batgrbproduct analysis for trigger=755354

batgrbproduct Analysis for Trigger=755354

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Jun  1 11:46:46 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger755354/GCN5_download_cron
======================================================================

  Trigger: 00755354      Segment: 000

  BAT Trigger Time: 517960948.352   [s; MET]
      Trigger Stop: 517960960.512   [s; MET]
               UTC: 2017-05-31T22:02:09.205660    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 286.89460992882   Dec: -16.426493667783  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.47
     Image Trigger?:     NO
     Rate S/N Ratio:     10.0498756211209  [ if not an image trigger ]
     Image S/N Ratio:    9.47

  Flight Position:   [ source = BAT ]
    RA: 286.89460992882   Dec: -16.426493667783  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 286.901085723437   Dec: -16.4143380890687  [deg; J2000]  
        { 19h 07m 36.3s , -16d 24' 51.6" }
         +/- 1.53306276520638 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.658338187028736 [arcmin] (formal 1-sigma fit error)
    SNR: 16.5208640559914
 
  Angular difference between Flight and Ground position is 0.819045 arcmin
 
  Partial Coding Fraction: 0.96875    [ including projection effects ]

  Duration
     T90: 164.131999969482 +/- 8.82050386393155
        Measured from: 4.48800009489059
                   to: 168.620000064373     [s; relative to TRIGTIME]
     T50: 122.815999984741 +/- 11.0369244100889
        Measured from: 35.3760001063347
                   to: 158.192000091076     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 42.7080000042915     
                   to: 43.7080000042915     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.551999986171722     
                   to: 181.667999982834     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.352572   1.478417   0.776169  -0.045715
           0.098162   0.093027   0.082291   0.083374 [error]
 Peak      0.036408   0.036579   0.018598   0.009056
           0.007997   0.007323   0.006297   0.006405 [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 4.26e-07 5.97e-07 6.19e-07 1.18e-06 2.01e-06 2.82e-06   erg/cm2
              Error 4.70e-08 4.44e-08 7.85e-08 3.00e-07 1.79e-07 3.81e-07   erg/cm2
Peak flux Power-law 2.97e-01 2.53e-01 1.47e-01 1.27e-01 7.52e-01 8.24e-01   ph/cm2/s
              Error 1.09e-01 5.95e-02 5.31e-02 9.43e-02 1.77e-01 1.96e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.97e-07 6.47e-07 5.89e-07 3.37e-07 1.85e-06 1.97e-06   erg/cm2
              Error 5.26e-08 5.92e-08 9.33e-08 3.49e-07 2.09e-07 4.16e-07   erg/cm2
Peak flux Cutoff-PL 2.97e-01 2.53e-01 1.47e-01 1.26e-01 7.52e-01 8.23e-01   ph/cm2/s
              Error 1.11e-01 6.20e-02 5.33e-02 1.30e-01 1.78e-01 2.20e-01   ph/cm2/s
 
Fluence        Band 3.94e-07 6.44e-07 5.90e-07 3.58e-07 1.85e-06 1.99e-06   erg/cm2
              Error 5.08e-08 5.88e-08 9.10e-08 -------- 2.07e-07 --------   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    1.946    0.143    -      -           1.21e-03 1.10e-04   45.290 57
CPL   1.187    0.630      44.2   14.5      3.31e-03 3.30e-03   40.070 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.784    0.454    -      -           5.49e-03 1.51e-03   54.620 57
CPL   1.608    1.549      90.3    0.0      6.99e-03 0.00e+00   54.690 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: 166.656000 sec.
T50 in the 50-300 keV band: 138.432000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  181.116    0.552  181.668
T90   164.132    4.488  168.620
T50   122.816   35.376  158.192
Peak    1.000   42.708   43.708

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  286.9011 -16.4143 0.0116   20.4 -150.3       2.0427    16.5  TRIG_00755354       
------------------------------------------
 
Foreground time interval of the image:
  0.552  60.549 (delta_t =  59.997 [sec])
Background time interval of the image:
-239.352   0.552 (delta_t = 239.904 [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    0.552 sec. to  181.668 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.94633     ( -0.140733   0.144897 )
Norm@50keV  : 1.20882E-03    ( -0.00011123   0.00010974 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.29 using 59 PHA bins.
# Reduced chi-squared =         0.7945 for     57 degrees of freedom 
# Null hypothesis probability =   8.684827e-01
 
Photon flux (15-150 keV)    in 181.1 sec: 0.176992 ( -0.0132621  0.0132698 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.01439e-06 ( -1.77706e-07  1.80893e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.552 sec. to  181.668 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.18731     ( -0.67907   0.580971 )
Epeak [keV] : 44.2177      ( -9.92227 19.0029 )
Norm@50keV  : 3.30888E-03    ( -0.00174988   0.00484456 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.07 using 59 PHA bins.
# Reduced chi-squared =         0.7156 for     56 degrees of freedom 
# Null hypothesis probability =   9.466097e-01
 
Photon flux (15-150 keV)    in 181.1 sec: 0.170549 ( -0.013993  0.014033 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.84505e-06 ( -2.0258e-07  2.14929e-07 ) ergs/cm2
 
