-07 ( -1.21195e-07 1.2373e-07 ) ergs/cm2
Cutoff power-law model
Time interval is from 15.376 sec. to 184.080 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 0.330178 ( -1.35617 1.04034 )
Epeak [keV] : 64.8621 ( -13.5585 64.9757 )
Norm@50keV : 2.18951E-03 ( -0.00218877 0.00769472 )
------------------------------------------------------------
#Test statistic : Chi-Squared = 62.87 using 59 PHA bins.
# Reduced chi-squared = 1.123 for 56 degrees of freedom
# Null hypothesis probability = 2.460369e-01
Photon flux (15-150 keV) in 168.7 sec: 6.05810E-02 ( -0.009043 0.0089931 ) ph/cm2/s
Energy fluence (15-150 keV) : 7.24536e-07 ( -1.22405e-07 1.30042e-07 ) ergs/cm2
Band function
Time interval is from 15.376 sec. to 184.080 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.336885 ( -1.07873 1.28481 )
beta : -10.0000 ( 10 1.77636e-15 )
Epeak [keV] : 65.1213 ( -13.838 64.7713 )
Norm@50keV : 2.16577E-03 ( -0.00216581 0.00772812 )
------------------------------------------------------------
#Test statistic : Chi-Squared = 62.87 using 59 PHA bins.
# Reduced chi-squared = 1.143 for 55 degrees of freedom
# Null hypothesis probability = 2.175457e-01
Photon flux (15-150 keV) in 168.7 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] : 14.5900 (-1.95571 2.27625)
R^2/D10^2 : 8.20127E-03 (-0.00329799 0.00541039)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Test statistic : Chi-Squared = 66.93 using 59 PHA bins.
# Reduced chi-squared = 1.174 for 57 degrees of freedom
# Null hypothesis probability = 1.729077e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 6.192e-08 1.540e-08
25- 50 2.397e-07 4.378e-08
50-150 3.429e-07 8.815e-08
15-150 6.445e-07 1.172e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 162.775 (-72.5805 -161.077)
Norm : 0.264545 (-0.0362621 0.0453867)
------------------------------------------------------------
#Test statistic : Chi-Squared = 65.14 using 59 PHA bins.
# Reduced chi-squared = 1.143 for 57 degrees of freedom
# Null hypothesis probability = 2.144594e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.138e-07 6.316e-08
25- 50 2.133e-07 1.145e-07
50-150 4.351e-07 2.511e-07
15-150 7.621e-07 4.244e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.26130 (-1.06589 1.68676)
R1^2/D10^2 : 12.8143 (-12.3381 3980.71)
kT2 [keV] : 16.1307 (-2.30154 2.92372)
R2^2/D10^2 : 5.46296E-03 (-0.00248401 0.00429086)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 56.06 using 59 PHA bins.
#Test statistic : Chi-Squared = 56.06 using 59 PHA bins.
# Reduced chi-squared = 1.019 for 55 degrees of freedom
# Null hypothesis probability = 4.349558e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 1.049e-07 4.175e-08
25- 50 2.124e-07 5.810e-08
50-150 3.826e-07 1.215e-07
15-150 6.998e-07 1.560e-07
Peak spectrum fit
Power-law model
Time interval is from 23.532 sec. to 24.532 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.68513 ( -0.45568 0.498803 )
Norm@50keV : 3.02973E-03 ( -0.000966985 0.000931519 )
------------------------------------------------------------
#Test statistic : Chi-Squared = 76.00 using 59 PHA bins.
# Reduced chi-squared = 1.333 for 57 degrees of freedom
# Null hypothesis probability = 4.708530e-02
Photon flux (15-150 keV) in 1 sec: 0.400314 ( -0.10863 0.108632 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.80869e-08 ( -9.05294e-09 9.58368e-09 ) ergs/cm2
Cutoff power-law model
Time interval is from 23.532 sec. to 24.532 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -0.232544 ( -5.00201 2.38433 )
Epeak [keV] : 47.1995 ( -14.342 -46.9345 )
Norm@50keV : 3.95512E-02 ( -0.0425893 43.9251 )
------------------------------------------------------------
#Test statistic : Chi-Squared = 74.48 using 59 PHA bins.
# Reduced chi-squared = 1.330 for 56 degrees of freedom
# Null hypothesis probability = 4.992102e-02
Photon flux (15-150 keV) in 1 sec: 0.373287 ( -0.111133 0.115176 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.30394e-08 ( -8.451e-09 3.89001e-08 ) ergs/cm2
Band function
Time interval is from 23.532 sec. to 24.532 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 2.31481 ( -4.23977 -2.31493 )
beta : -2.37984 ( 2.37982 0.938571 )
Epeak [keV] : 36.3754 ( -36.376 118.071 )
Norm@50keV : 1.08486 ( -1.08546 43.25 )
------------------------------------------------------------
#Test statistic : Chi-Squared = 74.06 using 59 PHA bins.
# Reduced chi-squared = 1.347 for 55 degrees of freedom
# Null hypothesis probability = 4.420014e-02
Photon flux (15-150 keV) in 1 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] : 11.1287 (-2.73395 3.83731)
R^2/D10^2 : 0.134859 (-0.0898358 0.241843)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Test statistic : Chi-Squared = 74.80 using 59 PHA bins.
# Reduced chi-squared = 1.312 for 57 degrees of freedom
# Null hypothesis probability = 5.700165e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.497e-09 2.139e-09
25- 50 1.004e-08 5.965e-09
50-150 7.085e-09 4.705e-09
15-150 2.062e-08 1.281e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 115.022 (-69.2491 -112.887)
Norm : 1.72141 (-0.513416 0.803469)
------------------------------------------------------------
#Test statistic : Chi-Squared = 75.28 using 59 PHA bins.
# Reduced chi-squared = 1.321 for 57 degrees of freedom
# Null hypothesis probability = 5.280181e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.490e-09 2.693e-09
25- 50 7.974e-09 4.651e-09
50-150 1.393e-08 1.012e-08
15-150 2.639e-08 1.636e-08
Double BB
kT1 [keV] : 9.82490 (-9.35029 4.87499)
R1^2/D10^2 : 0.191672 ( )
kT2 [keV] : 55.8397 (-57.7947 -57.7947)
R2^2/D10^2 : 2.48063E-04 (-0.000221702 0.313854)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 74.01 using 59 PHA bins.
#Test statistic : Chi-Squared = 74.01 using 59 PHA bins.
#Fit statistic : Chi-Squared = 73.93 using 59 PHA bins.
#Test statistic : Chi-Squared = 73.93 using 59 PHA bins.
# Reduced chi-squared = 1.346 for 55 degrees of freedom
# Reduced chi-squared = 1.344 for 55 degrees of freedom
# Null hypothesis probability = 4.460303e-02
# Null hypothesis probability = 4.520151e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.913e-09 2.522e-09
25- 50 9.524e-09 6.545e-09
50-150 1.209e-08 7.505e-09
15-150 2.553e-08 1.464e-08
Plot creation:
Mon Jan 7 03:24:31 EST 2013