batgrbproduct Analysis for Trigger=530689
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 Aug 12 08:04:16 EDT 2012
Host Name: gcn5
Current Working Dir: /local/data/raid16/prebascript_archive/trigger530689/batgroup_hand_proc
======================================================================
Trigger: 00530689 Segment: 000
BAT Trigger Time: 366392101.696 [s; MET]
Trigger Stop: 366392102.72 [s; MET]
UTC: 2012-08-11T15:34:52.170040 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 199.709572292913 Dec: 62.2913515948821 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 12.6
Image Trigger?: NO
Rate S/N Ratio: 22.8910462845192 [ if not an image trigger ]
Image S/N Ratio: 12.6
Flight Position: [ source = BAT ]
RA: 199.709572292913 Dec: 62.2913515948821 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 199.689559985242 Dec: 62.2972991698307 [deg; J2000]
{ 13h 18m 45.5s , +62d 17' 50.3" }
+/- 0.563829094019569 [arcmin] (estimated 90% radius based on SNR)
+/- 0.165578391778018 [arcmin] (formal 1-sigma fit error)
SNR: 68.9639259825323
Angular difference between Flight and Ground position is 0.662569 arcmin
Partial Coding Fraction: 0.890625 [ including projection effects ]
Duration
T90: 26.8240000009537 +/- 3.69357928575403
Measured from: -4.00400000810623
to: 22.8199999928474 [s; relative to TRIGTIME]
T50: 7.25199997425079 +/- 0.526573844103769
Measured from: 2.62000000476837
to: 9.87199997901917 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 5.26800000667572
to: 6.26800000667572 [s; relative to TRIGTIME]
Total Fluence
Measured from: -9.67599999904633
to: 42.8840000033379 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 2.077471 2.219475 1.076553 0.140775
0.042030 0.043051 0.039716 0.039950 [error]
Peak 0.165016 0.193788 0.107663 0.015338
0.007565 0.007975 0.006925 0.005819 [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 6.79e-07 8.99e-07 8.74e-07 1.52e-06 2.95e-06 3.97e-06 erg/cm2
Error 3.55e-08 2.67e-08 4.13e-08 1.55e-07 9.23e-08 1.86e-07 erg/cm2
Peak flux Power-law 1.67e+00 1.37e+00 7.59e-01 6.20e-01 4.08e+00 4.42e+00 ph/cm2/s
Error 1.38e-01 7.11e-02 5.84e-02 9.44e-02 2.14e-01 2.26e-01 ph/cm2/s
Fluence Cutoff-PL 6.09e-07 9.41e-07 8.64e-07 6.07e-07 3.02e-06 0.00e+00 erg/cm2
Error 4.60e-08 3.26e-08 4.55e-08 2.33e-07 2.72e-07 0.00e+00 erg/cm2
Peak flux Cutoff-PL 1.47e+00 1.48e+00 7.75e-01 2.48e-01 3.90e+00 3.97e+00 ph/cm2/s
Error 1.68e-01 9.04e-02 6.54e-02 1.16e-01 2.30e-01 2.63e-01 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 2.041 0.062 - - 6.08e-03 2.01e-04 74.530 57
CPL 1.401 0.303 42.9 5.7 1.31e-02 4.89e-03 59.530 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 1.850 0.096 - - 2.90e-02 1.68e-03 68.070 57
CPL 1.015 0.458 53.9 9.8 8.11e-02 4.89e-02 56.420 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: 17.024000 sec.
T50 in the 50-300 keV band: 5.888000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 52.560 -9.676 42.884
T90 26.824 -4.004 22.820
T50 7.252 2.620 9.872
Peak 1.000 5.268 6.268
Image
Pre-slew 15.0-350.0 keV image (Event data)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
199.6896 62.2973 0.0028 21.2370 159.5769 4.6498319 68.964 TRIG_00530689
Foreground time interval of the image:
-9.676 12.205 (delta_t = 21.881 [sec])
Background time interval of the image:
-427.295 -408.540 (delta_t = 18.755 [sec])
-239.696 -9.676 (delta_t = 230.020 [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 -9.676 sec. to 42.884 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.04108 ( -0.0619958 0.0627068 )
Norm@50keV : 6.07676E-03 ( -0.000201691 0.000200638 )
------------------------------------------------------------
# Chi-Squared = 74.53 using 59 PHA bins.
# Reduced chi-squared = 1.308 for 57 degrees of freedom
# Null hypothesis probability = 5.940495e-02
Photon flux (15-150 keV) in 52.56 sec: 0.929166 ( -0.029883 0.0300235 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.9529e-06 ( -9.21025e-08 9.2431e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from -9.676 sec. to 42.884 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.40084 ( -0.314064 0.292404 )
Epeak [keV] : 42.9261 ( -6.23283 5.26368 )
Norm@50keV : 1.31175E-02 ( -0.0038304 0.00595323 )
------------------------------------------------------------
# Chi-Squared = 59.53 using 59 PHA bins.
# Reduced chi-squared = 1.063 for 56 degrees of freedom
# Null hypothesis probability = 3.486024e-01
Photon flux (15-150 keV) in 52.56 sec: 0.879809 ( -0.03618 0.036425 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.02043e-06 ( -2.29682e-07 3.15297e-07 ) ergs/cm2
Band function
Time interval is from -9.676 sec. to 42.884 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -1.19624 ( -0.388465 0.549638 )
beta : -2.46990 ( 2.46988 0.245404 )
Epeak [keV] : 41.2949 ( -4.95471 5.0141 )
Norm@50keV : 1.73304E-02 ( -0.00640804 0.019598 )
------------------------------------------------------------
# Chi-Squared = 57.47 using 59 PHA bins.
# Reduced chi-squared = 1.045 for 55 degrees of freedom
# Null hypothesis probability = 3.837461e-01
Photon flux (15-150 keV) in 52.56 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] : 11.2234 ( )
R^2/D10^2 : 0.255841 ( )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 201.73 using 59 PHA bins.
