batgrbproduct analysis for trigger=904394

batgrbproduct Analysis for Trigger=904394

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon May 20 12:13:16 EDT 2019
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger904394/GCN5_download_cron
======================================================================

  Trigger: 00904394      Segment: 000

  BAT Trigger Time: 579943562.368   [s; MET]
      Trigger Stop: 579943562.88   [s; MET]
               UTC: 2019-05-19T07:25:39.438900    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 114.764434750018   Dec: -38.8241293159876  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.76
     Image Trigger?:     NO
     Rate S/N Ratio:     45.0222167379617  [ if not an image trigger ]
     Image S/N Ratio:    6.76

  Flight Position:   [ source = BAT ]
    RA: 114.764434750018   Dec: -38.8241293159876  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 114.757740572394   Dec: -38.8129492848746  [deg; J2000]  
        { 07h 39m 01.9s , -38d 48' 46.6" }
         +/- 1.66568271151669 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.660289741719227 [arcmin] (formal 1-sigma fit error)
    SNR: 14.6743199069688
 
  Angular difference between Flight and Ground position is 0.740207 arcmin
 
  Partial Coding Fraction: 0.08105469    [ including projection effects ]

  Duration
     T90: 45.5839999914169 +/- 2.85630253194435
        Measured from: -42.0559998750687
                   to: 3.52800011634827     [s; relative to TRIGTIME]
     T50: 26.8159999847412 +/- 1.43108350559987
        Measured from: -26.8719998598099
                   to: -0.0559998750686646     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.212000012397766     
                   to: 0.787999987602234     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -56.9680000543594     
                   to: 14.7919999361038     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     8.376241  11.491105   7.770694   1.635358
           0.277555   0.304119   0.269258   0.192520 [error]
 Peak      0.484910   0.964768   0.858303   0.305594
           0.054710   0.072380   0.071786   0.043405 [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 3.18e-06 5.12e-06 6.24e-06 1.49e-05 1.88e-05 2.95e-05   erg/cm2
              Error 1.90e-07 1.83e-07 2.71e-07 1.40e-06 6.57e-07 1.60e-06   erg/cm2
Peak flux Power-law 6.14e+00 6.71e+00 5.22e+00 6.68e+00 2.06e+01 2.47e+01   ph/cm2/s
              Error 8.21e-01 6.01e-01 4.99e-01 1.20e+00 1.74e+00 2.09e+00   ph/cm2/s
 
Fluence   Cutoff-PL 2.93e-06 5.28e-06 6.43e-06 8.95e-06 1.84e-05 2.36e-05   erg/cm2
              Error 2.33e-07 2.10e-07 3.02e-07 2.64e-06 7.11e-07 2.70e-06   erg/cm2
Peak flux Cutoff-PL 5.07e+00 7.49e+00 6.05e+00 3.00e+00 2.06e+01 2.16e+01   ph/cm2/s
              Error 9.65e-01 7.51e-01 6.73e-01 1.24e+00 1.74e+00 2.05e+00   ph/cm2/s
 
Fluence        Band 2.82e-06 5.38e-06 6.21e-06 1.27e-05 1.83e-05 2.71e-05   erg/cm2
              Error 2.69e-07 -------- 3.53e-07 -------- 7.03e-07 --------   erg/cm2
Peak flux      Band 5.05e+00 7.50e+00 6.04e+00 3.49e+00 2.05e+01 2.21e+01   ph/cm2/s
              Error -------- 9.71e-01 -------- -------- 1.75e+00 --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.715    0.060    -      -           2.83e-02 9.58e-04   85.040 57
CPL   1.321    0.240      90.0   35.0      4.39e-02 1.16e-02   76.360 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.361    0.119    -      -           1.70e-01 1.42e-02   51.170 57
CPL   0.343    0.554      88.1   26.3      5.34e-01 3.51e-01   39.030 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: 43.072000 sec.
T50 in the 50-300 keV band: 20.992000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   71.760  -56.968   14.792
T90    45.584  -42.056    3.528
T50    26.816  -26.872   -0.056
Peak    1.000   -0.212    0.788

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  114.7577 -38.8129 0.0131   39.9  128.8      24.7625    14.7  TRIG_00904394       
------------------------------------------
 
Foreground time interval of the image:
-28.267  14.533 (delta_t =  42.800 [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
Time interval is from  -56.968 sec. to   14.792 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.71518     ( -0.0597713   0.0601339 )
Norm@50keV  : 2.83125E-02    ( -0.000958781   0.000957574 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          85.04 using 59 PHA bins.
# Reduced chi-squared =          1.492 for     57 degrees of freedom 
# Null hypothesis probability =   9.428312e-03
 
Photon flux (15-150 keV)    in 71.76 sec: 3.78038 ( -0.136756  0.137124 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.87896e-05 ( -6.56379e-07  6.57381e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -56.968 sec. to   14.792 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.32086     ( -0.246367   0.232779 )
Epeak [keV] : 90.0336      ( -16.6723 53.237 )
Norm@50keV  : 4.38940E-02    ( -0.0097718   0.0134247 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          76.36 using 59 PHA bins.
# Reduced chi-squared =          1.364 for     56 degrees of freedom 
# Null hypothesis probability =   3.659326e-02
 
