batgrbproduct analysis for trigger=1080859

batgrbproduct Analysis for Trigger=1080859

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Sun Oct 24 20:41:07 EDT 2021
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1080859/GCN5_download_cron
======================================================================

  Trigger: 01080859      Segment: 000

  BAT Trigger Time: 656715980.096   [s; MET]
      Trigger Stop: 656715981.12   [s; MET]
               UTC: 2021-10-23T21:05:52.141400    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 170.3019869197   Dec: 39.1371095016785  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.67
     Image Trigger?:     NO
     Rate S/N Ratio:     12.4498995979887  [ if not an image trigger ]
     Image S/N Ratio:    9.67

  Flight Position:   [ source = BAT ]
    RA: 170.3019869197   Dec: 39.1371095016785  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 170.313644834466   Dec: 39.1329794169403  [deg; J2000]  
        { 11h 21m 15.3s , +39d 07' 58.7" }
         +/- 1.95925080620154 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.10248426391449 [arcmin] (formal 1-sigma fit error)
    SNR: 11.6371572436683
 
  Angular difference between Flight and Ground position is 0.596467 arcmin
 
  Partial Coding Fraction: 0.4882812    [ including projection effects ]

  Duration
     T90: 1.2960000038147 +/- 0.264877401530976
        Measured from: 0.064000129699707
                   to: 1.3600001335144     [s; relative to TRIGTIME]
     T50: 0.659999847412109 +/- 0.189652270373547
        Measured from: 0.372000217437744
                   to: 1.03200006484985     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.24400007724762     
                   to: 1.24400007724762     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0119999647140503     
                   to: 1.45200002193451     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.094357   0.124454   0.061336   0.010485
           0.013636   0.014562   0.012240   0.009329 [error]
 Peak      0.069667   0.109780   0.049401   0.008688
           0.011273   0.012261   0.010269   0.007664 [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 3.65e-08 5.06e-08 5.17e-08 9.65e-08 1.70e-07 2.35e-07   erg/cm2
              Error 7.14e-09 7.00e-09 1.15e-08 4.21e-08 2.71e-08 5.48e-08   erg/cm2
Peak flux Power-law 9.31e-01 7.43e-01 3.99e-01 3.13e-01 2.21e+00 2.39e+00   ph/cm2/s
              Error 1.91e-01 1.05e-01 8.21e-02 1.22e-01 3.14e-01 3.35e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.54e-08 5.34e-08 5.18e-08 4.96e-08 1.65e-07 1.90e-07   erg/cm2
              Error 7.67e-09 9.42e-09 1.27e-08 6.57e-08 2.96e-08 7.31e-08   erg/cm2
Peak flux Cutoff-PL 8.81e-01 7.99e-01 4.08e-01 1.57e-01 2.19e+00 2.24e+00   ph/cm2/s
              Error 2.09e-01 1.44e-01 6.87e-02 2.22e-01 3.16e-01 3.73e-01   ph/cm2/s
 
Fluence        Band 3.37e-08 5.72e-08 4.78e-08 6.67e-08 1.63e-07 2.06e-07   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 8.89e-01 7.89e-01 4.08e-01 1.78e-01 2.20e+00 2.26e+00   ph/cm2/s
              Error 2.07e-01 -------- -------- -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.967    0.244    -      -           1.26e-02 2.08e-03   40.000 57
CPL   1.573    0.882      47.0    0.0      2.11e-02 0.00e+00   39.420 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.895    0.238    -      -           1.55e-02 2.48e-03   48.600 57
CPL   1.337    1.033      52.3   -1.3      3.20e-02 8.19e-02   47.550 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    1.464   -0.012    1.452
T90     1.296    0.064    1.360
T50     0.660    0.372    1.032
Peak    1.000    0.244    1.244

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  170.3136 +39.1330 0.0165   41.9 -162.5       0.2907    11.6  TRIG_01080859       
------------------------------------------
 
Foreground time interval of the image:
 -0.012   1.452 (delta_t =   1.464 [sec])
Background time interval of the image:
-239.096 -184.776 (delta_t =  54.320 [sec])
-184.096  -0.012 (delta_t = 184.084 [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   -0.012 sec. to    1.452 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.96731     ( -0.235915   0.25243 )
Norm@50keV  : 1.25801E-02    ( -0.00210977   0.00205042 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.00 using 59 PHA bins.
# Reduced chi-squared =         0.7018 for     57 degrees of freedom 
# Null hypothesis probability =   9.573837e-01
 
Photon flux (15-150 keV)    in 1.464 sec: 1.85920 ( -0.259082  0.259209 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.69588e-07 ( -2.6942e-08  2.73411e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.012 sec. to    1.452 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.57311     ( -1.10947   0.655193 )
Epeak [keV] : 46.9737      (   )
Norm@50keV  : 2.11334E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.42 using 59 PHA bins.
# Reduced chi-squared =         0.7039 for     56 degrees of freedom 
# Null hypothesis probability =   9.545187e-01
 
