batgrbproduct analysis for trigger=846395

batgrbproduct Analysis for Trigger=846395

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Jul  7 11:44:31 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger846395/GCN5_download_cron
======================================================================

  Trigger: 00846395      Segment: 000

  BAT Trigger Time: 552558301.632   [s; MET]
      Trigger Stop: 552558303.68   [s; MET]
               UTC: 2018-07-06T08:24:40.412760    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 181.665199303239   Dec: 66.0347153838887  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.89
     Image Trigger?:     NO
     Rate S/N Ratio:     14.3527000944073  [ if not an image trigger ]
     Image S/N Ratio:    8.89

  Flight Position:   [ source = BAT ]
    RA: 181.665199303239   Dec: 66.0347153838887  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 181.681674712599   Dec: 66.0440665541218  [deg; J2000]  
        { 12h 06m 43.6s , +66d 02' 38.6" }
         +/- 1.05029882646938 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.298812672915144 [arcmin] (formal 1-sigma fit error)
    SNR: 28.3577264112023
 
  Angular difference between Flight and Ground position is 0.689899 arcmin
 
  Partial Coding Fraction: 0.8671875    [ including projection effects ]

  Duration
     T90: 42.3040000200272 +/- 7.29554847120756
        Measured from: -1.97199988365173
                   to: 40.3320001363754     [s; relative to TRIGTIME]
     T50: 20.6999999284744 +/- 10.6658064782344
        Measured from: 9.60800015926361
                   to: 30.308000087738     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 27.8240000009537     
                   to: 28.8240000009537     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -16.3119999170303     
                   to: 50.9919999837875     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.587053   1.738056   0.939154   0.167257
           0.052648   0.054043   0.045772   0.038269 [error]
 Peak      0.122394   0.150310   0.101321   0.015115
           0.007978   0.008511   0.007671   0.005062 [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 4.94e-07 7.10e-07 7.57e-07 1.50e-06 2.43e-06 3.46e-06   erg/cm2
              Error 3.34e-08 2.87e-08 4.64e-08 1.94e-07 1.06e-07 2.33e-07   erg/cm2
Peak flux Power-law 1.20e+00 1.08e+00 6.64e-01 6.21e-01 3.21e+00 3.56e+00   ph/cm2/s
              Error 1.25e-01 7.19e-02 6.11e-02 1.12e-01 2.12e-01 2.36e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.65e-07 7.36e-07 7.59e-07 8.03e-07 2.33e-06 2.76e-06   erg/cm2
              Error 4.03e-08 3.53e-08 4.92e-08 3.90e-07 1.28e-07 4.14e-07   erg/cm2
Peak flux Cutoff-PL 1.08e+00 1.15e+00 6.91e-01 2.98e-01 3.12e+00 3.23e+00   ph/cm2/s
              Error 1.48e-01 9.03e-02 6.91e-02 1.54e-01 2.20e-01 2.69e-01   ph/cm2/s
 
Fluence        Band 4.57e-07 7.36e-07 7.49e-07 1.06e-06 2.33e-06 3.01e-06   erg/cm2
              Error 4.16e-08 -------- -------- -------- 1.27e-07 --------   erg/cm2
Peak flux      Band 1.08e+00 1.16e+00 6.90e-01 3.54e-01 3.12e+00 3.28e+00   ph/cm2/s
              Error -------- 9.27e-02 -------- -------- 2.19e-01 --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.907    0.078    -      -           3.92e-03 1.73e-04   55.470 57
CPL   1.504    0.328      57.2   24.9      6.39e-03 2.59e-03   50.610 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.698    0.114    -      -           2.42e-02 1.73e-03   54.110 57
CPL   1.021    0.494      68.8   30.2      5.49e-02 3.53e-02   47.660 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: 36.480000 sec.
T50 in the 50-300 keV band: 7.168000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   67.304  -16.312   50.992
T90    42.304   -1.972   40.332
T50    20.700    9.608   30.308
Peak    1.000   27.824   28.824

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  181.6817 +66.0441 0.0068   20.9  153.3       2.2964    28.4  TRIG_00846395       
------------------------------------------
 
Foreground time interval of the image:
-16.312  26.769 (delta_t =  43.081 [sec])
Background time interval of the image:
-239.632 -16.312 (delta_t = 223.320 [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  -16.312 sec. to   50.992 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.90668     ( -0.0777356   0.0786935 )
Norm@50keV  : 3.92261E-03    ( -0.000173696   0.000172613 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.47 using 59 PHA bins.
# Reduced chi-squared =         0.9732 for     57 degrees of freedom 
# Null hypothesis probability =   5.325505e-01
 
Photon flux (15-150 keV)    in 67.3 sec: 0.564539 ( -0.0237626  0.0238252 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.42722e-06 ( -1.05924e-07  1.06454e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -16.312 sec. to   50.992 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.50419     ( -0.340782   0.314854 )
Epeak [keV] : 57.1503      ( -10.2411 39.624 )
Norm@50keV  : 6.39023E-03    ( -0.00198505   0.00320327 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.61 using 59 PHA bins.
# Reduced chi-squared =         0.9038 for     56 degrees of freedom 
# Null hypothesis probability =   6.781601e-01
 
Photon flux (15-150 keV)    in 67.3 sec: 0.549343 ( -0.026345  0.026392 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.33392e-06 ( -1.27318e-07  1.2787e-07 ) ergs/cm2
 