Photon flux (15-150 keV)    in 71.76 sec: 3.68573 ( -0.14608  0.14658 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.83508e-05 ( -7.11931e-07  7.09922e-07 ) ergs/cm2
 
Band function
Time interval is from  -56.968 sec. to   14.792 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.32081   ( -0.17392   0.311775 )
beta        : -10.0000    ( 10   3.19744e-14 )
Epeak [keV] : 90.0151      ( -16.6541 53.0158 )
Norm@50keV   : 4.38900E-02    ( -0.00978667   0.0134282 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          76.36 using 59 PHA bins.
# Reduced chi-squared =          1.388 for     55 degrees of freedom 
# Null hypothesis probability =   2.991819e-02
 
Photon flux (15-150 keV)    in 71.76 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.83375e-05 ( -1.8337e-05  -7.02817e-07 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 14.3142  (  )
R^2/D10^2   : 0.470612  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         277.82 using 59 PHA bins.
# Reduced chi-squared =         4.8740 for     57 degrees of freedom 
# Null hypothesis probability =   8.584104e-31
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.458e-06   9.795e-08
25- 50  5.543e-06   2.293e-07
50-150  7.562e-06   5.120e-07
15-150  1.456e-05   5.705e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 141.630       (-21.1218      22.4935)
Norm        : 15.4694       (-0.641759     0.785348)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          76.46 using 59 PHA bins.
# Reduced chi-squared =          1.341 for     57 degrees of freedom 
# Null hypothesis probability =   4.363903e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.864e-06   1.826e-07
25- 50  5.264e-06   3.096e-07
50-150  1.014e-05   2.400e-06
15-150  1.827e-05   2.608e-06
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.35093        (-0.758418      0.787887)
R1^2/D10^2  : 3.57032        (-1.04784      1.66884)
kT2 [keV]   : 25.9593        (-2.7273      3.54324)
R2^2/D10^2  : 4.03087E-02    (-0.0154398   0.0218889)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.88 using 59 PHA bins.
# Reduced chi-squared =          1.343 for     55 degrees of freedom 
# Null hypothesis probability =   4.552033e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.665e-06   3.010e-07
25- 50  5.425e-06   4.410e-07
50-150  1.022e-05   1.173e-06
15-150  1.831e-05   1.618e-06

Peak spectrum fit

Power-law model
Time interval is from   -0.212 sec. to    0.788 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.36137     ( -0.118842   0.119828 )
Norm@50keV  : 0.170316    ( -0.0141602   0.0141506 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.17 using 59 PHA bins.
# Reduced chi-squared =         0.8977 for     57 degrees of freedom 
# Null hypothesis probability =   6.924932e-01
 
Photon flux (15-150 keV)    in 1 sec: 20.5668 ( -1.73459  1.7355 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.65924e-06 ( -1.4848e-07  1.48742e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.212 sec. to    0.788 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.342709     ( -0.587226   0.521229 )
Epeak [keV] : 88.1365      ( -15.5003 37.0051 )
Norm@50keV  : 0.534500    ( -0.231524   0.470936 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.03 using 59 PHA bins.
# Reduced chi-squared =         0.6969 for     56 degrees of freedom 
# Null hypothesis probability =   9.588575e-01
 
Photon flux (15-150 keV)    in 1 sec: 20.5611 ( -1.7379  1.7385 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.65134e-06 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from   -0.212 sec. to    0.788 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.375146   ( -0.488818   0.330263 )
beta        : -2.69512    ( 2.55717   10.4925 )
Epeak [keV] : 88.9801      ( -51.764 36.6654 )
Norm@50keV   : 0.516727    ( -0.194037   374.005 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.03 using 59 PHA bins.
# Reduced chi-squared =         0.7097 for     55 degrees of freedom 
# Null hypothesis probability =   9.490674e-01
 
Photon flux (15-150 keV)    in 1 sec: 20.5323 ( -13.5323  -1.7522 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.64562e-06 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 17.2643  (-1.5555  1.69122)
R^2/D10^2   : 1.65414  (-0.45652   0.624861)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.58 using 59 PHA bins.
# Reduced chi-squared =          1.028 for     57 degrees of freedom 
# Null hypothesis probability =   4.173289e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.998e-08   1.471e-08
25- 50  4.478e-07   4.700e-08
50-150  9.575e-07   1.423e-07
15-150  1.505e-06   1.490e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-24.738      -200)
Norm        : 86.2516       (-7.14707     7.14707)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.79 using 59 PHA bins.
# Reduced chi-squared =         0.9262 for     57 degrees of freedom 
# Null hypothesis probability =   6.335686e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.147e-07   2.005e-08
25- 50  4.131e-07   5.565e-08
50-150  9.059e-07   2.794e-07
15-150  1.534e-06   3.772e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.31331        (-2.51382      3.35948)
R1^2/D10^2  : 9.52795        (-5.49764      18.1948)
kT2 [keV]   : 25.2140        (-4.73287      12.2564)
R2^2/D10^2  : 0.336526    (-0.268166   0.452311)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.03 using 59 PHA bins.
# Reduced chi-squared =         0.6915 for     55 degrees of freedom 
# Null hypothesis probability =   9.605689e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.593e-07   7.425e-08
25- 50  4.394e-07   1.416e-07
50-150  1.061e-06   5.057e-07
15-150  1.659e-06   6.919e-07
Plot creation:
Mon May 20 12:18:17 EDT 2019