batgrbproduct analysis for trigger=1061687

batgrbproduct Analysis for Trigger=1061687

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Tue Jul 27 18:22:32 EDT 2021
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1061687/GCN5_download_cron
======================================================================

  Trigger: 01061687      Segment: 000

  BAT Trigger Time: 649019971.136   [s; MET]
      Trigger Stop: 649019971.648   [s; MET]
               UTC: 2021-07-26T19:19:03.697060    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 193.341818919826   Dec: 19.1846373567284  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.71
     Image Trigger?:     NO
     Rate S/N Ratio:     13.4536240470737  [ if not an image trigger ]
     Image S/N Ratio:    6.71

  Flight Position:   [ source = BAT ]
    RA: 193.341818919826   Dec: 19.1846373567284  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 193.332914263174   Dec: 19.2108045545757  [deg; J2000]  
        { 12h 53m 19.9s , +19d 12' 38.9" }
         +/- 2.55032723911416 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.53762910075001 [arcmin] (formal 1-sigma fit error)
    SNR: 7.98485585909023
 
  Angular difference between Flight and Ground position is 1.649118 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 0.387999892234802 +/- 0.114402849786143
        Measured from: 0.0120000839233398
                   to: 0.399999976158142     [s; relative to TRIGTIME]
     T50: 0.184000015258789 +/- 0.079999995231632
        Measured from: 0.136000037193298
                   to: 0.320000052452087     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.287999987602234     
                   to: 0.712000012397766     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.00400006771087646     
                   to: 0.423999905586243     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.016356   0.029613   0.024374   0.004293
           0.005099   0.005614   0.005054   0.003859 [error]
 Peak      0.021708   0.032555   0.020015   0.006484
           0.007357   0.008071   0.007153   0.005736 [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 6.36e-09 1.14e-08 1.56e-08 4.46e-08 4.51e-08 7.80e-08   erg/cm2
              Error 3.04e-09 3.03e-09 4.57e-09 3.13e-08 1.09e-08 3.35e-08   erg/cm2
Peak flux Power-law 3.34e-01 2.50e-01 1.24e-01 8.82e-02 7.49e-01 7.96e-01   ph/cm2/s
              Error 2.15e-01 7.97e-02 6.16e-02 1.12e-01 2.58e-01 2.48e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.72e-09 1.15e-08 1.62e-08 2.90e-08 4.41e-08 6.24e-08   erg/cm2
              Error 3.69e-09 3.18e-09 5.29e-09 3.08e-08 1.21e-08 4.06e-08   erg/cm2
Peak flux Cutoff-PL 3.51e-01 2.51e-01 1.21e-01 7.97e-02 7.58e-01 8.04e-01   ph/cm2/s
              Error 2.25e-01 7.95e-02 6.20e-02 1.12e-01 2.64e-01 2.75e-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    1.542    0.473    -      -           1.12e-02 2.56e-03   57.120 53
CPL   1.168    1.867     128.0    0.0      1.62e-02 8.90e-02   57.020 52
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.007    0.797    -      -           4.98e-03 1.77e-03   46.400 53
CPL   2.419    2.097     156.1    0.0      3.36e-03 0.00e+00   46.230 52
 
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    0.428   -0.004    0.424
T90     0.388    0.012    0.400
T50     0.184    0.136    0.320
Peak    1.000   -0.288    0.712

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  193.3329 +19.2108 0.0238    2.1  -13.5       0.0777     8.0  TRIG_01061687       
------------------------------------------
 
Foreground time interval of the image:
 -0.004   0.424 (delta_t =   0.428 [sec])
Background time interval of the image:
-27.035  -0.004 (delta_t =  27.031 [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   -0.004 sec. to    0.424 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.54216     ( -0.455444   0.490019 )
Norm@50keV  : 1.11890E-02    ( -0.00256276   0.00255966 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.12 using 55 PHA bins.
# Reduced chi-squared =          1.078 for     53 degrees of freedom 
# Null hypothesis probability =   3.246399e-01
 
Photon flux (15-150 keV)    in 0.428 sec: 1.41326 ( -0.354411  0.370288 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.51343e-08 ( -1.08442e-08  1.10228e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.004 sec. to    0.424 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.16833     ( -2.42941   1.30415 )
Epeak [keV] : 128.029      ( -128.02 -128.02 )
Norm@50keV  : 1.62363E-02    ( -0.0162372   0.161835 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.02 using 55 PHA bins.
# Reduced chi-squared =          1.096 for     52 degrees of freedom 
# Null hypothesis probability =   2.939723e-01
 
