batgrbproduct Analysis for Trigger=684679

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon May  2 00:21:36 EDT 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger684679/GCN5_download_cron
======================================================================

  Trigger: 00684679      Segment: 000

  BAT Trigger Time: 483756048   [s; MET]
      Trigger Stop: 483756112   [s; MET]
               UTC: 2016-05-01T00:40:31.797220    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 286.376860952753   Dec: -17.2398515642378  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.34
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    11.34

  Flight Position:   [ source = BAT ]
    RA: 286.376860952753   Dec: -17.2398515642378  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 286.388526753716   Dec: -17.2485673931931  [deg; J2000]  
        { 19h 05m 33.2s , -17d 14' 54.8" }
         +/- 1.82379178759854 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.863339979951939 [arcmin] (formal 1-sigma fit error)
    SNR: 12.891296165081
 
  Angular difference between Flight and Ground position is 0.848734 arcmin
 
  Partial Coding Fraction: 0.8125    [ including projection effects ]

  Duration
     T90: 118.119999945164 +/- 19.4731109098682
        Measured from: -48.9679998755455
                   to: 69.1520000696182     [s; relative to TRIGTIME]
     T50: 53.6159999966621 +/- 8.45801517213327
        Measured from: -17.7199999094009
                   to: 35.8960000872612     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -54.3799999952316     
                   to: -53.3799999952316     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -54.3560000061989     
                   to: 72.6000000238419     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.062208   0.955712   0.266892   0.081384
           0.087591   0.079198   0.063569   0.052805 [error]
 Peak      0.032179   0.025737  -0.002149   0.006891
           0.010154   0.009404   0.007430   0.005640 [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 3.37e-07 3.60e-07 2.72e-07 3.35e-07 1.10e-06 1.30e-06   erg/cm2
              Error 4.33e-08 3.80e-08 5.48e-08 1.27e-07 1.29e-07 2.02e-07   erg/cm2
Peak flux Power-law 2.73e-01 1.39e-01 4.39e-02 1.77e-02 4.66e-01 4.74e-01   ph/cm2/s
              Error 1.49e-01 1.09e-01 5.30e-02 4.78e-02 2.20e-01 2.27e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.07e-07 4.26e-07 2.00e-07 2.21e-08 9.53e-07 9.55e-07   erg/cm2
              Error 4.93e-08 5.45e-08 7.38e-08 4.92e-08 1.26e-07 1.35e-07   erg/cm2
Peak flux Cutoff-PL 2.75e-01 1.38e-01 4.26e-02 1.67e-02 4.65e-01 4.70e-01   ph/cm2/s
              Error 2.13e-01 1.23e-01 2.84e-02 3.41e-02 2.19e-01 2.44e-01   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    2.403    0.201    -      -           8.91e-04 1.31e-04   63.090 57
CPL   0.571    1.257      28.1    9.3      1.25e-02 4.81e-02   54.260 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.666    1.276    -      -           2.14e-03 1.84e-03   75.350 57
CPL  -2.424    0.000      23.3    0.0      1.18e+01 0.00e+00   74.260 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  126.956  -54.356   72.600
T90   118.120  -48.968   69.152
T50    53.616  -17.720   35.896
Peak    1.000  -54.380  -53.380

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  286.3885 -17.2486 0.0150   19.5 -118.4       1.7623    12.9  TRIG_00684679       
------------------------------------------
 
Foreground time interval of the image:
-17.699  72.600 (delta_t =  90.299 [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
Multiple GTIs in the spectrum
tstart tstop
-54.356000 -47.750000
-47.000000 72.600000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.40277     ( -0.194873   0.208077 )
Norm@50keV  : 8.90506E-04    ( -0.000132055   0.000130735 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.09 using 59 PHA bins.
# Reduced chi-squared =          1.107 for     57 degrees of freedom 
# Null hypothesis probability =   2.698335e-01
 
Photon flux (15-150 keV)    in 126.2 sec: 0.165033 ( -0.0163434  0.0163475 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.09693e-06 ( -1.27471e-07  1.30635e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-54.356000 -47.750000
-47.000000 72.600000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.571015     ( -1.39483   1.11948 )
Epeak [keV] : 28.0815      ( -13.1973 5.38438 )
Norm@50keV  : 1.24526E-02    ( -0.0124526   0.083716 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.26 using 59 PHA bins.
# Reduced chi-squared =         0.9689 for     56 degrees of freedom 
# Null hypothesis probability =   5.410434e-01
 
Photon flux (15-150 keV)    in 126.2 sec: 0.156345 ( -0.016744  0.016844 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.52783e-07 ( -1.18301e-07  1.34654e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-54.356000 -47.750000
-47.000000 72.600000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.468612   ( -0.791138   1.6184 )
beta        : -4.59205    ( 4.42423   1.66518 )
Epeak [keV] : 28.6977      ( -11.4082 5.02067 )
Norm@50keV   : 1.42009E-02    ( -0.00701889   0.170068 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.22 using 59 PHA bins.
# Reduced chi-squared =         0.9858 for     55 degrees of freedom 
# Null hypothesis probability =   5.043473e-01
 
