batgrbproduct analysis for trigger=1118357

batgrbproduct Analysis for Trigger=1118357

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Sun Jul 31 20:29:37 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1118357/batgroup_hand_proc
======================================================================

  Trigger: 01118357      Segment: 000

  BAT Trigger Time: 680888964.592   [s; MET]
      Trigger Stop: 680888964.656   [s; MET]
               UTC: 2022-07-30T15:48:55.003620    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 225.020886217671   Dec: -69.4969465256892  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10
     Image Trigger?:     NO
     Rate S/N Ratio:     55.937465083788  [ if not an image trigger ]
     Image S/N Ratio:    10

  Flight Position:   [ source = BAT ]
    RA: 225.020886217671   Dec: -69.4969465256892  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 224.988074451063   Dec: -69.4956917281265  [deg; J2000]  
        { 14h 59m 57.1s , -69d 29' 44.5" }
         +/- 1.69811084452184 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.515617280996671 [arcmin] (formal 1-sigma fit error)
    SNR: 14.2756362088088
 
  Angular difference between Flight and Ground position is 0.693672 arcmin
 
  Partial Coding Fraction: 0.6015625    [ including projection effects ]

  Duration
     T90: 0.191999793052673 +/- 0.202385803424389
        Measured from: -0.0399999618530273
                   to: 0.151999831199646     [s; relative to TRIGTIME]
     T50: 0.127999901771545 +/- 0.064
        Measured from: -0.0399999618530273
                   to: 0.0879999399185181     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.348000049591064     
                   to: 0.651999950408936     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0399999618530273     
                   to: 0.279999971389771     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.030887   0.048419   0.072809   0.042670
           0.006452   0.007171   0.007790   0.006687 [error]
 Peak      0.037302   0.061274   0.074701   0.041088
           0.010362   0.010372   0.010116   0.008591 [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 6.82e-09 2.18e-08 5.71e-08 4.35e-07 1.56e-07 5.21e-07   erg/cm2
              Error 2.28e-09 4.24e-09 6.79e-09 1.39e-07 1.92e-08 1.39e-07   erg/cm2
Peak flux Power-law 3.00e-01 4.56e-01 5.19e-01 1.13e+00 1.61e+00 2.40e+00   ph/cm2/s
              Error 1.18e-01 1.07e-01 7.72e-02 4.07e-01 2.64e-01 4.00e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.70e-09 2.16e-08 5.72e-08 4.07e-07 1.56e-07 4.92e-07   erg/cm2
              Error 2.21e-09 4.23e-09 6.79e-09 1.63e-07 1.91e-08 1.61e-07   erg/cm2
Peak flux Cutoff-PL 3.09e-01 4.63e-01 5.18e-01 1.09e+00 1.62e+00 2.38e+00   ph/cm2/s
              Error 1.20e-01 -------- 7.81e-02 4.65e-01 2.64e-01 4.68e-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    0.608    0.253    -      -           3.82e-02 5.50e-03   42.650 57
CPL   0.599    0.257    10000.0    0.0      3.85e-02 5.10e-03   42.720 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.814    0.306    -      -           1.40e-02 2.37e-03   52.890 57
CPL   0.812    0.309    9999.2    0.0      1.41e-02 5.62e-03   52.920 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    0.320   -0.040    0.280
T90     0.192   -0.040    0.152
T50     0.128   -0.040    0.088
Peak    1.000   -0.348    0.652

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  224.9881 -69.4957 0.0134   37.4 -155.4       0.1980    14.3  TRIG_01118357       
------------------------------------------
 
