batgrbproduct analysis for trigger=748898

batgrbproduct Analysis for Trigger=748898

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Apr 20 16:21:42 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger748898/GCN5_download_cron
======================================================================

  Trigger: 00748898      Segment: 000

  BAT Trigger Time: 514301219.136   [s; MET]
      Trigger Stop: 514301220.16   [s; MET]
               UTC: 2017-04-19T13:26:40.202980    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 79.8660177495021   Dec: -21.4203767383782  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.66
     Image Trigger?:     NO
     Rate S/N Ratio:     11.5325625946708  [ if not an image trigger ]
     Image S/N Ratio:    7.66

  Flight Position:   [ source = BAT ]
    RA: 79.8660177495021   Dec: -21.4203767383782  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 79.85438986751   Dec: -21.432787364505  [deg; J2000]  
        { 05h 19m 25.1s , -21d 25' 58.0" }
         +/- 1.73209862500441 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.603058081757371 [arcmin] (formal 1-sigma fit error)
    SNR: 13.8771523365445
 
  Angular difference between Flight and Ground position is 0.988067 arcmin
 
  Partial Coding Fraction: 0.53125    [ including projection effects ]

  Duration
     T90: 8.17999994754791 +/- 1.99891970231214
        Measured from: -0.0839998722076416
                   to: 8.09600007534027     [s; relative to TRIGTIME]
     T50: 3.53599989414215 +/- 1.54130461418307
        Measured from: 0.760000169277191
                   to: 4.29600006341934     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.467999994754791     
                   to: 1.46799999475479     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.387999951839447     
                   to: 8.9200000166893     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.206047   0.222797   0.108099   0.032914
           0.024598   0.025926   0.022771   0.019631 [error]
 Peak      0.058420   0.061713   0.035033   0.011915
           0.008608   0.009231   0.008038   0.006480 [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 7.26e-08 9.51e-08 9.12e-08 1.56e-07 3.11e-07 4.14e-07   erg/cm2
              Error 1.33e-08 1.26e-08 2.16e-08 7.24e-08 4.94e-08 9.68e-08   erg/cm2
Peak flux Power-law 6.35e-01 4.96e-01 2.60e-01 1.98e-01 1.48e+00 1.59e+00   ph/cm2/s
              Error 1.45e-01 7.78e-02 6.59e-02 9.59e-02 2.33e-01 2.52e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.02e-08 9.97e-08 9.05e-08 8.06e-08 3.00e-07 3.41e-07   erg/cm2
              Error 1.48e-08 1.69e-08 2.35e-08 1.15e-07 5.49e-08 1.27e-07   erg/cm2
Peak flux Cutoff-PL 6.11e-01 5.20e-01 2.62e-01 1.19e-01 1.46e+00 1.51e+00   ph/cm2/s
              Error 1.67e-01 1.05e-01 7.15e-02 1.84e-01 2.41e-01 2.93e-01   ph/cm2/s
 
Fluence        Band 6.93e-08 9.92e-08 8.90e-08 8.82e-08 2.99e-07 3.49e-07   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    2.059    0.255    -      -           3.60e-03 6.18e-04   53.500 57
CPL   1.678    0.815      36.0    0.0      5.96e-03 0.00e+00   53.050 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.931    0.292    -      -           1.02e-02 1.96e-03   49.480 57
CPL   1.549    1.093      51.4    0.0      1.68e-02 0.00e+00   49.220 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: 1.856000 sec.
T50 in the 50-300 keV band: 0.960000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    9.308   -0.388    8.920
T90     8.180   -0.084    8.096
T50     3.536    0.760    4.296
Peak    1.000    0.468    1.468

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   79.8544 -21.4328 0.0139   40.1    5.0       0.6668    13.9  TRIG_00748898       
------------------------------------------
 
Foreground time interval of the image:
 -0.388   8.920 (delta_t =   9.308 [sec])
Background time interval of the image:
-239.136  -0.388 (delta_t = 238.748 [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   -0.388 sec. to    8.920 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.05938     ( -0.244145   0.266607 )
Norm@50keV  : 3.60386E-03    ( -0.000629328   0.000607659 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.50 using 59 PHA bins.
# Reduced chi-squared =         0.9385 for     57 degrees of freedom 
# Null hypothesis probability =   6.073194e-01
 
Photon flux (15-150 keV)    in 9.308 sec: 0.555877 ( -0.0728085  0.0728271 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.10556e-07 ( -4.87877e-08  4.99585e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.388 sec. to    8.920 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.67772     ( -1.18105   0.448245 )
Epeak [keV] : 35.9932      (   )
Norm@50keV  : 5.95909E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.05 using 59 PHA bins.
# Reduced chi-squared =         0.9473 for     56 degrees of freedom 
# Null hypothesis probability =   5.873312e-01
 
