batgrbproduct Analysis for Trigger=568855

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Sep  1 10:20:44 EDT 2013
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger568855/batgroup_hand_proc
======================================================================

  Trigger: 00568855      Segment: 000

  BAT Trigger Time: 399649710.656   [s; MET]
      Trigger Stop: 399649712.704   [s; MET]
               UTC: 2013-08-31T13:48:19.679500    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 192.445770104134   Dec: -29.176729615974  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.44
     Image Trigger?:     NO
     Rate S/N Ratio:     10.6301458127346  [ if not an image trigger ]
     Image S/N Ratio:    7.44

  Flight Position:   [ source = BAT ]
    RA: 192.445770104134   Dec: -29.176729615974  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 192.453778363335   Dec: -29.1870964515425  [deg; J2000]  
        { 12h 49m 48.9s , -29d 11' 13.5" }
         +/- 2.05964664893651 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.742248997047377 [arcmin] (formal 1-sigma fit error)
    SNR: 10.8353530424634
 
  Angular difference between Flight and Ground position is 0.750256 arcmin
 
  Partial Coding Fraction: 0.1484375    [ including projection effects ]

  Duration
     T90: 37.7760000228882 +/- 10.3630852590037
        Measured from: -11.3360000252724
                   to: 26.4399999976158     [s; relative to TRIGTIME]
     T50: 7.74400007724762 +/- 9.35677205323313
        Measured from: -2.90400004386902
                   to: 4.8400000333786     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.0520000457763672     
                   to: 0.947999954223633     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -13.9120000004768     
                   to: 30.5519999861717     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.583732   0.948850   0.472130   0.087431
           0.093282   0.092502   0.082183   0.069123 [error]
 Peak      0.069661   0.105281   0.059584   0.035882
           0.015239   0.015741   0.015195   0.011861 [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 2.77e-07 4.04e-07 4.40e-07 8.96e-07 1.40e-06 2.02e-06   erg/cm2
              Error 5.20e-08 5.05e-08 8.00e-08 3.27e-07 1.92e-07 4.08e-07   erg/cm2
Peak flux Power-law 9.76e-01 8.01e-01 4.45e-01 3.65e-01 2.38e+00 2.59e+00   ph/cm2/s
              Error 2.79e-01 1.52e-01 1.20e-01 1.89e-01 4.54e-01 4.85e-01   ph/cm2/s
 
Fluence   Cutoff-PL 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 Cutoff-PL 9.04e-01 8.54e-01 4.60e-01 1.91e-01 2.34e+00 2.41e+00   ph/cm2/s
              Error 3.19e-01 1.97e-01 1.37e-01 2.24e-01 4.65e-01 5.56e-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    1.877    0.213    -      -           3.41e-03 4.70e-04   40.880 57
CPL   0.484    1.330      49.3   17.1      1.94e-02 6.72e-02   36.090 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    1.846    0.327    -      -           1.70e-02 3.56e-03   68.420 57
CPL   1.276    1.337      58.8    0.0      3.46e-02 0.00e+00   67.850 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: 2.304000 sec.
T50 in the 50-300 keV band: 1.344000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   44.464  -13.912   30.552
T90    37.776  -11.336   26.440
T50     7.744   -2.904    4.840
Peak    1.000   -0.052    0.948

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  192.4538   -29.1871   0.0178    49.8570  -144.6286         2.0191101     10.835 TRIG_00568855                 
 
Foreground time interval of the image:
-13.912  26.845 (delta_t =  40.757 [sec])
Background time interval of the image:
-239.656 -13.912 (delta_t = 225.744 [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  -13.912 sec. to   30.552 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.87747     ( -0.208414   0.218504 )
Norm@50keV  : 3.41427E-03    ( -0.000473785   0.000466199 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.88 using 59 PHA bins.
# Reduced chi-squared =         0.7173 for     57 degrees of freedom 
# Null hypothesis probability =   9.470447e-01
 
Photon flux (15-150 keV)    in 44.46 sec: 0.485362 ( -0.061927  0.0620827 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.39548e-06 ( -1.90889e-07  1.92983e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -13.912 sec. to   30.552 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.483903     ( -1.54392   1.11554 )
Epeak [keV] : 49.2532      ( -9.41121 24.7403 )
Norm@50keV  : 1.93923E-02    ( -0.0194143   0.115043 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.09 using 59 PHA bins.
# Reduced chi-squared =         0.6444 for     56 degrees of freedom 
# Null hypothesis probability =   9.822051e-01
 
Photon flux (15-150 keV)    in 44.46 sec: 0.459802 ( -0.065715  0.06559 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from  -13.912 sec. to   30.552 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 8.01229E-02   ( -1.52918   2.97544 )
beta        : -2.66713    ( 2.67651   0.671409 )
Epeak [keV] : 44.4591      ( -11.3283 20.1242 )
Norm@50keV   : 4.28773E-02    ( -0.0467382   1.9404 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          35.20 using 59 PHA bins.
# Reduced chi-squared =         0.6400 for     55 degrees of freedom 
# Null hypothesis probability =   9.826932e-01
 
