batgrbproduct analysis for trigger=976692

batgrbproduct Analysis for Trigger=976692

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.47
    Process Start Time (local time): Tue Jun  9 20:39:23 EDT 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger976692/GCN5_download_cron
======================================================================

  Trigger: 00976692      Segment: 000

  BAT Trigger Time: 613330144   [s; MET]
      Trigger Stop: 613330208   [s; MET]
               UTC: 2020-06-08T17:28:38.919540    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 309.628863589921   Dec: -31.1682990251738  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.43
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    8.43

  Flight Position:   [ source = BAT ]
    RA: 309.628863589921   Dec: -31.1682990251738  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 309.627863837641   Dec: -31.1942708477675  [deg; J2000]  
        { 20h 38m 30.7s , -31d 11' 39.4" }
         +/- 2.25228724672332 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.975331259218946 [arcmin] (formal 1-sigma fit error)
    SNR: 9.53608527717122
 
  Angular difference between Flight and Ground position is 1.559154 arcmin
 
  Partial Coding Fraction: 0.5390625    [ including projection effects ]

  Duration
     T90: 119.167999863625 +/- 34.6561624389093
        Measured from: 20.5840001106262
                   to: 139.751999974251     [s; relative to TRIGTIME]
     T50: 50.9439998865128 +/- 16.2561259699168
        Measured from: 31.0800001621246
                   to: 82.0240000486374     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 70.2920000553131     
                   to: 71.2920000553131     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 18.0880000591278     
                   to: 147.944000005722     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.946612   1.081332   0.496163   0.087226
           0.117928   0.107734   0.090620   0.077767 [error]
 Peak      0.036626   0.031176   0.002959   0.019525
           0.010589   0.009419   0.008247   0.007061 [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 3.36e-07 4.43e-07 4.30e-07 7.43e-07 1.45e-06 1.95e-06   erg/cm2
              Error 5.73e-08 5.37e-08 8.53e-08 2.90e-07 2.02e-07 3.87e-07   erg/cm2
Peak flux Power-law 2.72e-01 2.22e-01 1.23e-01 9.99e-02 6.62e-01 7.18e-01   ph/cm2/s
              Error 1.71e-01 8.52e-02 9.79e-02 1.46e-01 2.53e-01 2.68e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.97e-07 5.19e-07 3.86e-07 9.77e-08 1.28e-06 1.30e-06   erg/cm2
              Error 6.63e-08 7.75e-08 1.12e-07 -------- 2.14e-07 2.83e-07   erg/cm2
Peak flux Cutoff-PL 2.76e-01 2.23e-01 1.21e-01 9.58e-02 6.64e-01 7.16e-01   ph/cm2/s
              Error 1.70e-01 8.11e-02 7.20e-02 1.45e-01 2.53e-01 2.67e-01   ph/cm2/s
 
Fluence        Band 2.93e-07 5.20e-07 3.79e-07 2.13e-07 1.30e-06 1.41e-06   erg/cm2
              Error 6.59e-08 6.85e-08 -------- 4.95e-07 -------- --------   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    2.045    0.217    -      -           1.21e-03 1.78e-04   74.480 57
CPL   0.571    1.245      39.2    8.9      8.78e-03 2.94e-02   68.710 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.855    0.843    -      -           4.70e-03 2.09e-03   66.980 57
CPL   2.409    1.796     148.3    0.0      2.44e-03 0.00e+00   66.700 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: 35.008000 sec.
T50 in the 50-300 keV band: 8.512000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  129.856   18.088  147.944
T90   119.168   20.584  139.752
T50    50.944   31.080   82.024
Peak    1.000   70.292   71.292

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  309.6279 -31.1943 0.0201   35.7 -145.3       2.3320     9.5  TRIG_00976692       
------------------------------------------
 
Foreground time interval of the image:
 18.088 147.944 (delta_t = 129.856 [sec])
Background time interval of the image:
-239.000 -56.880 (delta_t = 182.120 [sec])
-56.000  18.088 (delta_t =  74.088 [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   18.088 sec. to  147.944 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.04510     ( -0.211653   0.222748 )
Norm@50keV  : 1.21027E-03    ( -0.000179797   0.00017645 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.48 using 59 PHA bins.
# Reduced chi-squared =          1.307 for     57 degrees of freedom 
# Null hypothesis probability =   5.989193e-02
 
Photon flux (15-150 keV)    in 129.9 sec: 0.185410 ( -0.0226352  0.0226612 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.45389e-06 ( -1.99625e-07  2.03505e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   18.088 sec. to  147.944 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.570947     ( -1.40427   1.08645 )
Epeak [keV] : 39.2482      ( -6.96402 10.8605 )
Norm@50keV  : 8.77603E-03    ( -0.00877605   0.0500846 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.71 using 59 PHA bins.
# Reduced chi-squared =          1.227 for     56 degrees of freedom 
# Null hypothesis probability =   1.184658e-01
 
Photon flux (15-150 keV)    in 129.9 sec: 0.175968 ( -0.02346  0.023588 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.28143e-06 ( -2.01653e-07  2.25848e-07 ) ergs/cm2
 