Photon flux (15-150 keV)    in 126.2 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]    : 8.05663  (-0.778316  0.852741)
R^2/D10^2   : 0.176794  (-0.0602713   0.0925246)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.31 using 59 PHA bins.
# Reduced chi-squared =          1.058 for     57 degrees of freedom 
# Null hypothesis probability =   3.570880e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.632e-07   4.625e-08
25- 50  4.664e-07   6.045e-08
50-150  1.253e-07   3.687e-08
15-150  8.550e-07   1.070e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 35.4736       (-7.18488      9.84624)
Norm        : 1.16542       (-0.213122     0.268089)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.45 using 59 PHA bins.
# Reduced chi-squared =         0.9728 for     57 degrees of freedom 
# Null hypothesis probability =   5.334136e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.231e-07   4.013e-08
25- 50  4.024e-07   4.486e-08
50-150  2.716e-07   8.985e-08
15-150  9.971e-07   1.395e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.59712        (-2.18383      10.4359)
R1^2/D10^2  : 2.19027        (-1.909      1138.4)
kT2 [keV]   : 9.76931        (-1.64144      5.84629)
R2^2/D10^2  : 6.67425E-02    (-0.0620907   0.0808959)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.79 using 59 PHA bins.
# Reduced chi-squared =         0.9781 for     55 degrees of freedom 
# Null hypothesis probability =   5.207617e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.091e-07   1.569e-07
25- 50  4.291e-07   2.263e-07
50-150  1.906e-07   1.107e-07
15-150  9.288e-07   4.641e-07

Peak spectrum fit

Power-law model
Time interval is from  -54.380 sec. to  -53.380 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.66632     ( -1.04208   1.50893 )
Norm@50keV  : 2.13673E-03    ( -0.00168562   0.00199088 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          75.35 using 59 PHA bins.
# Reduced chi-squared =          1.322 for     57 degrees of freedom 
# Null hypothesis probability =   5.219523e-02
 
Photon flux (15-150 keV)    in 1 sec: 0.466422 ( -0.219359  0.220283 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.247e-08 ( -1.25931e-08  1.56386e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -54.380 sec. to  -53.380 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -2.42383     (     )
Epeak [keV] : 23.2783      (   )
Norm@50keV  : 11.8059    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.26 using 59 PHA bins.
# Reduced chi-squared =          1.326 for     56 degrees of freedom 
# Null hypothesis probability =   5.169090e-02
 
Photon flux (15-150 keV)    in 1 sec: 0.465348 0.449904 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.89447e-16 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from  -54.380 sec. to  -53.380 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.34056   ( 1.30006   1.30006 )
beta        : -8.09703    ( 7.37692   16.0594 )
Epeak [keV] : 22.3275      ( -22.4974 11.977 )
Norm@50keV   : 1.93315    ( -2.12934   4.92037e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.34 using 59 PHA bins.
# Reduced chi-squared =          1.352 for     55 degrees of freedom 
# Null hypothesis probability =   4.223040e-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]    : 5.81659  (-2.06932  2.84096)
R^2/D10^2   : 2.07277  (-2.07271   13.0856)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.30 using 59 PHA bins.
# Reduced chi-squared =          1.303 for     57 degrees of freedom 
# Null hypothesis probability =   6.161166e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.899e-09   5.660e-09
25- 50  8.288e-09   5.810e-09
50-150  6.671e-10   6.575e-10
15-150  1.786e-08   1.093e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 19.1607       (-11.1783      62.9186)
Norm        : 5.93171       (-5.92946     15.733)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          75.05 using 59 PHA bins.
# Reduced chi-squared =          1.317 for     57 degrees of freedom 
# Null hypothesis probability =   5.478187e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.863e-09   5.840e-09
25- 50  7.505e-09   5.095e-09
50-150  2.089e-09   2.268e-09
15-150  1.846e-08   1.238e-08
Double BB
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.30 using 59 PHA bins.
#Fit statistic : Chi-Squared =          74.29 using 59 PHA bins.
#Fit statistic : Chi-Squared =          74.28 using 59 PHA bins.
#Fit statistic : Chi-Squared =          74.27 using 59 PHA bins.
# Reduced chi-squared =          1.351 for     55 degrees of freedom 
# Reduced chi-squared =          1.351 for     55 degrees of freedom 
# Reduced chi-squared =          1.351 for     55 degrees of freedom 
# Reduced chi-squared =          1.350 for     55 degrees of freedom 
# Null hypothesis probability =   4.249301e-02
# Null hypothesis probability =   4.257480e-02
# Null hypothesis probability =   4.265280e-02
# Null hypothesis probability =   4.272452e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.854e-09   1.188e-02
25- 50  8.362e-09   1.038e-01
50-150  6.933e-10   2.604e+00
15-150  1.791e-08   2.497e+00
Plot creation:
Mon May  2 00:27:09 EDT 2016