batgrbproduct analysis for trigger=965784

batgrbproduct Analysis for Trigger=965784

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.47
    Process Start Time (local time): Sun Apr 12 10:01:27 EDT 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger965784/GCN5_download_cron
======================================================================

  Trigger: 00965784      Segment: 000

  BAT Trigger Time: 608272167.208   [s; MET]
      Trigger Stop: 608272167.272   [s; MET]
               UTC: 2020-04-11T04:29:02.456120    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 47.6594073722997   Dec: -52.3144792843281  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.06
     Image Trigger?:     NO
     Rate S/N Ratio:     34.9714169000914  [ if not an image trigger ]
     Image S/N Ratio:    10.06

  Flight Position:   [ source = BAT ]
    RA: 47.6594073722997   Dec: -52.3144792843281  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 47.6941031097034   Dec: -52.3184087644893  [deg; J2000]  
        { 03h 10m 46.6s , -52d 19' 06.3" }
         +/- 1.62877091602703 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.8864110660548 [arcmin] (formal 1-sigma fit error)
    SNR: 15.1516953262241
 
  Angular difference between Flight and Ground position is 1.294226 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 0.327999949455261 +/- 0.104000054872973
        Measured from: -0.111999869346619
                   to: 0.216000080108643     [s; relative to TRIGTIME]
     T50: 0.123999953269958 +/- 0.0282842442734789
        Measured from: 0.0240001678466797
                   to: 0.148000121116638     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.437999963760376     
                   to: 0.562000036239624     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.127999901771545     
                   to: 0.248000025749207     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.026148   0.052572   0.054755   0.017423
           0.004862   0.005538   0.005363   0.004247 [error]
 Peak      0.030001   0.056486   0.054228   0.020372
           0.007081   0.007744   0.007126   0.006087 [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 6.53e-09 1.75e-08 3.78e-08 2.13e-07 1.02e-07 2.75e-07   erg/cm2
              Error 1.46e-09 2.40e-09 4.69e-09 5.90e-08 1.27e-08 6.16e-08   erg/cm2
Peak flux Power-law 2.41e-01 3.34e-01 3.41e-01 6.36e-01 1.12e+00 1.55e+00   ph/cm2/s
              Error 7.20e-02 6.09e-02 5.41e-02 2.20e-01 1.66e-01 2.55e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.52e-09 1.88e-08 4.10e-08 7.78e-08 9.73e-08 1.43e-07   erg/cm2
              Error 1.72e-09 2.89e-09 5.72e-09 8.44e-08 1.39e-08 8.39e-08   erg/cm2
Peak flux Cutoff-PL 2.28e-01 3.41e-01 3.52e-01 4.67e-01 1.11e+00 1.39e+00   ph/cm2/s
              Error 8.35e-02 6.77e-02 6.43e-02 3.25e-01 1.70e-01 3.73e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   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    0.888    0.187    -      -           2.40e-02 2.77e-03   76.210 57
CPL   0.086    0.852     131.3  684.5      5.69e-02 6.18e-02   73.010 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.969    0.254    -      -           9.74e-03 1.43e-03   55.670 57
CPL   0.699    0.794     263.1    0.0      1.31e-02 1.61e-02   55.430 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: 0.192000 sec.
T50 in the 50-300 keV band: 0.064000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.376   -0.128    0.248
T90     0.328   -0.112    0.216
T50     0.124    0.024    0.148
Peak    1.000   -0.438    0.562

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   47.6941 -52.3184 0.0128    8.3 -161.8       0.1494    15.2  TRIG_00965784       
------------------------------------------
 
Foreground time interval of the image:
 -0.128   0.248 (delta_t =   0.376 [sec])
Background time interval of the image:
-239.208  -0.128 (delta_t = 239.080 [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   -0.128 sec. to    0.248 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.887630     ( -0.191143   0.183766 )
Norm@50keV  : 2.40404E-02    ( -0.00277006   0.00276006 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          76.21 using 59 PHA bins.
# Reduced chi-squared =          1.337 for     57 degrees of freedom 
# Null hypothesis probability =   4.550138e-02
 
Photon flux (15-150 keV)    in 0.376 sec: 2.75911 ( -0.317309  0.317701 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.01934e-07 ( -1.26132e-08  1.27047e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.128 sec. to    0.248 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 8.60922E-02     ( -0.936694   0.766402 )
Epeak [keV] : 131.328      ( -44.2662 1324.67 )
Norm@50keV  : 5.69446E-02    ( -0.0315395   0.0920088 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.01 using 59 PHA bins.
# Reduced chi-squared =          1.304 for     56 degrees of freedom 
# Null hypothesis probability =   6.303894e-02
 