Photon flux (15-150 keV)    in 9.308 sec: 0.548483 ( -0.075163  0.075032 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.00426e-07 ( -5.40618e-08  5.56749e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.388 sec. to    8.920 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.67786   ( 1.93124   1.93124 )
beta        : -10.00000    ( 10   1.84741e-13 )
Epeak [keV] : 35.9837      ( -16.2673 -35.9837 )
Norm@50keV   : 5.95672E-03    ( -0.000776737   0.0226778 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.05 using 59 PHA bins.
# Reduced chi-squared =         0.9645 for     55 degrees of freedom 
# Null hypothesis probability =   5.495701e-01
 
Photon flux (15-150 keV)    in 9.308 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.98934e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 9.68559  (-1.52168  1.78835)
R^2/D10^2   : 0.288416  (-0.137301   0.26752)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.94 using 59 PHA bins.
# Reduced chi-squared =          1.157 for     57 degrees of freedom 
# Null hypothesis probability =   1.951469e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.069e-08   1.392e-08
25- 50  1.204e-07   2.287e-08
50-150  5.724e-08   2.008e-08
15-150  2.283e-07   4.612e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 62.3503       (-20.4028      36.984)
Norm        : 2.85707       (-0.576464     0.735322)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.37 using 59 PHA bins.
# Reduced chi-squared =         0.9363 for     57 degrees of freedom 
# Null hypothesis probability =   6.121413e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.724e-08   1.150e-08
25- 50  1.035e-07   1.587e-08
50-150  1.216e-07   4.574e-08
15-150  2.923e-07   6.115e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.39085        (-2.79305      2.56671)
R1^2/D10^2  : 1.90125        (-1.44001      50.7747)
kT2 [keV]   : 17.7691        (-6.1629      19.3652)
R2^2/D10^2  : 1.96395E-02    (-0.0182926   0.105026)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.98 using 59 PHA bins.
# Reduced chi-squared =         0.9815 for     55 degrees of freedom 
# Null hypothesis probability =   5.136031e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.922e-08   3.862e-08
25- 50  9.825e-08   5.008e-08
50-150  1.240e-07   7.256e-08
15-150  2.915e-07   1.510e-07

Peak spectrum fit

Power-law model
Time interval is from    0.468 sec. to    1.468 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.93117     ( -0.278894   0.30444 )
Norm@50keV  : 1.01883E-02    ( -0.00200011   0.00192498 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.48 using 59 PHA bins.
# Reduced chi-squared =         0.8681 for     57 degrees of freedom 
# Null hypothesis probability =   7.499814e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.48186 ( -0.233251  0.233319 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.37131e-08 ( -1.7439e-08  1.78342e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.468 sec. to    1.468 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.54923     ( -1.55462   0.630899 )
Epeak [keV] : 51.4150      (   )
Norm@50keV  : 1.67668E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.22 using 59 PHA bins.
# Reduced chi-squared =         0.8790 for     56 degrees of freedom 
# Null hypothesis probability =   7.272250e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.46450 ( -0.24178  0.23997 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.07275e-08 ( -1.91024e-08  1.99045e-08 ) ergs/cm2
 
Band function
Time interval is from    0.468 sec. to    1.468 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.35706   ( 1.28583   6.19989 )
beta        : -2.41438    ( 2.48364   0.809208 )
Epeak [keV] : 48.3123      ( -47.4294 67.2975 )
Norm@50keV   : 2.15175E-02    ( -0.0115891   3.05874e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.04 using 59 PHA bins.
# Reduced chi-squared =         0.8916 for     55 degrees of freedom 
# Null hypothesis probability =   7.005238e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.04344e-08 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.8944  (-1.93687  2.23901)
R^2/D10^2   : 0.509440  (-0.257643   0.548034)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.43 using 59 PHA bins.
# Reduced chi-squared =          1.008 for     57 degrees of freedom 
# Null hypothesis probability =   4.592124e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.261e-08   3.468e-09
25- 50  3.521e-08   8.695e-09
50-150  2.343e-08   9.385e-09
15-150  7.125e-08   1.693e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 76.7532       (-30.0354      69.9415)
Norm        : 7.07674       (-1.54242     2.02267)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.31 using 59 PHA bins.
# Reduced chi-squared =         0.8651 for     57 degrees of freedom 
# Null hypothesis probability =   7.555896e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.831e-08   3.910e-09
25- 50  2.984e-08   6.205e-09
50-150  4.094e-08   2.719e-08
15-150  8.909e-08   3.006e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.28461        (-2.49564      -4.28461)
R1^2/D10^2  : 10.5373        (-9.24554      1716.38)
kT2 [keV]   : 15.1312        (-3.97675      -15.1312)
R2^2/D10^2  : 0.119485    (-0.118821   0.187514)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.61 using 59 PHA bins.
# Reduced chi-squared =         0.9020 for     55 degrees of freedom 
# Null hypothesis probability =   6.799833e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.896e-08   1.044e-08
25- 50  2.870e-08   1.515e-08
50-150  3.593e-08   2.178e-08
15-150  8.359e-08   4.342e-08
Plot creation:
Thu Apr 20 16:48:30 EDT 2017