Band function
Time interval is from   18.088 sec. to  147.944 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.712968   ( -0.938293   0.673103 )
beta        : -3.12433    ( 3.24276   1.1113 )
Epeak [keV] : 39.1099      ( -15.5637 9.74768 )
Norm@50keV   : 7.25206E-03    ( -0.00612384   77.1176 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.60 using 59 PHA bins.
# Reduced chi-squared =          1.247 for     55 degrees of freedom 
# Null hypothesis probability =   1.028699e-01
 
Photon flux (15-150 keV)    in 129.9 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.30491e-06 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.0008  (-1.21523  1.38028)
R^2/D10^2   : 8.76169E-02  (-0.0349233   0.0580401)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.41 using 59 PHA bins.
# Reduced chi-squared =          1.305 for     57 degrees of freedom 
# Null hypothesis probability =   6.056473e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.318e-07   4.306e-08
25- 50  5.765e-07   9.022e-08
50-150  3.010e-07   9.723e-08
15-150  1.109e-06   1.700e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 58.9568       (-16.4408      27.1345)
Norm        : 0.987757       (-0.186129     0.223739)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.87 using 59 PHA bins.
# Reduced chi-squared =          1.226 for     57 degrees of freedom 
# Null hypothesis probability =   1.177279e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.215e-07   5.254e-08
25- 50  4.867e-07   6.937e-08
50-150  5.458e-07   1.660e-07
15-150  1.354e-06   2.387e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.18731        (-2.41888      94.5396)
R1^2/D10^2  : 0.544515        (-0.430423      6.61125)
kT2 [keV]   : 13.5077        (-3.18353      84.154)
R2^2/D10^2  : 2.05385E-02    (-0.0203132   0.0514045)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.47 using 59 PHA bins.
# Reduced chi-squared =          1.245 for     55 degrees of freedom 
# Null hypothesis probability =   1.048058e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.019e-07   1.610e-07
25- 50  5.118e-07   2.556e-07
50-150  4.428e-07   2.725e-07
15-150  1.257e-06   6.618e-07

Peak spectrum fit

Power-law model
Time interval is from   70.292 sec. to   71.292 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.85542     ( -0.822515   0.862654 )
Norm@50keV  : 4.70215E-03    ( -0.00219362   0.00198693 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.98 using 59 PHA bins.
# Reduced chi-squared =          1.175 for     57 degrees of freedom 
# Null hypothesis probability =   1.719366e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.662398 ( -0.252872  0.253795 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.32324e-08 ( -1.83288e-08  1.96133e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   70.292 sec. to   71.292 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.40853     ( -3.45466   0.138324 )
Epeak [keV] : 148.289      (   )
Norm@50keV  : 2.44274E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.70 using 59 PHA bins.
# Reduced chi-squared =          1.191 for     56 degrees of freedom 
# Null hypothesis probability =   1.549521e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.663524 ( -0.252693  0.252382 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.27164e-08 ( -1.0234e-08  1.92355e-08 ) ergs/cm2
 
Band function
Time interval is from   70.292 sec. to   71.292 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.97514   ( -4.97514   -4.97514 )
beta        : -2.00257    ( -1.52092   0.880856 )
Epeak [keV] : 22.3295      ( -22.3295 63.14 )
Norm@50keV   : 1395.53    ( -513.692   1.10111e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.47 using 59 PHA bins.
# Reduced chi-squared =          1.209 for     55 degrees of freedom 
# Null hypothesis probability =   1.381571e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.59646e-08 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 9.36894  (-4.12798  7.11588)
R^2/D10^2   : 0.375178  (-0.368316   3.53695)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.78 using 59 PHA bins.
# Reduced chi-squared =          1.224 for     57 degrees of freedom 
# Null hypothesis probability =   1.191344e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.537e-09   4.204e-09
25- 50  1.478e-08   9.300e-09
50-150  6.366e-09   5.180e-09
15-150  2.768e-08   1.803e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 92.6475       (-93.3127      -93.3127)
Norm        : 2.90558       (-1.30054     4.1247)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.64 using 59 PHA bins.
# Reduced chi-squared =          1.187 for     57 degrees of freedom 
# Null hypothesis probability =   1.581478e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.587e-09   4.827e-09
25- 50  1.291e-08   8.155e-09
50-150  2.001e-08   1.697e-08
15-150  4.051e-08   2.852e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.73513        (-2.39976      3.82236)
R1^2/D10^2  : 1.25464        (-1.12219      2.078)
kT2 [keV]   : 197.003        (-172.835      -197.769)
R2^2/D10^2  : 1.12054E-04    (-7.33513e-05   0.00738078)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.49 using 59 PHA bins.
# Reduced chi-squared =          1.173 for     55 degrees of freedom 
# Null hypothesis probability =   1.786728e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.910e-09   5.960e-09
25- 50  1.233e-08   7.570e-09
50-150  3.081e-08   5.330e-09
15-150  5.205e-08   1.545e-08
Plot creation:
Tue Jun  9 20:43:25 EDT 2020