batgrbproduct Analysis for Trigger=678197

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Tue Mar  8 13:08:28 EST 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger678197/GCN5_download_cron
======================================================================

  Trigger: 00678197      Segment: 000

  BAT Trigger Time: 479059304   [s; MET]
      Trigger Stop: 479059368   [s; MET]
               UTC: 2016-03-07T16:01:28.054460    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 75.1553666430309   Dec: 45.0788117010882  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    6.29
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    6.29

  Flight Position:   [ source = BAT ]
    RA: 75.1553666430309   Dec: 45.0788117010882  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 75.0966816252204   Dec: 45.0977631873392  [deg; J2000]  
        { 05h 00m 23.2s , +45d 05' 51.9" }
         +/- 4.46932305108502 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.54143984767847 [arcmin] (formal 1-sigma fit error)
    SNR: 3.58262702788193
 
  Angular difference between Flight and Ground position is 2.733668 arcmin
 
  Partial Coding Fraction: 0.2285156    [ 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     0.258145   0.505572  -0.009019  -0.236324
           0.095561   0.098203   0.086355   0.075435 [error]
 Peak      0.258145   0.505572  -0.009019  -0.236324
           0.095561   0.098203   0.086355   0.075435 [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 1.42e-07 1.33e-07 8.64e-08 8.50e-08 3.96e-07 4.41e-07   erg/cm2
              Error 5.60e-08 5.10e-08 5.68e-08 1.14e-07 1.61e-07 2.12e-07   erg/cm2
Peak flux Power-law 7.33e-02 3.82e-02 1.24e-02 5.11e-03 1.27e-01 1.29e-01   ph/cm2/s
              Error 2.92e-02 1.47e-02 7.97e-03 6.43e-03 4.52e-02 4.61e-02   ph/cm2/s
 
Fluence   Cutoff-PL 8.13e-08 2.68e-07 1.65e-08 2.76e-13 3.66e-07 3.67e-07   erg/cm2
              Error 4.54e-08 8.27e-08 3.28e-08 2.27e-10 7.94e-08 1.06e-07   erg/cm2
Peak flux Cutoff-PL 3.75e-02 7.84e-02 3.03e-03 2.92e-08 1.19e-01 1.19e-01   ph/cm2/s
              Error 2.26e-02 2.29e-02 5.39e-03 2.06e-05 3.56e-02 3.56e-02   ph/cm2/s
 
Fluence        Band 1.10e-07 2.44e-07 3.62e-08 2.89e-10 3.92e-07 3.92e-07   erg/cm2
              Error 4.35e-08 -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 5.55e-02 7.25e-02 6.65e-03 2.82e-05 1.33e-01 1.33e-01   ph/cm2/s
              Error 2.75e-02 2.19e-02 -------- 1.36e-03 -------- 3.93e-02   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.628    0.618    -      -           5.94e-04 3.10e-04   59.550 57
CPL -10.000    0.000      32.4    0.0      5.81e+04 0.00e+00   46.440 56
 
The chi2 of BB fit is 49.98 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    2.628    0.618    -      -           5.94e-04 3.10e-04   59.550 57
CPL -10.000    0.000      32.4    0.0      5.81e+04 0.00e+00   46.440 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
   75.0967 +45.0978 0.0536   51.3 -164.7       0.6732     3.6  TRIG_00678197       
------------------------------------------
 
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: 2.62806     ( -0.537913   0.697654 )
Norm@50keV  : 5.94228E-04    ( -0.000299744   0.000319491 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.55 using 59 PHA bins.
# Reduced chi-squared =          1.045 for     57 degrees of freedom 
# Null hypothesis probability =   3.828552e-01
 
Photon flux (15-150 keV)    in 64 sec: 0.126749 ( -0.0451387  0.0452131 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.95508e-07 ( -1.54265e-07  1.68091e-07 ) 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: -10.0000     (     )
Epeak [keV] : 32.4247      (   )
Norm@50keV  : 5.81328E+04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.44 using 59 PHA bins.
# Reduced chi-squared =         0.8293 for     56 degrees of freedom 
# Null hypothesis probability =   8.149954e-01
 
Photon flux (15-150 keV)    in 64 sec: 0.118950 0.117724 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.26584e-17 ( 0  0 ) 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       : 5.00000   ( -3.99495   -5 )
beta        : -9.37167    ( 9.37167   19.3041 )
Epeak [keV] : 32.0823      ( -4.91013 5.52944 )
Norm@50keV   : 40.8846    ( -11.7007   79.7494 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.91 using 59 PHA bins.
# Reduced chi-squared =         0.8711 for     55 degrees of freedom 
# Null hypothesis probability =   7.399513e-01
 
