batgrbproduct analysis for trigger=1186302

batgrbproduct Analysis for Trigger=1186302

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Mon Aug 21 20:21:19 EDT 2023
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1186302/GCN5_download_cron
======================================================================

  Trigger: 01186302      Segment: 000

  BAT Trigger Time: 714254576   [s; MET]
      Trigger Stop: 714254664   [s; MET]
               UTC: 2023-08-20T20:02:24.138220    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 257.636398703993   Dec: -39.1007312585403  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.96
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    8.96

  Flight Position:   [ source = BAT ]
    RA: 257.636398703993   Dec: -39.1007312585403  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 257.661531222394   Dec: -39.0810346878741  [deg; J2000]  
        { 17h 10m 38.8s , -39d 04' 51.7" }
         +/- 3.00363873775013 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.70391425423916 [arcmin] (formal 1-sigma fit error)
    SNR: 6.32069053431923
 
  Angular difference between Flight and Ground position is 1.663266 arcmin
 
  Partial Coding Fraction: 0.765625    [ including projection effects ]

  Duration
     T90: 88 +/- 
        Measured from: 0
                   to: 88     [s; relative to TRIGTIME]
     T50: 88 +/- 
        Measured from: 0
                   to: 88     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 88 second)
        Measured from: 0     
                   to: 88     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 88     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.813035   0.673724   0.091912   0.001059
           0.089876   0.068446   0.054880   0.045906 [error]
 Peak      0.813035   0.673724   0.091912   0.001059
           0.089876   0.068446   0.054880   0.045906 [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 2.44e-07 1.50e-07 1.39e-07 7.27e-07 8.07e-07   erg/cm2
              Error 4.45e-08 3.55e-08 4.40e-08 7.66e-08 1.08e-07 1.46e-07   erg/cm2
Peak flux Power-law 1.03e-01 5.14e-02 1.57e-02 6.13e-03 1.74e-01 1.76e-01   ph/cm2/s
              Error 1.71e-02 7.22e-03 4.47e-03 3.16e-03 2.24e-02 2.26e-02   ph/cm2/s
 
Fluence   Cutoff-PL 2.48e-07 2.91e-07 6.06e-08 9.55e-10 6.01e-07 6.01e-07   erg/cm2
              Error 5.27e-08 4.91e-08 5.38e-08 1.29e-08 9.87e-08 9.94e-08   erg/cm2
Peak flux Cutoff-PL 9.09e-02 6.19e-02 7.14e-03 6.15e-05 1.60e-01 1.60e-01   ph/cm2/s
              Error 2.06e-02 1.03e-02 5.72e-03 7.33e-04 2.37e-02 2.37e-02   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    2.707    0.288    -      -           7.75e-04 1.67e-04   64.560 57
CPL   1.000    0.000      50.0    0.0      3.07e-03 0.00e+00   91.480 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.707    0.288    -      -           7.75e-04 1.67e-04   64.560 57
CPL   1.000    0.000      50.0    0.0      3.07e-03 0.00e+00   91.480 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   88.000    0.000   88.000
T90    88.000    0.000   88.000
T50    88.000    0.000   88.000
Peak   88.000    0.000   88.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  257.6615 -39.0810 0.0305   24.2  146.0       1.4832     6.3  TRIG_01186302       
------------------------------------------
 
Foreground time interval of the image:
  0.000  88.000 (delta_t =  88.000 [sec])
Background time interval of the image:

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    0.000 sec. to   88.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.70662     ( -0.275276   0.30059 )
Norm@50keV  : 7.74523E-04    ( -0.000166675   0.0001683 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.56 using 59 PHA bins.
# Reduced chi-squared =          1.133 for     57 degrees of freedom 
# Null hypothesis probability =   2.293610e-01
 
Photon flux (15-150 keV)    in 88 sec: 0.173622 ( -0.0223944  0.0224128 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.26761e-07 ( -1.06047e-07  1.09465e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   88.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 3.06819E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          91.48 using 59 PHA bins.
# Reduced chi-squared =          1.634 for     56 degrees of freedom 
# Null hypothesis probability =   1.936616e-03
 
