batgrbproduct analysis for trigger=1264304

batgrbproduct Analysis for Trigger=1264304

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Sat Nov  2 07:03:21 EDT 2024
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1264304/GCN5_download_cron
======================================================================

  Trigger: 01264304      Segment: 000

  BAT Trigger Time: 752132540.224   [s; MET]
      Trigger Stop: 752132541.248   [s; MET]
               UTC: 2024-11-01T05:41:45.768580    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 204.332981941944   Dec: 28.2635808935666  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.27
     Image Trigger?:     NO
     Rate S/N Ratio:     22  [ if not an image trigger ]
     Image S/N Ratio:    11.27

  Flight Position:   [ source = BAT ]
    RA: 204.332981941944   Dec: 28.2635808935666  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 204.323046389437   Dec: 28.2380450223198  [deg; J2000]  
        { 13h 37m 17.5s , +28d 14' 17.0" }
         +/- 1.20672943710047 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.372123937676397 [arcmin] (formal 1-sigma fit error)
    SNR: 23.2558811036455
 
  Angular difference between Flight and Ground position is 1.619644 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 10.8919999599457 +/- 3.90243252117558
        Measured from: -2.17999982833862
                   to: 8.71200013160706     [s; relative to TRIGTIME]
     T50: 3.16799986362457 +/- 0.755502541649496
        Measured from: -0.283999800682068
                   to: 2.8840000629425     [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: -2.76399993896484     
                   to: 12.892000079155     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.318207   0.367943   0.213599   0.034140
           0.022216   0.023205   0.019365   0.016486 [error]
 Peak      0.050138   0.073463   0.055872   0.006147
           0.006183   0.006635   0.005423   0.004357 [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 9.28e-08 1.43e-07 1.65e-07 3.65e-07 5.08e-07 7.66e-07   erg/cm2
              Error 1.05e-08 1.03e-08 1.88e-08 8.55e-08 4.34e-08 1.03e-07   erg/cm2
Peak flux Power-law 4.85e-01 4.81e-01 3.34e-01 3.66e-01 1.45e+00 1.67e+00   ph/cm2/s
              Error 7.87e-02 5.01e-02 4.31e-02 9.34e-02 1.46e-01 1.69e-01   ph/cm2/s
 
Fluence   Cutoff-PL 8.95e-08 1.48e-07 1.65e-07 2.14e-07 4.93e-07 6.16e-07   erg/cm2
              Error 1.18e-08 1.33e-08 1.98e-08 1.63e-07 4.99e-08 1.60e-07   erg/cm2
Peak flux Cutoff-PL 4.14e-01 5.25e-01 3.58e-01 1.49e-01 1.40e+00 1.45e+00   ph/cm2/s
              Error 9.44e-02 6.20e-02 5.03e-02 -------- 1.50e-01 1.80e-01   ph/cm2/s
 
Fluence        Band 8.79e-08 1.49e-07 1.60e-07 3.14e-07 4.97e-07 7.12e-07   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 4.32e-01 5.16e-01 3.55e-01 1.81e-01 1.41e+00 1.48e+00   ph/cm2/s
              Error 8.77e-02 6.40e-02 4.74e-02 -------- 1.55e-01 1.90e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.792    0.135    -      -           3.53e-03 2.92e-04   42.630 57
CPL   1.479    0.416      74.9  -24.8      5.23e-03 3.61e-03   41.510 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.527    0.165    -      -           1.15e-02 1.19e-03   58.840 57
CPL   0.602    0.745      74.8   42.3      3.41e-02 3.49e-02   53.180 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: 5.760000 sec.
T50 in the 50-300 keV band: 2.752000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   15.656   -2.764   12.892
T90    10.892   -2.180    8.712
T50     3.168   -0.284    2.884
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
  204.3230 +28.2380 0.0083   12.6 -145.7       0.9475    23.3  TRIG_01264304       
------------------------------------------
 
Foreground time interval of the image:
 -2.764  12.892 (delta_t =  15.656 [sec])
Background time interval of the image:
-239.224 -77.284 (delta_t = 161.940 [sec])
-76.224  -2.764 (delta_t =  73.460 [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   -2.764 sec. to   12.892 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.79230     ( -0.133436   0.13669 )
Norm@50keV  : 3.52574E-03    ( -0.000293697   0.000289769 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.63 using 59 PHA bins.
# Reduced chi-squared =         0.7479 for     57 degrees of freedom 
# Null hypothesis probability =   9.214719e-01
 
Photon flux (15-150 keV)    in 15.66 sec: 0.484398 ( -0.0353665  0.0353858 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.08444e-07 ( -4.31303e-08  4.36577e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -2.764 sec. to   12.892 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.47931     ( -0.56313   0.268602 )
Epeak [keV] : 74.9095      ( -25.2265 -74.9095 )
Norm@50keV  : 5.23236E-03    ( -0.0019277   0.00529941 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.51 using 59 PHA bins.
# Reduced chi-squared =         0.7413 for     56 degrees of freedom 
# Null hypothesis probability =   9.256951e-01
 