# Reduced chi-squared = 3.5391 for 57 degrees of freedom
# Null hypothesis probability = 4.735245e-18
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.552e-07 1.950e-08
25- 50 1.031e-06 3.101e-08
50-150 7.445e-07 5.545e-08
15-150 2.130e-06 6.544e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 68.4768 (-6.38513 7.45497)
Norm : 4.44145 (-0.244542 0.262879)
------------------------------------------------------------
# Chi-Squared = 59.68 using 59 PHA bins.
# Reduced chi-squared = 1.047 for 57 degrees of freedom
# Null hypothesis probability = 3.784732e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.974e-07 2.838e-08
25- 50 9.449e-07 2.759e-08
50-150 1.194e-06 8.935e-08
15-150 2.736e-06 8.856e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 6.13140 (-1.19835 1.30577)
R1^2/D10^2 : 1.66061 (-0.760395 2.06719)
kT2 [keV] : 17.8017 (-2.59457 4.71566)
R2^2/D10^2 : 3.09641E-02 (-0.0195669 0.0322039)
------------------------------------------------------------
# Chi-Squared = 74.19 using 59 PHA bins.
# Reduced chi-squared = 1.349 for 55 degrees of freedom
# Null hypothesis probability = 4.326534e-02
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 5.531e-07 7.090e-08
25- 50 9.450e-07 9.093e-08
50-150 1.137e-06 1.403e-07
15-150 2.635e-06 2.728e-07
Peak spectrum fit
Power-law model
Time interval is from 5.268 sec. to 6.268 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.85026 ( -0.0947332 0.0967173 )
Norm@50keV : 2.89972E-02 ( -0.001692 0.00167758 )
------------------------------------------------------------
# Chi-Squared = 68.07 using 59 PHA bins.
# Reduced chi-squared = 1.194 for 57 degrees of freedom
# Null hypothesis probability = 1.495619e-01
Photon flux (15-150 keV) in 1 sec: 4.07628 ( -0.213441 0.21369 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.66623e-07 ( -1.55883e-08 1.57107e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 5.268 sec. to 6.268 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.01527 ( -0.480957 0.434564 )
Epeak [keV] : 53.9124 ( -6.84313 12.7828 )
Norm@50keV : 8.11000E-02 ( -0.0331213 0.0646083 )
------------------------------------------------------------
# Chi-Squared = 56.42 using 59 PHA bins.
# Reduced chi-squared = 1.008 for 56 degrees of freedom
# Null hypothesis probability = 4.591386e-01
Photon flux (15-150 keV) in 1 sec: 3.89789 ( -0.22974 0.23055 ) ph/cm2/s
Energy fluence (15-150 keV) : 2.69624e-07 ( -2.9e-08 4.3615e-08 ) ergs/cm2
Band function
Time interval is from 5.268 sec. to 6.268 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.986168 ( -0.456121 0.637982 )
beta : -3.00834 ( 3.03955 0.931195 )
Epeak [keV] : 53.6354 ( -10.9899 12.7608 )
Norm@50keV : 8.39351E-02 ( -0.0245952 0.125191 )
------------------------------------------------------------
# Chi-Squared = 56.32 using 59 PHA bins.
# Reduced chi-squared = 1.024 for 55 degrees of freedom
# Null hypothesis probability = 4.254235e-01
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] : 11.9118 (-0.695784 0.737775)
R^2/D10^2 : 0.991837 (-0.19973 0.249833)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
# Chi-Squared = 106.60 using 59 PHA bins.
# Reduced chi-squared = 1.8703 for 57 degrees of freedom
# Null hypothesis probability = 7.544093e-05
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.975e-08 2.780e-09
25- 50 9.281e-08 5.510e-09
50-150 7.879e-08 9.265e-09
15-150 2.013e-07 1.235e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 90.2847 (-15.095 20.4174)
Norm : 18.3934 (-1.38705 1.5363)
------------------------------------------------------------
# Chi-Squared = 57.57 using 59 PHA bins.
# Reduced chi-squared = 1.010 for 57 degrees of freedom
# Null hypothesis probability = 4.540600e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.800e-08 4.435e-09
25- 50 8.124e-08 4.495e-09
50-150 1.239e-07 3.850e-08
15-150 2.532e-07 3.835e-08
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 5.34819 (-1.35806 1.6799)
R1^2/D10^2 : 10.5344 (-6.23945 23.7802)
kT2 [keV] : 16.7285 (-2.2421 3.79658)
R2^2/D10^2 : 0.222014 (-0.131639 0.191454)
------------------------------------------------------------
# Chi-Squared = 58.47 using 59 PHA bins.
# Reduced chi-squared = 1.063 for 55 degrees of freedom
# Null hypothesis probability = 3.491557e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.600e-08 1.339e-08
25- 50 8.108e-08 1.631e-08
50-150 1.117e-07 2.144e-08
15-150 2.388e-07 5.245e-08
Plot creation:
Sun Aug 12 08:38:08 EDT 2012