Photon flux (15-150 keV)    in 88 sec: 0.160030 ( -0.023665  0.023751 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.00724e-07 ( -9.02299e-08  1.07197e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   88.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.578737   ( -3.0281   2.82811 )
beta        : -4.34554    ( 4.21914   1.19716 )
Epeak [keV] : 24.5911      ( -6.42758 3.82697 )
Norm@50keV   : 0.123334    ( -0.121365   27.6062 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.86 using 59 PHA bins.
# Reduced chi-squared =          1.052 for     55 degrees of freedom 
# Null hypothesis probability =   3.702682e-01
 
Photon flux (15-150 keV)    in 88 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]    : 6.74719  (-0.757276  0.847284)
R^2/D10^2   : 0.379729  (-0.155371   0.266591)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.78 using 59 PHA bins.
# Reduced chi-squared =          1.031 for     57 degrees of freedom 
# Null hypothesis probability =   4.101765e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.349e-07   5.601e-08
25- 50  2.992e-07   6.090e-08
50-150  4.332e-08   1.843e-08
15-150  5.774e-07   9.865e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 24.4704       (-5.63411      8.12562)
Norm        : 1.67996       (-0.449054     0.635933)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.670e-07   4.858e-08
25- 50  2.699e-07   5.148e-08
50-150  1.112e-07   5.496e-08
15-150  6.480e-07   1.049e-07
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 62.8540        (-61.1878      -61.1878)
R1^2/D10^2  : 3.44691E-05        (-3.52383e-05      0.490934)
kT2 [keV]   : 6.50792        (-6.50534      0.893615)
R2^2/D10^2  : 0.433438    (-0.182671   4.63802)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.483e-07   1.252e-07
25- 50  2.958e-07   1.565e-07
50-150  5.337e-08   3.323e-08
15-150  5.975e-07   2.800e-07

Peak spectrum fit

Power-law model
Time interval is from    0.000 sec. to   88.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.70662     ( -0.275276   0.30059 )
Norm@50keV  : 7.74523E-04    ( -0.000166675   0.0001683 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.56 using 59 PHA bins.
# Reduced chi-squared =          1.133 for     57 degrees of freedom 
# Null hypothesis probability =   2.293610e-01
 
Photon flux (15-150 keV)    in 88 sec: 0.173622 ( -0.0223944  0.0224128 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.26761e-07 ( -1.06047e-07  1.09465e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   88.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 3.06819E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          91.48 using 59 PHA bins.
# Reduced chi-squared =          1.634 for     56 degrees of freedom 
# Null hypothesis probability =   1.936616e-03
 
Photon flux (15-150 keV)    in 88 sec: 0.160030 ( -0.023665  0.023751 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.00724e-07 ( -9.02299e-08  1.07197e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   88.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.578737   ( -3.0281   2.82811 )
beta        : -4.34554    ( 4.21914   1.19716 )
Epeak [keV] : 24.5911      ( -6.42758 3.82697 )
Norm@50keV   : 0.123334    ( -0.121365   27.6062 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.86 using 59 PHA bins.
# Reduced chi-squared =          1.052 for     55 degrees of freedom 
# Null hypothesis probability =   3.702682e-01
 
Photon flux (15-150 keV)    in 88 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]    : 6.74719  (-0.757276  0.847284)
R^2/D10^2   : 0.379729  (-0.155371   0.266591)
(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  2.349e-07   5.333e-08
25- 50  2.992e-07   6.367e-08
50-150  4.332e-08   1.840e-08
15-150  5.774e-07   1.145e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 24.4704       (-5.63411      8.12562)
Norm        : 1.67996       (-0.449054     0.635933)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.670e-07   4.726e-08
25- 50  2.699e-07   5.302e-08
50-150  1.112e-07   5.328e-08
15-150  6.480e-07   1.145e-07
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 62.8540        (-61.1878      -61.1878)
R1^2/D10^2  : 3.44691E-05        (-3.52383e-05      0.490934)
kT2 [keV]   : 6.50792        (-6.50534      0.893615)
R2^2/D10^2  : 0.433438    (-0.182671   4.63802)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.483e-07   1.225e-07
25- 50  2.958e-07   1.641e-07
50-150  5.337e-08   3.347e-08
15-150  5.975e-07   2.996e-07
Plot creation:
Mon Aug 21 20:23:19 EDT 2023