Photon flux (15-150 keV)    in 15.66 sec: 0.477291 ( -0.037092  0.037063 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.92754e-07 ( -4.96344e-08  5.01919e-08 ) ergs/cm2
 
Band function
Time interval is from   -2.764 sec. to   12.892 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.47934   ( 1.45529   0.515522 )
beta        : -10.0000    ( 10   1.77636e-15 )
Epeak [keV] : 74.8981      ( -24.4345 -74.8981 )
Norm@50keV   : 5.23130E-03    ( -0.00192783   0.00530111 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.51 using 59 PHA bins.
# Reduced chi-squared =         0.7547 for     55 degrees of freedom 
# Null hypothesis probability =   9.105989e-01
 
Photon flux (15-150 keV)    in 15.66 sec: 0.477509 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.97163e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.5221  (-1.0649  1.19164)
R^2/D10^2   : 0.132648  (-0.040631   0.0578432)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          85.42 using 59 PHA bins.
# Reduced chi-squared =          1.499 for     57 degrees of freedom 
# Null hypothesis probability =   8.749762e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.807e-08   7.963e-09
25- 50  1.740e-07   1.456e-08
50-150  1.351e-07   2.420e-08
15-150  3.672e-07   3.093e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 99.7841       (-23.007      43.9704)
Norm        : 2.13494       (-0.223666     0.233415)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.738e-08   1.045e-08
25- 50  1.510e-07   1.327e-08
50-150  2.445e-07   8.237e-08
15-150  4.829e-07   9.161e-08
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.24433        (-1.3213      1.42185)
R1^2/D10^2  : 0.884522        (-0.443827      1.21661)
kT2 [keV]   : 22.4135        (-4.78321      8.54817)
R2^2/D10^2  : 8.45732E-03    (-0.00585492   0.0124797)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.804e-08   2.654e-08
25- 50  1.476e-07   3.791e-08
50-150  2.538e-07   1.239e-07
15-150  4.895e-07   1.535e-07

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: 1.52699     ( -0.163761   0.166184 )
Norm@50keV  : 1.14948E-02    ( -0.00119352   0.00118588 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.84 using 59 PHA bins.
# Reduced chi-squared =          1.032 for     57 degrees of freedom 
# Null hypothesis probability =   4.078178e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.44566 ( -0.145501  0.145628 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.08581e-07 ( -1.22097e-08  1.23326e-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: 0.601576     ( -0.808494   0.682163 )
Epeak [keV] : 74.7788      ( -16.0937 68.4093 )
Norm@50keV  : 3.41108E-02    ( -0.0184866   0.0512485 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.18 using 59 PHA bins.
# Reduced chi-squared =         0.9497 for     56 degrees of freedom 
# Null hypothesis probability =   5.821563e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.39853 ( -0.15027  0.15001 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.02404e-07 ( -1.28125e-08  1.3104e-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       : -0.600726   ( -0.619662   0.88824 )
beta        : -10.00000    ( 10   4.40643e-11 )
Epeak [keV] : 74.7264      ( -16.0512 68.3626 )
Norm@50keV   : 3.41510E-02    ( -0.00335593   0.00335593 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.18 using 59 PHA bins.
# Reduced chi-squared =         0.9670 for     55 degrees of freedom 
# Null hypothesis probability =   5.443183e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.41476 ( 5.58524  -0.16915 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.04793e-07 ( 0  0 ) ergs/cm2
 
Single BB
 XSPEC: quit
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 15.0095  (-1.66799  1.89475)
R^2/D10^2   : 0.168500  (-0.0580805   0.0872456)
(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  7.947e-09   1.540e-09
25- 50  3.159e-08   4.425e-09
50-150  4.845e-08   9.340e-09
15-150  8.800e-08   1.160e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 197.927       (-75.6176      -198.069)
Norm        : 5.94187       (-0.585451     0.644199)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.481e-08   8.275e-09
25- 50  2.847e-08   1.369e-08
50-150  6.228e-08   3.276e-08
15-150  1.056e-07   5.077e-08
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.25823        (-2.01101      2.76201)
R1^2/D10^2  : 3.18813        (-2.44243      22.1425)
kT2 [keV]   : 19.3160        (-3.17828      5.28922)
R2^2/D10^2  : 5.98389E-02    (-0.0374094   0.0490828)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.381e-08   6.905e-09
25- 50  2.819e-08   1.085e-08
50-150  5.874e-08   2.292e-08
15-150  1.007e-07   3.869e-08
Plot creation:
Sat Nov  2 07:08:27 EDT 2024