batgrbproduct Analysis for Trigger=611933

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Sep  8 10:28:01 EDT 2014
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger611933/batgroup_hand_proc
======================================================================

  Trigger: 00611933      Segment: 000

  BAT Trigger Time: 431798841.344   [s; MET]
      Trigger Stop: 431798842.368   [s; MET]
               UTC: 2014-09-07T16:07:08.847220    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 48.1471898036904   Dec: 46.5950777481444  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.32
     Image Trigger?:     NO
     Rate S/N Ratio:     8.66025403784439  [ if not an image trigger ]
     Image S/N Ratio:    7.32

  Flight Position:   [ source = BAT ]
    RA: 48.1471898036904   Dec: 46.5950777481444  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 48.1291161124197   Dec: 46.598902762319  [deg; J2000]  
        { 03h 12m 31.0s , +46d 35' 56.0" }
         +/- 1.26157661292084 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.325009279759307 [arcmin] (formal 1-sigma fit error)
    SNR: 21.825090448075
 
  Angular difference between Flight and Ground position is 0.779676 arcmin
 
  Partial Coding Fraction: 0.65625    [ including projection effects ]

  Duration
     T90: 79.1679999828339 +/- 31.4224358140569
        Measured from: -49.5199999809265
                   to: 29.6480000019073     [s; relative to TRIGTIME]
     T50: 15.3600000143051 +/- 1.24265521049403
        Measured from: 3.66400003433228
                   to: 19.0240000486374     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 17.4679999947548     
                   to: 18.4679999947548     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -91.2479999661446     
                   to: 39.8880000114441     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.158580   2.634263   1.843412   0.402831
           0.080043   0.081046   0.071538   0.061258 [error]
 Peak      0.061207   0.118609   0.093184   0.032312
           0.007970   0.008604   0.007911   0.006046 [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 7.34e-07 1.18e-06 1.44e-06 3.44e-06 4.34e-06 6.79e-06   erg/cm2
              Error 4.89e-08 4.66e-08 7.26e-08 3.77e-07 1.72e-07 4.29e-07   erg/cm2
Peak flux Power-law 7.65e-01 8.16e-01 6.17e-01 7.60e-01 2.49e+00 2.96e+00   ph/cm2/s
              Error 1.13e-01 7.57e-02 6.25e-02 1.56e-01 2.15e-01 2.54e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.79e-07 1.22e-06 1.47e-06 1.97e-06 4.21e-06 5.34e-06   erg/cm2
              Error 6.11e-08 5.50e-08 7.87e-08 7.63e-07 1.96e-07 7.82e-07   erg/cm2
Peak flux Cutoff-PL 6.94e-01 8.58e-01 6.51e-01 4.40e-01 2.44e+00 2.64e+00   ph/cm2/s
              Error 1.32e-01 8.92e-02 7.28e-02 2.56e-01 2.19e-01 3.32e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band -------- -------- -------- -------- -------- 2.67e+00   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    1.717    0.069    -      -           3.58e-03 1.37e-04   38.240 57
CPL   1.313    0.296      85.9   49.4      5.66e-03 1.93e-03   32.320 56
 
The chi2 of BB fit is Chi-Squared Chi-Squared which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.402    0.139    -      -           2.04e-02 1.73e-03   65.850 57
CPL   0.877    0.561     110.2  462.4      3.72e-02 2.60e-02   62.910 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: 23.616000 sec.
T50 in the 50-300 keV band: 10.560000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  131.136  -91.248   39.888
T90    79.168  -49.520   29.648
T50    15.360    3.664   19.024
Peak    1.000   17.468   18.468

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
   48.1291    46.5989   0.0088    36.8965  -161.2675         3.7980561     21.825 TRIG_00611933                 
 
Foreground time interval of the image:
-91.248  12.757 (delta_t = 104.005 [sec])
Background time interval of the image:
-239.344 -91.248 (delta_t = 148.096 [sec])

Lightcurves

Notes:

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:

Time averaged spectrum fit using the pre-slew DRM

Power-law model
Time interval is from  -91.248 sec. to   39.888 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.71684     ( -0.0688487   0.0693417 )
Norm@50keV  : 3.57622E-03    ( -0.000136949   0.000136642 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.24 using 59 PHA bins.
# Reduced chi-squared =         0.6709 for     57 degrees of freedom 
# Null hypothesis probability =   9.734031e-01
 
Photon flux (15-150 keV)    in 131.1 sec: 0.477791 ( -0.0190523  0.0191065 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.33544e-06 ( -1.72214e-07  1.72678e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -91.248 sec. to   39.888 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.31321     ( -0.30668   0.286262 )
Epeak [keV] : 85.9456      ( -17.6208 81.2185 )
Norm@50keV  : 5.66273E-03    ( -0.0015428   0.00231081 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          32.32 using 59 PHA bins.
# Reduced chi-squared =         0.5772 for     56 degrees of freedom 
# Null hypothesis probability =   9.953254e-01
 
Photon flux (15-150 keV)    in 131.1 sec: 0.465169 ( -0.020812  0.020923 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.20518e-06 ( -1.96532e-07  1.95955e-07 ) ergs/cm2
 
