batgrbproduct Analysis for Trigger=621915

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Dec 21 01:28:24 EST 2014
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger621915/GCN5_download_cron
======================================================================

  Trigger: 00621915      Segment: 000

  BAT Trigger Time: 440748185.6   [s; MET]
      Trigger Stop: 440748186.624   [s; MET]
               UTC: 2014-12-20T06:02:52.659420    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 195.049884054191   Dec: 32.1436131040692  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    15.59
     Image Trigger?:     NO
     Rate S/N Ratio:     48.2078831727758  [ if not an image trigger ]
     Image S/N Ratio:    15.59

  Flight Position:   [ source = BAT ]
    RA: 195.049884054191   Dec: 32.1436131040692  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 195.057486936089   Dec: 32.1464859258063  [deg; J2000]  
        { 13h 00m 13.8s , +32d 08' 47.3" }
         +/- 1.1274257302194 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.360288982128627 [arcmin] (formal 1-sigma fit error)
    SNR: 25.6275467312891
 
  Angular difference between Flight and Ground position is 0.422960 arcmin
 
  Partial Coding Fraction: 0.1972656    [ including projection effects ]

  Duration
     T90: 7.21599996089935 +/- 0.473776347689343
        Measured from: -0.419999897480011
                   to: 6.79600006341934     [s; relative to TRIGTIME]
     T50: 3.05999994277954 +/- 0.951100420580729
        Measured from: 0.372000098228455
                   to: 3.432000041008     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.120000004768372     
                   to: 0.879999995231628     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.90800005197525     
                   to: 7.2960000038147     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.658881   1.196118   1.274317   0.423200
           0.052683   0.059592   0.055790   0.041659 [error]
 Peak      0.143587   0.349093   0.448024   0.175924
           0.020687   0.026727   0.027403   0.019456 [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 2.79e-07 5.80e-07 9.45e-07 3.46e-06 2.61e-06 5.26e-06   erg/cm2
              Error 2.73e-08 3.49e-08 5.25e-08 4.18e-07 1.35e-07 4.46e-07   erg/cm2
Peak flux Power-law 2.07e+00 2.71e+00 2.61e+00 4.47e+00 8.87e+00 1.19e+01   ph/cm2/s
              Error 3.13e-01 2.61e-01 2.05e-01 7.07e-01 7.10e-01 9.25e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.36e-07 6.08e-07 1.02e-06 1.67e-06 2.57e-06 3.53e-06   erg/cm2
              Error 3.42e-08 3.97e-08 6.77e-08 6.14e-07 1.40e-07 6.09e-07   erg/cm2
Peak flux Cutoff-PL 1.68e+00 2.84e+00 2.91e+00 2.39e+00 8.73e+00 9.83e+00   ph/cm2/s
              Error 3.83e-01 2.95e-01 2.86e-01 9.79e-01 7.16e-01 1.18e+00   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   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    1.297    0.083    -      -           3.22e-02 1.63e-03   67.990 57
CPL   0.615    0.381     117.4   45.0      6.48e-02 2.55e-02   57.140 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.056    0.120    -      -           7.68e-02 5.94e-03   84.750 57
CPL   0.266    0.560     129.6   82.1      1.71e-01 1.01e-01   77.800 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: 7.488000 sec.
T50 in the 50-300 keV band: 2.944000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    8.204   -0.908    7.296
T90     7.216   -0.420    6.796
T50     3.060    0.372    3.432
Peak    1.000   -0.120    0.880

Image

Pre-slew 15-350 keV image (Event data; bkg subtracted)

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  195.0575 +32.1465 0.0075   50.8 -154.0       3.7092    25.6  TRIG_00621915       
------------------------------------------
 
Foreground time interval of the image:
 -0.908   7.296 (delta_t =   8.204 [sec])
Background time interval of the image:
-239.600  -0.908 (delta_t = 238.692 [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   -0.908 sec. to    7.296 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.29696     ( -0.0831753   0.0824929 )
Norm@50keV  : 3.21971E-02    ( -0.00162975   0.00162829 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.99 using 59 PHA bins.
# Reduced chi-squared =          1.193 for     57 degrees of freedom 
# Null hypothesis probability =   1.512693e-01
 
Photon flux (15-150 keV)    in 8.204 sec: 3.83905 ( -0.209998  0.210596 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.61217e-06 ( -1.35326e-07  1.35428e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.908 sec. to    7.296 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.615017     ( -0.397521   0.364791 )
Epeak [keV] : 117.365      ( -23.4003 66.6957 )
Norm@50keV  : 6.48035E-02    ( -0.0197855   0.0311366 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.14 using 59 PHA bins.
# Reduced chi-squared =          1.020 for     56 degrees of freedom 
# Null hypothesis probability =   4.325158e-01
 
Photon flux (15-150 keV)    in 8.204 sec: 3.73236 ( -0.21645  0.21747 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.56539e-06 ( -1.40551e-07  1.39993e-07 ) ergs/cm2
 