Photon flux (15-150 keV)    in 0.428 sec: 1.36480 ( -0.399464  0.41618 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.40823e-08 ( -1.23708e-08  1.18308e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.004 sec. to    0.424 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.96941   ( -4.96941   -4.96941 )
beta        : -1.64721    ( -0.686879   0.509181 )
Epeak [keV] : 33.0550      ( -33.055 47.2676 )
Norm@50keV   : 188.617    ( -42.8692   1.05776e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.61 using 55 PHA bins.
# Reduced chi-squared =          1.110 for     51 degrees of freedom 
# Null hypothesis probability =   2.736659e-01
 
Photon flux (15-150 keV)    in 0.428 sec: 1.38288 (    ) 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]    : 17.3050  (-4.45784  6.02934)
R^2/D10^2   : 9.33305E-02  (-0.0600105   0.168522)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.11 using 55 PHA bins.
# Reduced chi-squared =          1.134 for     53 degrees of freedom 
# Null hypothesis probability =   2.338293e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.424e-09   1.182e-09
25- 50  1.088e-08   5.286e-09
50-150  2.339e-08   1.226e-08
15-150  3.669e-08   1.838e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-106.084      -199.363)
Norm        : 5.52516       (-1.15314     1.15314)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.888e-09   3.514e-09
25- 50  1.133e-08   6.623e-09
50-150  2.484e-08   1.461e-08
15-150  4.206e-08   2.478e-08
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.22970        (-3.66625      5.04466)
R1^2/D10^2  : 1.92063        (-1.62991      87.3647)
kT2 [keV]   : 24.0008        (-8.17313      41.0055)
R2^2/D10^2  : 2.53623E-02    (-0.0230033   0.0542544)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.575e-09   3.293e-09
25- 50  1.099e-08   5.870e-09
50-150  2.696e-08   1.609e-08
15-150  4.352e-08   2.279e-08

Peak spectrum fit

Power-law model
Time interval is from   -0.288 sec. to    0.712 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.00731     ( -0.698707   0.894556 )
Norm@50keV  : 4.97958E-03    ( -0.00187274   0.00166703 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.40 using 55 PHA bins.
# Reduced chi-squared =         0.8755 for     53 degrees of freedom 
# Null hypothesis probability =   7.271180e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.749471 ( -0.245001  0.270644 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.59382e-08 ( -1.45589e-08  1.53787e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.288 sec. to    0.712 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.41879     ( -2.91718   1.27733 )
Epeak [keV] : 156.096      (   )
Norm@50keV  : 3.36343E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.23 using 55 PHA bins.
# Reduced chi-squared =         0.8890 for     52 degrees of freedom 
# Null hypothesis probability =   6.992152e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.758326 ( -0.271445  0.256314 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.5885e-08 ( -8.3242e-09  1.4746e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.288 sec. to    0.712 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.50781   ( 1.51172   1.51172 )
beta        : -2.00259    ( 2.00625   0.69893 )
Epeak [keV] : 21.9705      ( -20.8697 -20.8697 )
Norm@50keV   : 1.22342E-02    ( -0.0126761   1.99519e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.40 using 55 PHA bins.
# Reduced chi-squared =         0.9098 for     51 degrees of freedom 
# Null hypothesis probability =   6.565860e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Single BB
 XSPEC: quit
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.8693  (-3.42726  5.4432)
R^2/D10^2   : 0.222791  (-0.221197   0.648382)
(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  5.486e-09   3.413e-09
25- 50  1.527e-08   9.135e-09
50-150  1.010e-08   6.958e-09
15-150  3.086e-08   1.829e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 145.004       (-95.6499      -141.351)
Norm        : 2.62609       (-0.758459     1.19422)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.763e-09   3.999e-09
25- 50  1.247e-08   7.415e-09
50-150  2.428e-08   1.571e-08
15-150  4.351e-08   2.628e-08
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.66970        (-4.52559      5.41786)
R1^2/D10^2  : 0.925325        (-0.72602      27.7847)
kT2 [keV]   : 24.8581        (-25.4      -28.0626)
R2^2/D10^2  : 7.42550E-03    (-0.00516671   0.152676)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.071e-09   4.386e-09
25- 50  1.233e-08   7.095e-09
50-150  2.182e-08   1.461e-08
15-150  4.122e-08   2.243e-08
Plot creation:
Tue Jul 27 18:29:00 EDT 2021