batgrbproduct Analysis for Trigger=686842

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri May 20 04:03:41 EDT 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger686842/GCN5_download_cron
======================================================================

  Trigger: 00686842      Segment: 000

  BAT Trigger Time: 485329302.168   [s; MET]
      Trigger Stop: 485329302.176   [s; MET]
               UTC: 2016-05-19T05:41:25.878580    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 293.749942771204   Dec: 21.8766926255863  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    7.01
     Image Trigger?:     NO
     Rate S/N Ratio:     18.4932420089069  [ if not an image trigger ]
     Image S/N Ratio:    7.01

  Flight Position:   [ source = BAT ]
    RA: 293.749942771204   Dec: 21.8766926255863  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 293.715346997134   Dec: 21.8497701881899  [deg; J2000]  
        { 19h 34m 51.7s , +21d 50' 59.2" }
         +/- 2.95508131017094 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.68396646310977 [arcmin] (formal 1-sigma fit error)
    SNR: 6.46958360846198
 
  Angular difference between Flight and Ground position is 2.514070 arcmin
 
  Partial Coding Fraction: 0.6640625    [ including projection effects ]

  Duration
     T90: 0.00800001621246338 +/- 0.0905096828275688
        Measured from: 0
                   to: 0.00800001621246338     [s; relative to TRIGTIME]
     T50: 0.00800001621246338 +/- 0.0640000104904175
        Measured from: 0
                   to: 0.00800001621246338     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 0.00800001621246338 second)
        Measured from: 0     
                   to: 0.00800001621246338     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.00800001621246338     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.006103   0.008889   0.002158  -0.000566
           0.001592   0.001885   0.000997   0.000687 [error]
 Peak      0.006103   0.008889   0.002158  -0.000566
           0.001592   0.001885   0.000997   0.000687 [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 1.96e-09 1.94e-09 1.34e-09 1.47e-09 5.83e-09 6.72e-09   erg/cm2
              Error 7.53e-10 6.46e-10 8.15e-10 2.02e-09 2.05e-09 3.03e-09   erg/cm2
Peak flux Power-law 8.09e+00 4.46e+00 1.54e+00 6.98e-01 1.45e+01 1.48e+01   ph/cm2/s
              Error 3.16e+00 1.45e+00 9.06e-01 8.95e-01 4.47e+00 4.55e+00   ph/cm2/s
 
Fluence   Cutoff-PL 1.97e-09 2.26e-09 9.92e-10 1.33e-10 5.34e-09 5.36e-09   erg/cm2
              Error 8.02e-10 1.10e-09 1.09e-09 1.89e-09 2.07e-09 3.02e-09   erg/cm2
Peak flux Cutoff-PL 8.03e+00 5.21e+00 1.20e+00 8.64e-02 1.45e+01 1.45e+01   ph/cm2/s
              Error 3.38e+00 2.52e+00 1.06e+00 8.42e-01 4.55e+00 4.54e+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    2.530    0.633    -      -           7.23e-02 3.28e-02   33.210 57
CPL   1.194    0.000      20.0    0.0      5.69e-01 0.00e+00   32.900 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.530    0.633    -      -           7.23e-02 3.28e-02   33.210 57
CPL   1.194    0.000      20.0    0.0      5.69e-01 0.00e+00   32.900 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    0.008    0.000    0.008
T90     0.008    0.000    0.008
T50     0.008    0.000    0.008
Peak    0.008    0.000    0.008

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  293.7153 +21.8498 0.0295   29.8 -137.7       0.0167     6.5  TRIG_00686842       
------------------------------------------
 
Foreground time interval of the image:
  0.000   0.008 (delta_t =   0.008 [sec])
Background time interval of the image:
-157.067 -55.739 (delta_t = 101.328 [sec])
-54.168  -6.168 (delta_t =  48.000 [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    0.000 sec. to    0.008 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.52991     ( -0.597064   0.669546 )
Norm@50keV  : 7.23139E-02    ( -0.0330446   0.0326273 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          33.21 using 59 PHA bins.
# Reduced chi-squared =         0.5827 for     57 degrees of freedom 
# Null hypothesis probability =   9.950685e-01
 
Photon flux (15-150 keV)    in 0.008 sec: 14.4700 ( -4.47423  4.47474 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.83266e-09 ( -2.00634e-09  2.0937e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.008 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.19430     (     )
Epeak [keV] : 20.0195      (   )
Norm@50keV  : 0.569206    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          32.90 using 59 PHA bins.
# Reduced chi-squared =         0.5876 for     56 degrees of freedom 
# Null hypothesis probability =   9.941249e-01
 
Photon flux (15-150 keV)    in 0.008 sec: 14.5231 ( -4.53638  4.5628 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.34465e-09 ( -1.70977e-09  2.42543e-09 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.008 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.82150   ( 1.8215   1.8215 )
beta        : -8.90972    ( 8.50092   18.4856 )
Epeak [keV] : 8.45495      ( -4.49411 -8.43258 )
Norm@50keV   : 0.218151    ( -0.0663253   1.33766e+08 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          32.97 using 59 PHA bins.
# Reduced chi-squared =         0.5995 for     55 degrees of freedom 
# Null hypothesis probability =   9.919437e-01
 
