batgrbproduct Analysis for Trigger=647642

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Jul  3 05:12:25 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger647642/GCN5_download_cron
======================================================================

  Trigger: 00647642      Segment: 000

  BAT Trigger Time: 457513160   [s; MET]
      Trigger Stop: 457513224   [s; MET]
               UTC: 2015-07-02T06:59:05.203260    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 161.248330563731   Dec: 55.9895486079891  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    5.91
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    5.91

  Flight Position:   [ source = BAT ]
    RA: 161.248330563731   Dec: 55.9895486079891  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 161.305478023688   Dec: 55.9898810325253  [deg; J2000]  
        { 10h 45m 13.3s , +55d 59' 23.6" }
         +/- 4.3261832887629 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.55960621102889 [arcmin] (formal 1-sigma fit error)
    SNR: 3.75315994116592
 
  Angular difference between Flight and Ground position is 1.918001 arcmin
 
  Partial Coding Fraction: 0.6484375    [ including projection effects ]

  Duration
     T90: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]
     T50: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 64 second)
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.143405   0.179750   0.021973   0.015635
           0.050041   0.051839   0.046198   0.043393 [error]
 Peak      0.143405   0.179750   0.021973   0.015635
           0.050041   0.051839   0.046198   0.043393 [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 4.74e-08 5.79e-08 5.16e-08 7.78e-08 1.84e-07 2.28e-07   erg/cm2
              Error 2.25e-08 2.43e-08 3.35e-08 1.05e-07 8.73e-08 1.46e-07   erg/cm2
Peak flux Power-law 2.43e-02 1.64e-02 7.24e-03 4.39e-03 5.01e-02 5.22e-02   ph/cm2/s
              Error 1.17e-02 6.78e-03 4.61e-03 5.61e-03 2.05e-02 2.17e-02   ph/cm2/s
 
Fluence   Cutoff-PL 4.09e-08 1.01e-07 1.88e-08 4.28e-11 1.61e-07 1.61e-07   erg/cm2
              Error 2.56e-08 3.85e-08 3.04e-08 2.88e-09 6.16e-08 6.16e-08   erg/cm2
Peak flux Cutoff-PL 1.97e-02 2.89e-02 3.15e-03 3.89e-06 5.18e-02 5.18e-02   ph/cm2/s
              Error 1.29e-02 1.06e-02 4.68e-03 2.41e-04 1.84e-02 1.84e-02   ph/cm2/s
 
Fluence        Band 4.06e-08 1.01e-07 2.42e-08 2.19e-10 1.66e-07 1.66e-07   erg/cm2
              Error 2.34e-08 3.74e-08 -------- -------- -------- --------   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    2.174    0.640    -      -           3.06e-04 1.58e-04   67.280 57
CPL  -4.900    0.000      33.0    7.6      1.17e+01 0.00e+00   58.860 56
 
The chi2 of BB fit is 59.68 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    2.174    0.640    -      -           3.06e-04 1.58e-04   67.280 57
CPL  -4.900    0.000      33.0    7.6      1.17e+01 0.00e+00   58.860 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   64.000    0.000   64.000
T90    64.000    0.000   64.000
T50    64.000    0.000   64.000
Peak   64.000    0.000   64.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  161.3055 +55.9899 0.0510   36.3  -20.6       0.3938     3.8  TRIG_00647642       
------------------------------------------
 
Foreground time interval of the image:
  0.000  64.000 (delta_t =  64.000 [sec])
Background time interval of the image:

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    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.17363     ( -0.595719   0.683399 )
Norm@50keV  : 3.06157E-04    ( -0.000155822   0.000160989 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.28 using 59 PHA bins.
# Reduced chi-squared =          1.180 for     57 degrees of freedom 
# Null hypothesis probability =   1.656301e-01
 
Photon flux (15-150 keV)    in 64 sec: 5.00806E-02 ( -0.020511  0.02053 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.83605e-07 ( -8.21478e-08  9.25088e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.89958     (     )
Epeak [keV] : 32.9743      ( -6.63676 8.60496 )
Norm@50keV  : 11.6678    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.86 using 59 PHA bins.
# Reduced chi-squared =          1.051 for     56 degrees of freedom 
# Null hypothesis probability =   3.711560e-01
 
Photon flux (15-150 keV)    in 64 sec: 5.17825E-02 ( -0.018079  0.0187291 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.60965e-07 ( -5.84435e-08  6.46707e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.63589   ( -4.68588   -4.63589 )
beta        : -9.31479    ( 9.31479   19.275 )
Epeak [keV] : 33.6557      ( -7.3691 7.69392 )
Norm@50keV   : 7.00040    ( -2.32454   86.639 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.87 using 59 PHA bins.
# Reduced chi-squared =          1.070 for     55 degrees of freedom 
# Null hypothesis probability =   3.359566e-01
 