Photon flux (15-150 keV)    in 64 sec: 0.133176 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.92114e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 7.99754  (-1.68808  2.12285)
R^2/D10^2   : 0.171559  (-0.108851   0.280746)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.98 using 59 PHA bins.
# Reduced chi-squared =         0.8768 for     57 degrees of freedom 
# Null hypothesis probability =   7.335776e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.270e-07   7.846e-08
25- 50  2.221e-07   1.343e-07
50-150  5.826e-08   4.614e-08
15-150  4.073e-07   2.483e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 29.4882       (-11.9997      22.5998)
Norm        : 1.14103       (-0.494558     0.878443)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.88 using 59 PHA bins.
# Reduced chi-squared =         0.9628 for     57 degrees of freedom 
# Null hypothesis probability =   5.550935e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.473e-07   9.104e-08
25- 50  1.667e-07   1.055e-07
50-150  8.925e-08   7.307e-08
15-150  4.033e-07   2.467e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.99245        (-7.99388      -7.99388)
R1^2/D10^2  : 5.10039E-02        (-0.051134      -0.051134)
kT2 [keV]   : 8.00211        (-7.99607      -7.99607)
R2^2/D10^2  : 0.120395    (-0.120567   -0.120567)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.98 using 59 PHA bins.
# Reduced chi-squared =         0.9087 for     55 degrees of freedom 
# Null hypothesis probability =   6.664526e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.269e-07   1.063e+01
25- 50  2.221e-07   8.685e+01
50-150  5.830e-08   2.118e+03
15-150  4.073e-07   2.164e+03

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: 2.62806     ( -0.537913   0.697654 )
Norm@50keV  : 5.94228E-04    ( -0.000299744   0.000319491 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.55 using 59 PHA bins.
# Reduced chi-squared =          1.045 for     57 degrees of freedom 
# Null hypothesis probability =   3.828552e-01
 
Photon flux (15-150 keV)    in 64 sec: 0.126749 ( -0.0451387  0.0452131 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.95508e-07 ( -1.54265e-07  1.68091e-07 ) 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: -10.0000     (     )
Epeak [keV] : 32.4247      (   )
Norm@50keV  : 5.81328E+04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.44 using 59 PHA bins.
# Reduced chi-squared =         0.8293 for     56 degrees of freedom 
# Null hypothesis probability =   8.149954e-01
 
Photon flux (15-150 keV)    in 64 sec: 0.118950 0.117724 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.26584e-17 ( 0  0 ) 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       : 5.00000   ( -3.99495   -5 )
beta        : -9.37167    ( 9.37167   19.3041 )
Epeak [keV] : 32.0823      ( -4.91013 5.52944 )
Norm@50keV   : 40.8846    ( -11.7007   79.7494 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.91 using 59 PHA bins.
# Reduced chi-squared =         0.8711 for     55 degrees of freedom 
# Null hypothesis probability =   7.399513e-01
 
Photon flux (15-150 keV)    in 64 sec: 0.133176 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.92114e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 7.99754  (-1.68808  2.12285)
R^2/D10^2   : 0.171559  (-0.108851   0.280746)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.98 using 59 PHA bins.
# Reduced chi-squared =         0.8768 for     57 degrees of freedom 
# Null hypothesis probability =   7.335776e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.270e-07   7.904e-08
25- 50  2.221e-07   1.360e-07
50-150  5.826e-08   4.214e-08
15-150  4.073e-07   2.563e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 29.4882       (-11.9997      22.5998)
Norm        : 1.14103       (-0.494558     0.878443)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.88 using 59 PHA bins.
# Reduced chi-squared =         0.9628 for     57 degrees of freedom 
# Null hypothesis probability =   5.550935e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.473e-07   8.345e-08
25- 50  1.667e-07   1.024e-07
50-150  8.925e-08   7.312e-08
15-150  4.033e-07   2.469e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.99245        (-7.99388      -7.99388)
R1^2/D10^2  : 5.10039E-02        (-0.051134      -0.051134)
kT2 [keV]   : 8.00211        (-7.99607      -7.99607)
R2^2/D10^2  : 0.120395    (-0.120567   -0.120567)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.98 using 59 PHA bins.
# Reduced chi-squared =         0.9087 for     55 degrees of freedom 
# Null hypothesis probability =   6.664526e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.269e-07   1.057e+01
25- 50  2.221e-07   8.867e+01
50-150  5.830e-08   2.032e+03
15-150  4.073e-07   2.417e+03
Plot creation:
Tue Mar  8 13:14:01 EST 2016