batgrbproduct analysis for trigger=893808

batgrbproduct Analysis for Trigger=893808

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Mar 20 21:31:28 EDT 2019
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger893808/GCN5_download_cron
======================================================================

  Trigger: 00893808      Segment: 000

  BAT Trigger Time: 574737299.2   [s; MET]
      Trigger Stop: 574737307.392   [s; MET]
               UTC: 2019-03-20T01:14:36.601140    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 117.8105857429   Dec: -45.8897753307729  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.63
     Image Trigger?:     NO
     Rate S/N Ratio:     11.4455231422596  [ if not an image trigger ]
     Image S/N Ratio:    7.63

  Flight Position:   [ source = BAT ]
    RA: 117.8105857429   Dec: -45.8897753307729  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 117.822203772553   Dec: -45.8767559402986  [deg; J2000]  
        { 07h 51m 17.3s , -45d 52' 36.3" }
         +/- 1.89623665447653 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.753211808334368 [arcmin] (formal 1-sigma fit error)
    SNR: 12.1935184856297
 
  Angular difference between Flight and Ground position is 0.919613 arcmin
 
  Partial Coding Fraction: 0.296875    [ including projection effects ]

  Duration
     T90: 64 +/- 12.0830459735946
        Measured from: -24.1999999284744
                   to: 39.8000000715256     [s; relative to TRIGTIME]
     T50: 25 +/- 8.94427190999916
        Measured from: -13.1999999284744
                   to: 11.8000000715256     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.200000047683716     
                   to: 0.799999952316284     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -27.2000000476837     
                   to: 44.7999999523163     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.739746   1.133279   1.419318   0.494315
           0.144968   0.147799   0.127776   0.111956 [error]
 Peak      0.038870   0.035917   0.088145   0.017142
           0.018572   0.018278   0.016794   0.013434 [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 2.74e-07 5.92e-07 1.00e-06 3.91e-06 2.75e-06 5.78e-06   erg/cm2
              Error 6.50e-08 8.38e-08 1.19e-07 1.08e-06 3.09e-07 1.12e-06   erg/cm2
Peak flux Power-law 4.35e-01 4.39e-01 3.10e-01 3.49e-01 1.32e+00 1.53e+00   ph/cm2/s
              Error 2.76e-01 1.77e-01 1.25e-01 2.85e-01 5.00e-01 5.39e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.61e-07 5.96e-07 1.03e-06 3.23e-06 2.74e-06 5.12e-06   erg/cm2
              Error 8.08e-08 8.67e-08 1.45e-07 -------- 3.13e-07 1.75e-06   erg/cm2
Peak flux Cutoff-PL 5.98e-03 2.38e-01 5.89e-01 3.33e-02 8.66e-01 8.65e-01   ph/cm2/s
              Error 3.45e-02 1.41e-01 1.88e-01 -------- 2.72e-01 2.73e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 4.56e-02 3.40e-01 5.19e-01 7.28e-02 9.77e-01 9.82e-01   ph/cm2/s
              Error -------- 1.59e-01 -------- -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.238    0.198    -      -           3.81e-03 4.30e-04   59.760 57
CPL   1.070    0.677     340.2    0.0      4.48e-03 3.08e-03   59.610 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.499    0.606    -      -           1.06e-02 3.72e-03   70.400 57
CPL  -9.979    0.776      68.3    8.9      1.12e+02 2.19e+02   63.150 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: 30.080000 sec.
T50 in the 50-300 keV band: 18.560000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   72.000  -27.200   44.800
T90    64.000  -24.200   39.800
T50    25.000  -13.200   11.800
Peak    1.000   -0.200    0.800

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  117.8222 -45.8768 0.0157   49.8    3.7       4.0112    12.2  TRIG_00893808       
------------------------------------------
 
Foreground time interval of the image:
-27.200  44.800 (delta_t =  72.000 [sec])
Background time interval of the image:
-239.200 -27.200 (delta_t = 212.000 [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  -27.200 sec. to   44.800 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23774     ( -0.200738   0.194928 )
Norm@50keV  : 3.81051E-03    ( -0.000431676   0.00042847 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.76 using 59 PHA bins.
# Reduced chi-squared =          1.048 for     57 degrees of freedom 
# Null hypothesis probability =   3.757949e-01
 
Photon flux (15-150 keV)    in 72 sec: 0.449796 ( -0.0555171  0.0560439 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.75472e-06 ( -3.08652e-07  3.09172e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -27.200 sec. to   44.800 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.06994     ( -0.848185   0.506497 )
Epeak [keV] : 340.207      ( -340.204 -340.204 )
Norm@50keV  : 4.47648E-03    ( -0.00100384   0.00515151 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.61 using 59 PHA bins.
# Reduced chi-squared =          1.064 for     56 degrees of freedom 
# Null hypothesis probability =   3.457407e-01
 
Photon flux (15-150 keV)    in 72 sec: 0.445301 ( -0.058913  0.058599 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.74431e-06 ( -3.14842e-07  3.11573e-07 ) ergs/cm2
 