Photon flux (15-150 keV)    in 64 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.65983e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 8.61291  (-2.11814  2.73789)
R^2/D10^2   : 5.17590E-02  (-0.0518306   0.104579)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.68 using 59 PHA bins.
# Reduced chi-squared =          1.047 for     57 degrees of freedom 
# Null hypothesis probability =   3.785226e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.669e-08   2.862e-08
25- 50  9.251e-08   5.661e-08
50-150  3.079e-08   2.378e-08
15-150  1.700e-07   1.109e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 38.9992       (-19.572      58.6096)
Norm        : 0.357949       (-0.170892     0.286946)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.27 using 59 PHA bins.
# Reduced chi-squared =          1.128 for     57 degrees of freedom 
# Null hypothesis probability =   2.369343e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.215e-08   3.270e-08
25- 50  6.785e-08   4.384e-08
50-150  5.105e-08   4.480e-08
15-150  1.711e-07   1.180e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.27247        (-8.96565      -8.96565)
R1^2/D10^2  : 4.49700E-03        (-0.00522092      -0.00522092)
kT2 [keV]   : 8.73404        (-8.66663      -8.66663)
R2^2/D10^2  : 4.54086E-02    (-0.046158   -0.046158)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.69 using 59 PHA bins.
# Reduced chi-squared =          1.085 for     55 degrees of freedom 
# Null hypothesis probability =   3.093099e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.611e-08   7.776e-03
25- 50  9.283e-08   6.275e-02
50-150  3.191e-08   1.434e+00
15-150  1.708e-07   1.584e+00

Peak spectrum fit

Power-law model
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.17363     ( -0.595719   0.683399 )
Norm@50keV  : 3.06157E-04    ( -0.000155822   0.000160989 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.28 using 59 PHA bins.
# Reduced chi-squared =          1.180 for     57 degrees of freedom 
# Null hypothesis probability =   1.656301e-01
 
Photon flux (15-150 keV)    in 64 sec: 5.00806E-02 ( -0.020511  0.02053 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.83605e-07 ( -8.21478e-08  9.25088e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -4.89958     (     )
Epeak [keV] : 32.9743      ( -6.63676 8.60496 )
Norm@50keV  : 11.6678    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.86 using 59 PHA bins.
# Reduced chi-squared =          1.051 for     56 degrees of freedom 
# Null hypothesis probability =   3.711560e-01
 
Photon flux (15-150 keV)    in 64 sec: 5.17825E-02 ( -0.018079  0.0187291 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.60965e-07 ( -5.84435e-08  6.46707e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.63589   ( -4.68588   -4.63589 )
beta        : -9.31479    ( 9.31479   19.275 )
Epeak [keV] : 33.6557      ( -7.3691 7.69392 )
Norm@50keV   : 7.00040    ( -2.32454   86.639 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.87 using 59 PHA bins.
# Reduced chi-squared =          1.070 for     55 degrees of freedom 
# Null hypothesis probability =   3.359566e-01
 
Photon flux (15-150 keV)    in 64 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.65983e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 8.61291  (-2.11814  2.73789)
R^2/D10^2   : 5.17590E-02  (-0.0518306   0.104579)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.68 using 59 PHA bins.
# Reduced chi-squared =          1.047 for     57 degrees of freedom 
# Null hypothesis probability =   3.785226e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.669e-08   2.890e-08
25- 50  9.251e-08   5.853e-08
50-150  3.079e-08   2.415e-08
15-150  1.700e-07   1.081e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 38.9992       (-19.572      58.6096)
Norm        : 0.357949       (-0.170892     0.286946)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.27 using 59 PHA bins.
# Reduced chi-squared =          1.128 for     57 degrees of freedom 
# Null hypothesis probability =   2.369343e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.215e-08   3.299e-08
25- 50  6.785e-08   4.320e-08
50-150  5.105e-08   4.400e-08
15-150  1.711e-07   1.146e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.27247        (-8.96565      -8.96565)
R1^2/D10^2  : 4.49700E-03        (-0.00522092      -0.00522092)
kT2 [keV]   : 8.73404        (-8.66663      -8.66663)
R2^2/D10^2  : 4.54086E-02    (-0.046158   -0.046158)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.69 using 59 PHA bins.
# Reduced chi-squared =          1.085 for     55 degrees of freedom 
# Null hypothesis probability =   3.093099e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.611e-08   7.878e-03
25- 50  9.283e-08   6.758e-02
50-150  3.191e-08   1.454e+00
15-150  1.708e-07   1.636e+00
Plot creation:
Fri Jul  3 05:17:38 EDT 2015