Photon flux (15-150 keV)    in 1.464 sec: 1.84284 ( -0.26159  0.2616 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.6465e-07 ( -2.96527e-08  2.95084e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.012 sec. to    1.452 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.69002   ( -1.8322   1.10569 )
beta        : -9.37167    ( 9.37166   19.3717 )
Epeak [keV] : 48.4519      ( -26.2321 -48.45 )
Norm@50keV   : 1.81447E-02    ( -0.00705842   0.0356572 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.47 using 59 PHA bins.
# Reduced chi-squared =         0.7175 for     55 degrees of freedom 
# Null hypothesis probability =   9.434182e-01
 
Photon flux (15-150 keV)    in 1.464 sec: 1.85006 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.63278e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 9.29796  (-1.50201  1.89237)
R^2/D10^2   : 1.15756  (-0.589947   1.13371)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.14 using 59 PHA bins.
# Reduced chi-squared =         0.8973 for     57 degrees of freedom 
# Null hypothesis probability =   6.933611e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.898e-08   7.035e-09
25- 50  6.477e-08   1.361e-08
50-150  2.727e-08   1.088e-08
15-150  1.210e-07   2.437e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 72.1414       (-24.8449      48.0571)
Norm        : 9.10809       (-1.83579     2.30623)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.431e-08   6.178e-09
25- 50  5.504e-08   8.418e-09
50-150  7.227e-08   2.858e-08
15-150  1.616e-07   3.560e-08
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.70917        (-1.50212      1.66717)
R1^2/D10^2  : 3.27576        (-1.70168      4.26183)
kT2 [keV]   : 26.9395        (-10.6107      34.056)
R2^2/D10^2  : 1.20297E-02    (-0.00960818   0.0503937)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.524e-08   2.006e-08
25- 50  5.425e-08   2.907e-08
50-150  7.243e-08   4.534e-08
15-150  1.619e-07   8.222e-08

Peak spectrum fit

Power-law model
Time interval is from    0.244 sec. to    1.244 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.89529     ( -0.230931   0.244889 )
Norm@50keV  : 1.54599E-02    ( -0.00251328   0.00245438 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.60 using 59 PHA bins.
# Reduced chi-squared =         0.8526 for     57 degrees of freedom 
# Null hypothesis probability =   7.781747e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.21424 ( -0.313849  0.314059 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.42128e-07 ( -2.25351e-08  2.28091e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.244 sec. to    1.244 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.33661     ( -1.21833   0.846828 )
Epeak [keV] : 52.3468      ( -49.7742 -52.3483 )
Norm@50keV  : 3.20029E-02    ( -0.0320006   0.131744 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.55 using 59 PHA bins.
# Reduced chi-squared =         0.8491 for     56 degrees of freedom 
# Null hypothesis probability =   7.819584e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.19035 ( -0.31605  0.31659 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.36778e-07 ( -2.4874e-08  2.4642e-08 ) ergs/cm2
 
Band function
Time interval is from    0.244 sec. to    1.244 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.33725   ( -5.28981   0.997944 )
beta        : -10.0000    ( 10   1.77636e-15 )
Epeak [keV] : 52.3420      ( -18.7189 -52.342 )
Norm@50keV   : 3.19738E-02    ( -0.0148605   0.131817 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.55 using 59 PHA bins.
# Reduced chi-squared =         0.8645 for     55 degrees of freedom 
# Null hypothesis probability =   7.520621e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.19660 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.35935e-07 ( 0  0 ) ergs/cm2
 
Single BB
 XSPEC: quit
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.0341  (-1.58722  1.93247)
R^2/D10^2   : 1.05785  (-0.517567   0.977589)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.172e-08   5.505e-09
25- 50  5.425e-08   1.005e-08
50-150  2.859e-08   9.595e-09
15-150  1.046e-07   2.188e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 81.7319       (-28.7167      58.5416)
Norm        : 10.4577       (-1.91264     2.58307)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.717e-08   5.310e-09
25- 50  4.496e-08   7.480e-09
50-150  6.438e-08   3.085e-08
15-150  1.365e-07   3.325e-08
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.36749        (-1.66708      1.83678)
R1^2/D10^2  : 2.76639        (-1.41827      2.26973)
kT2 [keV]   : 29.6446        (-13.1278      72.3623)
R2^2/D10^2  : 1.02786E-02    (-0.00825363   0.0551228)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.678e-08   1.476e-08
25- 50  4.701e-08   2.531e-08
50-150  6.210e-08   3.772e-08
15-150  1.359e-07   7.023e-08
Plot creation:
Sun Oct 24 20:47:44 EDT 2021