Band function
Time interval is from  -27.200 sec. to   44.800 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.07000   ( 0.956789   0.956789 )
beta        : -10.0000    ( 10   3.55271e-15 )
Epeak [keV] : 340.314      ( -188.407 -340.314 )
Norm@50keV   : 4.47564E-03    ( -0.000758892   0.00515254 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.61 using 59 PHA bins.
# Reduced chi-squared =          1.084 for     55 degrees of freedom 
# Null hypothesis probability =   3.116784e-01
 
Photon flux (15-150 keV)    in 72 sec: 0.433371 (    ) 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]    : 22.3896  (-2.94068  3.61753)
R^2/D10^2   : 1.40226E-02  (-0.00551783   0.00855827)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.68 using 59 PHA bins.
# Reduced chi-squared =          1.310 for     57 degrees of freedom 
# Null hypothesis probability =   5.804164e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.291e-08   2.366e-08
25- 50  4.964e-07   9.522e-08
50-150  1.859e-06   3.067e-07
15-150  2.449e-06   3.636e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-29.1675      -200)
Norm        : 1.95150       (-0.217809     0.217809)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.87 using 59 PHA bins.
# Reduced chi-squared =          1.208 for     57 degrees of freedom 
# Null hypothesis probability =   1.347025e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.498e-07   1.957e-07
25- 50  6.729e-07   3.701e-07
50-150  1.476e-06   7.151e-07
15-150  2.498e-06   1.283e-06
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.25587        (-1.64148      2.71281)
R1^2/D10^2  : 1.17914        (-0.956254      5.42408)
kT2 [keV]   : 27.8830        (-4.70545      7.66276)
R2^2/D10^2  : 6.26080E-03    (-0.0034547   0.00547959)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.67 using 59 PHA bins.
# Reduced chi-squared =          1.030 for     55 degrees of freedom 
# Null hypothesis probability =   4.125709e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.083e-07   1.622e-07
25- 50  5.275e-07   2.053e-07
50-150  1.938e-06   6.343e-07
15-150  2.774e-06   7.265e-07

Peak spectrum fit

Power-law model
Time interval is from   -0.200 sec. to    0.800 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.49873     ( -0.584403   0.626891 )
Norm@50keV  : 1.05937E-02    ( -0.00372504   0.00372284 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.40 using 59 PHA bins.
# Reduced chi-squared =          1.235 for     57 degrees of freedom 
# Null hypothesis probability =   1.094363e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.32205 ( -0.494302  0.506307 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.00518e-07 ( -3.65957e-08  3.68845e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.200 sec. to    0.800 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -9.97940     ( 9.98833   11.5413 )
Epeak [keV] : 68.2811      ( -8.50754 9.3235 )
Norm@50keV  : 111.855    ( -113.973   324.107 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.15 using 59 PHA bins.
# Reduced chi-squared =          1.128 for     56 degrees of freedom 
# Null hypothesis probability =   2.383935e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.865979 0.858354 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.43173e-15 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from   -0.200 sec. to    0.800 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.00000   ( -4.24962   -5 )
beta        : -9.37167    ( 9.37167   19.3643 )
Epeak [keV] : 71.4405      ( -11.9873 12.5609 )
Norm@50keV   : 2.23429    ( -0.699149   4.86395 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.08 using 59 PHA bins.
# Reduced chi-squared =          1.183 for     55 degrees of freedom 
# Null hypothesis probability =   1.659266e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.977381 (    ) 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]    : 19.1722  (-4.45351  6.57563)
R^2/D10^2   : 7.22431E-02  (-0.0733397   0.113174)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.12 using 59 PHA bins.
# Reduced chi-squared =          1.178 for     57 degrees of freedom 
# Null hypothesis probability =   1.688640e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.692e-08   1.133e-08
25- 50  1.105e-08   7.940e-09
50-150  4.493e-10   5.540e-10
15-150  2.842e-08   2.053e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.352       (-199.362      -199.362)
Norm        : 5.52684       (-1.9254     2.35446)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.02 using 59 PHA bins.
# Reduced chi-squared =          1.228 for     57 degrees of freedom 
# Null hypothesis probability =   1.153170e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.376e-08   8.550e-09
25- 50  2.647e-08   1.660e-08
50-150  5.806e-08   3.598e-08
15-150  9.830e-08   5.830e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.41188        (-1.99187      2.96236)
R1^2/D10^2  : 268.917        (-276.339      -277.094)
kT2 [keV]   : 20.1742        (-4.8548      7.7235)
R2^2/D10^2  : 5.74760E-02    (-0.0400144   0.0747166)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.15 using 59 PHA bins.
# Reduced chi-squared =          1.166 for     55 degrees of freedom 
# Null hypothesis probability =   1.864616e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.581e-08   9.770e-09
25- 50  2.323e-08   1.399e-08
50-150  6.801e-08   4.479e-08
15-150  1.070e-07   6.335e-08
Plot creation:
Wed Mar 20 21:35:59 EDT 2019