Photon flux (15-150 keV)    in 44.46 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]    : 11.6653  (-1.40484  1.59862)
R^2/D10^2   : 0.133159  (-0.051667   0.08303)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.40 using 59 PHA bins.
# Reduced chi-squared =         0.7088 for     57 degrees of freedom 
# Null hypothesis probability =   9.529229e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.699e-07   3.977e-08
25- 50  5.170e-07   8.676e-08
50-150  4.149e-07   1.074e-07
15-150  1.102e-06   1.903e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 84.5347       (-26.2354      49.8082)
Norm        : 2.26318       (-0.390273     0.47885)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.41 using 59 PHA bins.
# Reduced chi-squared =         0.6564 for     57 degrees of freedom 
# Null hypothesis probability =   9.791152e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.619e-07   4.584e-08
25- 50  4.368e-07   5.431e-08
50-150  6.394e-07   2.813e-07
15-150  1.338e-06   3.090e-07
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.91832        (      )
R1^2/D10^2  : 0.214829        (-0.125653      923.663)
kT2 [keV]   : 42.2814        (-44.1786      -44.1788)
R2^2/D10^2  : 5.21059E-04    (-0.00039736   0.129224)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.13 using 59 PHA bins.
#Fit statistic : Chi-Squared =          35.41 using 59 PHA bins.
# Reduced chi-squared =         0.6750 for     55 degrees of freedom 
# Reduced chi-squared =         0.6438 for     55 degrees of freedom 
# Null hypothesis probability =   9.691859e-01
# Null hypothesis probability =   9.814892e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.292e-07   8.801e-08
25- 50  4.751e-07   1.740e-07
50-150  4.725e-07   1.637e-07
15-150  1.177e-06   3.332e-07

Peak spectrum fit

Power-law model
Time interval is from   -0.052 sec. to    0.948 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.84620     ( -0.313548   0.340121 )
Norm@50keV  : 1.69829E-02    ( -0.00361429   0.00350872 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.42 using 59 PHA bins.
# Reduced chi-squared =          1.200 for     57 degrees of freedom 
# Null hypothesis probability =   1.429755e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.38346 ( -0.453959  0.454902 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.56162e-07 ( -3.26775e-08  3.3201e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.052 sec. to    0.948 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.27640     ( -1.79902   0.875691 )
Epeak [keV] : 58.8035      (   )
Norm@50keV  : 3.45688E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.85 using 59 PHA bins.
# Reduced chi-squared =          1.212 for     56 degrees of freedom 
# Null hypothesis probability =   1.332447e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.34137 ( -0.46537  0.46449 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.50525e-07 ( -3.6712e-08  1.8609e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.052 sec. to    0.948 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.70391   ( -4.70391   -4.70391 )
beta        : -2.17253    ( -0.637248   0.453278 )
Epeak [keV] : 29.3312      ( -8.07259 6.57996 )
Norm@50keV   : 570.330    ( -105.656   1.87262e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.86 using 59 PHA bins.
# Reduced chi-squared =          1.216 for     55 degrees of freedom 
# Null hypothesis probability =   1.311398e-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]    : 11.0311  (-2.35517  3.06268)
R^2/D10^2   : 0.784333  (-0.470795   1.14591)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.06 using 59 PHA bins.
# Reduced chi-squared =          1.282 for     57 degrees of freedom 
# Null hypothesis probability =   7.446818e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.995e-08   6.400e-09
25- 50  5.662e-08   1.745e-08
50-150  3.901e-08   1.777e-08
15-150  1.156e-07   3.672e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 93.3569       (-42.42      -93.3564)
Norm        : 10.7691       (-2.4513     3.62327)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.83 using 59 PHA bins.
# Reduced chi-squared =          1.190 for     57 degrees of freedom 
# Null hypothesis probability =   1.544499e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.812e-08   7.170e-09
25- 50  4.795e-08   1.578e-08
50-150  7.465e-08   5.158e-08
15-150  1.507e-07   5.545e-08
Double BB
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.91770        (-3.47458      3.10529)
R1^2/D10^2  : 2.17903        (      )
kT2 [keV]   : 30.9138        (-16.7794      -30.9327)
R2^2/D10^2  : 1.04823E-02    (-0.0102395   0.234293)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.22 using 59 PHA bins.
#Fit statistic : Chi-Squared =          66.94 using 59 PHA bins.
# Reduced chi-squared =          1.222 for     55 degrees of freedom 
# Reduced chi-squared =          1.217 for     55 degrees of freedom 
# Null hypothesis probability =   1.249329e-01
# Null hypothesis probability =   1.296707e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.637e-08   1.543e-08
25- 50  4.917e-08   2.725e-08
50-150  6.763e-08   4.120e-08
15-150  1.432e-07   7.880e-08
Plot creation:
Sun Sep  1 11:40:50 EDT 2013