Photon flux (15-150 keV)    in 0.008 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]    : 7.60723  (-1.64355  1.91191)
R^2/D10^2   : 21.7731  (-14.4516   38.732)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          33.84 using 59 PHA bins.
# Reduced chi-squared =         0.5937 for     57 degrees of freedom 
# Null hypothesis probability =   9.937260e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.751e-09   9.423e-10
25- 50  2.803e-09   1.300e-09
50-150  6.219e-10   4.196e-10
15-150  5.176e-09   2.504e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 29.1409       (-12.0307      31.9855)
Norm        : 123.364       (-61.9474     104.186)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          32.91 using 59 PHA bins.
# Reduced chi-squared =         0.5774 for     57 degrees of freedom 
# Null hypothesis probability =   9.956262e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.978e-09   9.170e-10
25- 50  2.224e-09   1.132e-09
50-150  1.172e-09   8.913e-10
15-150  5.375e-09   2.714e-09
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.80561        (-2.77329      28.042)
R1^2/D10^2  : 812.023        (-915.71      -915.71)
kT2 [keV]   : 8.76668        (-2.28003      -8.70246)
R2^2/D10^2  : 9.53923    (-10.068   34.9505)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          32.62 using 59 PHA bins.
# Reduced chi-squared =         0.5930 for     55 degrees of freedom 
# Null hypothesis probability =   9.929542e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.917e-09   1.011e-09
25- 50  2.386e-09   1.460e-09
50-150  8.076e-10   5.424e-10
15-150  5.111e-09   2.670e-09

Peak spectrum fit

Power-law model
Time interval is from    0.000 sec. to    0.008 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.52991     ( -0.597064   0.669546 )
Norm@50keV  : 7.23139E-02    ( -0.0330446   0.0326273 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          33.21 using 59 PHA bins.
# Reduced chi-squared =         0.5827 for     57 degrees of freedom 
# Null hypothesis probability =   9.950685e-01
 
Photon flux (15-150 keV)    in 0.008 sec: 14.4700 ( -4.47423  4.47474 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.83266e-09 ( -2.00634e-09  2.0937e-09 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.008 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.19430     (     )
Epeak [keV] : 20.0195      (   )
Norm@50keV  : 0.569206    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          32.90 using 59 PHA bins.
# Reduced chi-squared =         0.5876 for     56 degrees of freedom 
# Null hypothesis probability =   9.941249e-01
 
Photon flux (15-150 keV)    in 0.008 sec: 14.5231 ( -4.53638  4.5628 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.34465e-09 ( -1.70977e-09  2.42543e-09 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.008 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.82150   ( 1.8215   1.8215 )
beta        : -8.90972    ( 8.50092   18.4856 )
Epeak [keV] : 8.45495      ( -4.49411 -8.43258 )
Norm@50keV   : 0.218151    ( -0.0663253   1.33766e+08 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          32.97 using 59 PHA bins.
# Reduced chi-squared =         0.5995 for     55 degrees of freedom 
# Null hypothesis probability =   9.919437e-01
 
Photon flux (15-150 keV)    in 0.008 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]    : 7.60723  (-1.64355  1.91191)
R^2/D10^2   : 21.7731  (-14.4516   38.732)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          33.84 using 59 PHA bins.
# Reduced chi-squared =         0.5937 for     57 degrees of freedom 
# Null hypothesis probability =   9.937260e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.751e-09   9.694e-10
25- 50  2.803e-09   1.542e-09
50-150  6.219e-10   4.640e-10
15-150  5.176e-09   2.584e-09
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 29.1409       (-12.0307      31.9855)
Norm        : 123.364       (-61.9474     104.186)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          32.91 using 59 PHA bins.
# Reduced chi-squared =         0.5774 for     57 degrees of freedom 
# Null hypothesis probability =   9.956262e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.978e-09   9.226e-10
25- 50  2.224e-09   9.871e-10
50-150  1.172e-09   8.824e-10
15-150  5.375e-09   2.578e-09
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.80561        (-2.77329      28.042)
R1^2/D10^2  : 812.023        (-915.71      -915.71)
kT2 [keV]   : 8.76668        (-2.28003      -8.70246)
R2^2/D10^2  : 9.53923    (-10.068   34.9505)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          32.62 using 59 PHA bins.
# Reduced chi-squared =         0.5930 for     55 degrees of freedom 
# Null hypothesis probability =   9.929542e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.917e-09   9.460e-10
25- 50  2.386e-09   1.406e-09
50-150  8.076e-10   5.348e-10
15-150  5.111e-09   2.791e-09
Plot creation:
Fri May 20 04:09:30 EDT 2016