Band function
Time interval is from  -91.248 sec. to   39.888 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.14078   ( -0.412338   0.900593 )
beta        : -1.98144    ( 1.98104   0.218641 )
Epeak [keV] : 69.1034      ( -28.551 66.79 )
Norm@50keV   : 7.13151E-03    ( -0.0027929   0.0211624 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          31.48 using 59 PHA bins.
# Reduced chi-squared =         0.5724 for     55 degrees of freedom 
# Null hypothesis probability =   9.954873e-01
 
Photon flux (15-150 keV)    in 131.1 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]    : 13.8821  (  )
R^2/D10^2   : 6.64566E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         165.35 using 59 PHA bins.
# Reduced chi-squared =         2.9008 for     57 degrees of freedom 
# Null hypothesis probability =   1.722738e-12
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.549e-07   2.674e-08
25- 50  1.309e-06   6.024e-08
50-150  1.654e-06   1.134e-07
15-150  3.318e-06   1.265e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 136.576       (-22.7037      25.4698)
Norm        : 1.96383       (-0.0922914     0.113519)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          32.36 using 59 PHA bins.
# Reduced chi-squared =         0.5677 for     57 degrees of freedom 
# Null hypothesis probability =   9.965026e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.660e-07   4.556e-08
25- 50  1.217e-06   7.460e-08
50-150  2.308e-06   5.650e-07
15-150  4.191e-06   6.666e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.12975        (-1.19074      1.25959)
R1^2/D10^2  : 0.478970        (-0.19228      0.418945)
kT2 [keV]   : 23.8167        (-3.4908      5.59578)
R2^2/D10^2  : 6.89588E-03    (-0.00382241   0.00621062)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.98 using 59 PHA bins.
# Reduced chi-squared =         0.7450 for     55 degrees of freedom 
# Null hypothesis probability =   9.201657e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.138e-07   8.731e-08
25- 50  1.246e-06   1.221e-07
50-150  2.268e-06   3.599e-07
15-150  4.128e-06   4.615e-07

Peak spectrum fit

Power-law model
Time interval is from   17.468 sec. to   18.468 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.40225     ( -0.13901   0.139194 )
Norm@50keV  : 2.04100E-02    ( -0.00172908   0.0017269 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.85 using 59 PHA bins.
# Reduced chi-squared =          1.155 for     57 degrees of freedom 
# Null hypothesis probability =   1.972377e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.48682 ( -0.214894  0.215201 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.97125e-07 ( -1.82003e-08  1.82962e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   17.468 sec. to   18.468 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.877362     ( -0.598464   0.524158 )
Epeak [keV] : 110.203      ( -35.0136 889.747 )
Norm@50keV  : 3.72407E-02    ( -0.0164392   0.035461 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.91 using 59 PHA bins.
# Reduced chi-squared =          1.123 for     56 degrees of freedom 
# Null hypothesis probability =   2.450980e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.44363 ( -0.21918  0.21936 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.91356e-07 ( -1.9567e-08  1.9431e-08 ) ergs/cm2
 
Band function
Time interval is from   17.468 sec. to   18.468 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.880589   ( -0.31999   0.529002 )
beta        : -9.37167    ( 9.37164   19.3716 )
Epeak [keV] : 111.557      ( -59.0146 391.378 )
Norm@50keV   : 3.69233E-02    ( -0.0116339   0.0134664 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.91 using 59 PHA bins.
# Reduced chi-squared =          1.144 for     55 degrees of freedom 
# Null hypothesis probability =   2.166302e-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]    : 15.9104  (-1.68001  1.92765)
R^2/D10^2   : 0.238617  (-0.0783764   0.113642)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          91.04 using 59 PHA bins.
# Reduced chi-squared =          1.597 for     57 degrees of freedom 
# Null hypothesis probability =   2.796701e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.251e-08   2.171e-09
25- 50  5.237e-08   5.735e-09
50-150  9.246e-08   1.574e-08
15-150  1.573e-07   1.690e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 10.3328       (-0.868704     0.868661)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.80 using 59 PHA bins.
# Reduced chi-squared =          1.172 for     57 degrees of freedom 
# Null hypothesis probability =   1.757678e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.573e-08   2.720e-09
25- 50  4.949e-08   8.585e-09
50-150  1.086e-07   4.166e-08
15-150  1.838e-07   5.421e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.11181        (-1.6219      1.9435)
R1^2/D10^2  : 1.55101        (-0.757098      1.63869)
kT2 [keV]   : 30.0984        (-6.78077      13.4603)
R2^2/D10^2  : 2.03020E-02    (-0.0142801   0.0261437)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.45 using 59 PHA bins.
# Reduced chi-squared =          1.063 for     55 degrees of freedom 
# Null hypothesis probability =   3.497347e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.151e-08   8.151e-09
25- 50  5.116e-08   1.519e-08
50-150  1.225e-07   5.803e-08
15-150  1.952e-07   7.600e-08
Plot creation:
Mon Sep  8 11:20:23 EDT 2014