Photon flux (15-150 keV)    in 0.376 sec: 2.69752 ( -0.32438  0.32396 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.73351e-08 ( -1.40116e-08  1.37939e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.128 sec. to    0.248 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.00000   ( -4.75055   -5 )
beta        : -1.15110    ( -0.336279   0.251297 )
Epeak [keV] : 36.6785      ( -9.02087 7.71137 )
Norm@50keV   : 186.879    ( -20.7676   705.446 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.13 using 59 PHA bins.
# Reduced chi-squared =          1.257 for     55 degrees of freedom 
# Null hypothesis probability =   9.527293e-02
 
Photon flux (15-150 keV)    in 0.376 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]    : 21.6330  (-3.03629  3.77401)
R^2/D10^2   : 0.108788  (-0.0426725   0.0660286)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          79.20 using 59 PHA bins.
# Reduced chi-squared =          1.390 for     57 degrees of freedom 
# Null hypothesis probability =   2.752002e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.570e-09   7.825e-10
25- 50  1.869e-08   3.476e-09
50-150  6.530e-08   1.284e-08
15-150  8.756e-08   1.498e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-21.7594      -200)
Norm        : 10.6501       (-1.30009     1.30009)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         106.63 using 59 PHA bins.
# Reduced chi-squared =         1.8707 for     57 degrees of freedom 
# Null hypothesis probability =   7.495150e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.967e-09   5.544e-09
25- 50  1.917e-08   1.054e-08
50-150  4.205e-08   2.331e-08
15-150  7.119e-08   3.929e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 13.8401        (-6.71196      5.09846)
R1^2/D10^2  : 0.308720        (-0.167476      1.01377)
kT2 [keV]   : 70.4587        (-70.5275      -70.5276)
R2^2/D10^2  : 2.65848E-03    (-0.00209145   0.0562807)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.08 using 59 PHA bins.
# Reduced chi-squared =          1.292 for     55 degrees of freedom 
# Null hypothesis probability =   7.115772e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.111e-09   2.520e-09
25- 50  2.045e-08   1.030e-08
50-150  7.273e-08   3.710e-08
15-150  9.829e-08   4.689e-08

Peak spectrum fit

Power-law model
Time interval is from   -0.438 sec. to    0.562 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.968673     ( -0.260944   0.247469 )
Norm@50keV  : 9.73707E-03    ( -0.00143366   0.00142779 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.67 using 59 PHA bins.
# Reduced chi-squared =         0.9767 for     57 degrees of freedom 
# Null hypothesis probability =   5.249935e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.11943 ( -0.166293  0.166628 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.06488e-07 ( -1.69735e-08  1.71399e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.438 sec. to    0.562 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.699161     ( -1.09594   0.491353 )
Epeak [keV] : 263.111      ( -263.122 -263.122 )
Norm@50keV  : 1.30624E-02    ( -0.00459189   0.0275613 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.43 using 59 PHA bins.
# Reduced chi-squared =         0.9898 for     56 degrees of freedom 
# Null hypothesis probability =   4.964764e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.10939 ( -0.170075  0.16997 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.04708e-07 ( -1.8567e-08  1.8184e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.438 sec. to    0.562 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.91516   ( -4.91516   -4.91516 )
beta        : -1.16687    ( -0.363063   0.324025 )
Epeak [keV] : 33.4968      ( -33.4968 8.85255 )
Norm@50keV   : 114.426    ( -16.4358   1.48689e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.27 using 59 PHA bins.
# Reduced chi-squared =         0.9686 for     55 degrees of freedom 
# Null hypothesis probability =   5.408597e-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]    : 21.4355  (-4.10809  5.5658)
R^2/D10^2   : 4.34562E-02  (-0.0221843   0.0420121)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.34 using 59 PHA bins.
# Reduced chi-squared =          1.111 for     57 degrees of freedom 
# Null hypothesis probability =   2.626779e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.739e-09   1.213e-09
25- 50  1.946e-08   4.715e-09
50-150  6.675e-08   2.030e-08
15-150  8.995e-08   2.109e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-36.823      -200)
Norm        : 4.47105       (-0.685952     0.685952)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.37 using 59 PHA bins.
# Reduced chi-squared =          1.217 for     57 degrees of freedom 
# Null hypothesis probability =   1.260892e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.114e-08   6.375e-09
25- 50  2.142e-08   1.231e-08
50-150  4.699e-08   2.652e-08
15-150  7.955e-08   4.473e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.96491        (-4.00673      6.18452)
R1^2/D10^2  : 0.306684        (-0.219449      1.04042)
kT2 [keV]   : 46.2793        (-23.5687      -46.2793)
R2^2/D10^2  : 3.54506E-03    (-0.00329237   0.0193991)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.94 using 59 PHA bins.
# Reduced chi-squared =         0.9807 for     55 degrees of freedom 
# Null hypothesis probability =   5.151201e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.074e-09   4.117e-09
25- 50  2.157e-08   1.163e-08
50-150  7.842e-08   4.130e-08
15-150  1.071e-07   5.450e-08
Plot creation:
Sun Apr 12 10:05:09 EDT 2020