Foreground time interval of the image:
 -0.040   0.280 (delta_t =   0.320 [sec])
Background time interval of the image:
-239.592  -0.040 (delta_t = 239.552 [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   -0.040 sec. to    0.280 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.608331     ( -0.261668   0.245151 )
Norm@50keV  : 3.82023E-02    ( -0.00564013   0.00536654 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   42.65     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.21e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 0.32 sec: 4.45583 ( -0.572431  0.575082 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.55708e-07 ( -1.91858e-08  1.91613e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.040 sec. to    0.280 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.599445     ( -0.288128   0.226864 )
Epeak [keV] : 1.00000E+04      ( -10000 -10000 )
Norm@50keV  : 3.85154E-02    ( -0.00567292   0.00452111 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   42.72     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.04e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 0.32 sec: 4.45616 ( -0.57459  0.57252 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.56039e-07 ( -1.94541e-08  1.86909e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.040 sec. to    0.280 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.883091   ( 0.883151   0.883151 )
beta        : -0.608393    ( -0.245204   0.26209 )
Epeak [keV] : 12.7234      ( -12.7231 -12.7231 )
Norm@50keV   : 5.87982E-02    ( -0.0256452   0 )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in 0.32 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]    : 39.4959  (-7.74502  11.793)
R^2/D10^2   : 3.31519E-02  (-0.0157121   0.0259479)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   57.09     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.72e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.155e-09   6.510e-10
25- 50  1.464e-08   3.712e-09
50-150  1.378e-07   3.178e-08
15-150  1.546e-07   3.382e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-22.0894      -200)
Norm        : 17.9022       (-2.37793     2.37793)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   85.62     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.42e-03 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.427e-08   8.086e-09
25- 50  2.745e-08   1.522e-08
50-150  6.020e-08   3.374e-08
15-150  1.019e-07   5.725e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.67077        (-2.21898      3.22147)
R1^2/D10^2  : 7.72292        (-6.37412      46.6781)
kT2 [keV]   : 53.5550        (-14.0975      34.683)
R2^2/D10^2  : 1.48107E-02    (-0.00969117   0.0167935)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   36.21     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.76e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.110e-08   6.231e-09
25- 50  1.884e-08   8.069e-09
50-150  1.351e-07   6.535e-08
15-150  1.650e-07   6.352e-08

Peak spectrum fit

Power-law model
Time interval is from   -0.348 sec. to    0.652 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.813581     ( -0.318431   0.294031 )
Norm@50keV  : 1.40278E-02    ( -0.00241914   0.00231402 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   52.89     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.30e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.61154 ( -0.26236  0.264991 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.63001e-07 ( -2.48821e-08  2.49689e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.348 sec. to    0.652 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.812016     ( -0.327437   0.291242 )
Epeak [keV] : 9999.25      ( -9999.36 -9999.36 )
Norm@50keV  : 1.41467E-02    ( -0.00221645   0.00903081 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   52.92     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.92e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.62007 ( -0.27191  0.25638 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.62947e-07 ( -2.4826e-08  2.441e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.348 sec. to    0.652 sec.
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.803911   ( 0.803782   0.803782 )
beta        : -0.813680    ( -0.293825   0.318432 )
Epeak [keV] : 14.0280      ( -14.0303 -14.0303 )
Norm@50keV   : 2.13252E-02    ( -0.00990573   377529 )
------------------------------------------------------------
 
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]    : 32.5091  (-7.55086  11.8869)
R^2/D10^2   : 1.84944E-02  (-0.0104098   0.0211543)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   64.35     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.35e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.906e-09   1.081e-09
25- 50  1.850e-08   6.822e-09
50-150  1.333e-07   3.964e-08
15-150  1.547e-07   4.950e-08
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-34.0704      -200)
Norm        : 6.85207       (-1.09139     1.09139)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   72.07     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.62e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.705e-08   9.850e-09
25- 50  3.281e-08   1.860e-08
50-150  7.195e-08   3.955e-08
15-150  1.218e-07   6.815e-08
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.03909        (-3.22373      3.80581)
R1^2/D10^2  : 0.854820        (-0.660922      4.26457)
kT2 [keV]   : 54.9488        (-20.0475      -54.9487)
R2^2/D10^2  : 4.23217E-03    (-0.0031434   0.0097652)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   50.62     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.43e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.132e-08   6.510e-09
25- 50  2.725e-08   1.534e-08
50-150  1.321e-07   7.210e-08
15-150  1.707e-07   8.850e-08
Plot creation:
Sun Jul 31 20:36:55 EDT 2022