Band function
Time interval is from  -16.312 sec. to   50.992 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.45140   ( -0.344816   1.44738 )
beta        : -2.29886    ( 2.29174   0.347286 )
Epeak [keV] : 54.6270      ( -30.1015 34.594 )
Norm@50keV   : 6.86050E-03    ( -0.00212254   2.51234 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.25 using 59 PHA bins.
# Reduced chi-squared =         0.9137 for     55 degrees of freedom 
# Null hypothesis probability =   6.561903e-01
 
Photon flux (15-150 keV)    in 67.3 sec: 0.663405 ( 6.33659  -0.031097 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.33398e-06 ( -2.33351e-06  -1.26921e-07 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.8043  (  )
R^2/D10^2   : 0.134614  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         169.82 using 59 PHA bins.
# Reduced chi-squared =         2.9793 for     57 degrees of freedom 
# Null hypothesis probability =   3.788744e-13
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.666e-07   2.157e-08
25- 50  8.228e-07   3.836e-08
50-150  6.817e-07   6.690e-08
15-150  1.771e-06   7.369e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 85.4501       (-11.5392      14.6355)
Norm        : 2.54737       (-0.166002     0.181814)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.55 using 59 PHA bins.
# Reduced chi-squared =         0.9043 for     57 degrees of freedom 
# Null hypothesis probability =   6.790219e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.465e-07   2.907e-08
25- 50  7.464e-07   3.028e-08
50-150  1.100e-06   1.057e-07
15-150  2.293e-06   1.121e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.68254        (-0.835372      0.976035)
R1^2/D10^2  : 1.40838        (-0.611799      1.22228)
kT2 [keV]   : 19.0950        (-2.28354      3.31987)
R2^2/D10^2  : 1.69080E-02    (-0.00812187   0.0117523)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.73 using 59 PHA bins.
# Reduced chi-squared =         0.9952 for     55 degrees of freedom 
# Null hypothesis probability =   4.847325e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.559e-07   6.949e-08
25- 50  7.239e-07   7.393e-08
50-150  1.078e-06   1.551e-07
15-150  2.258e-06   2.843e-07

Peak spectrum fit

Power-law model
Time interval is from   27.824 sec. to   28.824 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.69840     ( -0.112332   0.114898 )
Norm@50keV  : 2.41515E-02    ( -0.00173352   0.00171866 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.11 using 59 PHA bins.
# Reduced chi-squared =         0.9492 for     57 degrees of freedom 
# Null hypothesis probability =   5.842966e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.20579 ( -0.212256  0.212373 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.23642e-07 ( -1.68251e-08  1.69531e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   27.824 sec. to   28.824 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.02143     ( -0.521791   0.465947 )
Epeak [keV] : 68.7969      ( -13.1566 47.2739 )
Norm@50keV  : 5.49029E-02    ( -0.0232709   0.0472913 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.66 using 59 PHA bins.
# Reduced chi-squared =         0.8511 for     56 degrees of freedom 
# Null hypothesis probability =   7.785236e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.12248 ( -0.22004  0.21978 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.13088e-07 ( -1.8376e-08  1.8503e-08 ) ergs/cm2
 
Band function
Time interval is from   27.824 sec. to   28.824 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.01083   ( -0.469832   0.911645 )
beta        : -2.58694    ( 2.55972   0.729259 )
Epeak [keV] : 68.0285      ( -14.3075 46.8033 )
Norm@50keV   : 5.57615E-02    ( -0.0188004   0.193183 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.60 using 59 PHA bins.
# Reduced chi-squared =         0.8655 for     55 degrees of freedom 
# Null hypothesis probability =   7.503121e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.12036 ( 3.87964  -0.2197 ) 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]    : 13.1185  (-1.04038  1.11866)
R^2/D10^2   : 0.573081  (-0.146616   0.198374)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          88.46 using 59 PHA bins.
# Reduced chi-squared =          1.552 for     57 degrees of freedom 
# Null hypothesis probability =   4.774017e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.091e-08   2.355e-09
25- 50  7.274e-08   5.950e-09
50-150  7.956e-08   1.253e-08
15-150  1.732e-07   1.460e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 129.288       (-31.576      46.8994)
Norm        : 13.5309       (-1.05374     1.2391)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.48 using 59 PHA bins.
# Reduced chi-squared =         0.8506 for     57 degrees of freedom 
# Null hypothesis probability =   7.816532e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.512e-08   3.350e-09
25- 50  6.362e-08   6.630e-09
50-150  1.177e-07   3.855e-08
15-150  2.164e-07   4.550e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.48891        (-1.22313      1.55921)
R1^2/D10^2  : 7.47867        (-4.31992      12.6279)
kT2 [keV]   : 18.8909        (-2.60638      4.03851)
R2^2/D10^2  : 0.123790    (-0.068202   0.101966)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.96 using 59 PHA bins.
# Reduced chi-squared =         0.8537 for     55 degrees of freedom 
# Null hypothesis probability =   7.714295e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.474e-08   1.267e-08
25- 50  6.294e-08   1.410e-08
50-150  1.105e-07   2.853e-08
15-150  2.082e-07   4.890e-08
Plot creation:
Sat Jul  7 11:47:42 EDT 2018