Band function
Time interval is from   -0.908 sec. to    7.296 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.362887   ( -0.571062   1.01287 )
beta        : -1.70505    ( 1.7096   0.274232 )
Epeak [keV] : 92.0959      ( -35.1512 75.8193 )
Norm@50keV   : 8.89033E-02    ( -0.0422592   0.265839 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.45 using 59 PHA bins.
# Reduced chi-squared =          1.026 for     55 degrees of freedom 
# Null hypothesis probability =   4.205138e-01
 
Photon flux (15-150 keV)    in 8.204 sec: 3.70541 ( 3.29459  -0.22112 ) 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]    : 19.2151  (-1.10316  1.19229)
R^2/D10^2   : 0.202872  (-0.038356   0.046293)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         107.58 using 59 PHA bins.
# Reduced chi-squared =         1.8874 for     57 degrees of freedom 
# Null hypothesis probability =   5.894670e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.203e-07   1.345e-08
25- 50  5.832e-07   4.295e-08
50-150  1.586e-06   1.272e-07
15-150  2.289e-06   1.317e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 16.4546       (-0.834538     0.834227)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          92.67 using 59 PHA bins.
# Reduced chi-squared =          1.626 for     57 degrees of freedom 
# Null hypothesis probability =   1.972289e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.361e-07   1.944e-08
25- 50  6.465e-07   3.741e-08
50-150  1.418e-06   8.327e-08
15-150  2.401e-06   1.337e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.60595        (-2.67053      2.9556)
R1^2/D10^2  : 1.11780        (-0.541199      1.74807)
kT2 [keV]   : 30.4630        (-6.00425      16.4225)
R2^2/D10^2  : 3.22089E-02    (-0.0249524   0.0437006)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.43 using 59 PHA bins.
# Reduced chi-squared =          1.080 for     55 degrees of freedom 
# Null hypothesis probability =   3.176097e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.078e-07   4.824e-08
25- 50  6.342e-07   1.276e-07
50-150  1.722e-06   6.483e-07
15-150  2.564e-06   7.810e-07

Peak spectrum fit

Power-law model
Time interval is from   -0.120 sec. to    0.880 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.05575     ( -0.121291   0.11873 )
Norm@50keV  : 7.67771E-02    ( -0.00595092   0.00592924 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          84.75 using 59 PHA bins.
# Reduced chi-squared =          1.487 for     57 degrees of freedom 
# Null hypothesis probability =   9.975059e-03
 
Photon flux (15-150 keV)    in 1 sec: 8.87138 ( -0.708873  0.710603 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.14415e-07 ( -6.37525e-08  6.38315e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.120 sec. to    0.880 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.266124     ( -0.595965   0.524313 )
Epeak [keV] : 129.608      ( -32.3582 131.772 )
Norm@50keV  : 0.170973    ( -0.0692332   0.13342 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.80 using 59 PHA bins.
# Reduced chi-squared =          1.389 for     56 degrees of freedom 
# Null hypothesis probability =   2.862203e-02
 
Photon flux (15-150 keV)    in 1 sec: 8.72561 ( -0.71464  0.71651 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.05268e-07 ( -6.6221e-08  6.5782e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.120 sec. to    0.880 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.479552   ( -1.08646   -0.49698 )
beta        : -1.43498    ( 1.43544   0.305643 )
Epeak [keV] : 78.0051      ( -36.6341 95.3053 )
Norm@50keV   : 0.450077    ( -0.484746   199.292 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          75.96 using 59 PHA bins.
# Reduced chi-squared =          1.381 for     55 degrees of freedom 
# Null hypothesis probability =   3.207082e-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]    : 21.5622  (-1.90022  2.16395)
R^2/D10^2   : 0.350942  (-0.0949554   0.124787)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          95.02 using 59 PHA bins.
# Reduced chi-squared =          1.667 for     57 degrees of freedom 
# Null hypothesis probability =   1.178036e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.047e-08   4.705e-09
25- 50  1.592e-07   1.940e-08
50-150  5.526e-07   6.420e-08
15-150  7.423e-07   6.955e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 37.2214       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         129.78 using 59 PHA bins.
# Reduced chi-squared =         2.2768 for     57 degrees of freedom 
# Null hypothesis probability =   1.338155e-07
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.268e-08   8.330e-09
25- 50  1.783e-07   2.510e-08
50-150  3.910e-07   1.075e-07
15-150  6.620e-07   1.613e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 12.5582        (-4.45143      4.44396)
R1^2/D10^2  : 1.20220        (-0.549237      1.4079)
kT2 [keV]   : 42.0817        (-14.1462      -45.4002)
R2^2/D10^2  : 2.90870E-02    (-0.018576   0.111627)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          76.24 using 59 PHA bins.
# Reduced chi-squared =          1.386 for     55 degrees of freedom 
# Null hypothesis probability =   3.053505e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.661e-08   1.700e-08
25- 50  1.776e-07   6.985e-08
50-150  5.806e-07   2.858e-07
15-150  8.048e-07   3.514e-07
Plot creation:
Sun Dec 21 01:32:15 EST 2014