Band function
Time interval is from    0.552 sec. to  181.668 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.18703   ( -0.583656   0.685557 )
beta        : -10.0000    ( 10   1.77636e-15 )
Epeak [keV] : 44.2085      ( -9.90962 19.003 )
Norm@50keV   : 3.30976E-03    ( -0.00187573   0.00485636 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.07 using 59 PHA bins.
# Reduced chi-squared =         0.7286 for     55 degrees of freedom 
# Null hypothesis probability =   9.347709e-01
 
Photon flux (15-150 keV)    in 181.1 sec: 0.171575 ( 6.82843  -0.01514 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.847e-06 ( -1.84573e-06  -2.06871e-07 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.0789  (-0.906249  1.01373)
R^2/D10^2   : 7.85530E-02  (-0.0242395   0.0346536)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.81 using 59 PHA bins.
# Reduced chi-squared =          1.207 for     57 degrees of freedom 
# Null hypothesis probability =   1.359126e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.951e-07   3.930e-08
25- 50  7.419e-07   6.737e-08
50-150  3.961e-07   8.774e-08
15-150  1.433e-06   1.353e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 70.1357       (-15.171      22.5638)
Norm        : 0.866203       (-0.10276     0.120795)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.14 using 59 PHA bins.
# Reduced chi-squared =         0.7041 for     57 degrees of freedom 
# Null hypothesis probability =   9.559201e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.025e-07   4.147e-08
25- 50  6.408e-07   5.170e-08
50-150  8.242e-07   1.596e-07
15-150  1.868e-06   1.978e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.89253        (-1.10317      1.22759)
R1^2/D10^2  : 0.415272        (-0.19917      0.464231)
kT2 [keV]   : 18.6328        (-3.79965      6.35024)
R2^2/D10^2  : 5.28600E-03    (-0.00364239   0.00838115)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.41 using 59 PHA bins.
# Reduced chi-squared =         0.6619 for     55 degrees of freedom 
# Null hypothesis probability =   9.749459e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.037e-07   1.234e-07
25- 50  6.359e-07   2.094e-07
50-150  8.204e-07   4.383e-07
15-150  1.860e-06   6.669e-07

Peak spectrum fit

Power-law model
Time interval is from   42.708 sec. to   43.708 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.78423     ( -0.443591   0.46435 )
Norm@50keV  : 5.49275E-03    ( -0.00153851   0.00147386 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.62 using 59 PHA bins.
# Reduced chi-squared =         0.9583 for     57 degrees of freedom 
# Null hypothesis probability =   5.648060e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.752312 ( -0.177004  0.177249 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.05974e-08 ( -1.39089e-08  1.4655e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   42.708 sec. to   43.708 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.60776     ( -2.39445   0.702988 )
Epeak [keV] : 90.2562      (   )
Norm@50keV  : 6.98821E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.69 using 59 PHA bins.
# Reduced chi-squared =         0.9765 for     56 degrees of freedom 
# Null hypothesis probability =   5.246990e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.752036 ( -0.17967  0.177127 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.08273e-08 ( -1.72764e-08  1.42028e-08 ) ergs/cm2
 
Band function
Time interval is from   42.708 sec. to   43.708 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.95671   ( -4.95671   -4.95671 )
beta        : -2.09808    ( -1.02245   0.593906 )
Epeak [keV] : 25.9603      ( -25.9603 7.49159 )
Norm@50keV   : 587.090    ( -135.225   6.0605e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.11 using 59 PHA bins.
# Reduced chi-squared =         0.9656 for     55 degrees of freedom 
# Null hypothesis probability =   5.472438e-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]    : 9.47032  (-2.35453  3.61039)
R^2/D10^2   : 0.428461  (-0.304224   0.875248)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.53 using 59 PHA bins.
# Reduced chi-squared =          1.027 for     57 degrees of freedom 
# Null hypothesis probability =   4.191849e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.664e-09   3.465e-09
25- 50  1.761e-08   8.718e-09
50-150  7.833e-09   5.130e-09
15-150  3.310e-08   2.009e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 95.4238       (-55.0154      -95.4297)
Norm        : 3.34464       (-0.971287     1.67113)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.88 using 59 PHA bins.
# Reduced chi-squared =         0.9629 for     57 degrees of freedom 
# Null hypothesis probability =   5.548611e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.738e-09   5.335e-09
25- 50  1.497e-08   9.140e-09
50-150  2.360e-08   1.858e-08
15-150  4.731e-08   3.110e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.41973        (-2.56514      2.8672)
R1^2/D10^2  : 0.962943        (-0.666745      3.32039)
kT2 [keV]   : 71.3248        (-64.1403      -80.4718)
R2^2/D10^2  : 5.39095E-04    (-0.000382053   0.0371746)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.32 using 59 PHA bins.
# Reduced chi-squared =         0.9512 for     55 degrees of freedom 
# Null hypothesis probability =   5.777321e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.235e-09   5.415e-09
25- 50  1.551e-08   9.145e-09
50-150  3.102e-08   1.871e-08
15-150  5.576e-08   2.670e-08
Plot creation:
Thu Jun  1 12:02:33 EDT 2017