batgrbproduct analysis for trigger=1126854

batgrbproduct Analysis for Trigger=1126854

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Mon Oct 10 21:05:20 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1126854/GCN5_download_cron
======================================================================

  Trigger: 01126854      Segment: 000

  BAT Trigger Time: 687017856   [s; MET]
      Trigger Stop: 687017920   [s; MET]
               UTC: 2022-10-09T14:17:05.995200    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 288.275175179698   Dec: 19.7721721338671  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    19.95
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    19.95

  Flight Position:   [ source = BAT ]
    RA: 288.275175179698   Dec: 19.7721721338671  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 288.271504694335   Dec: 19.7755461900339  [deg; J2000]  
        { 19h 13m 05.2s , +19d 46' 32.0" }
         +/- nan [arcmin] (estimated 90% radius based on SNR)
         +/- 0.774699313520381 [arcmin] (formal 1-sigma fit error)
    SNR: -13.916635859283
 
  Angular difference between Flight and Ground position is 0.289712 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 483.479999899864 +/- 346.381171531333
        Measured from: -67.7959998846054
                   to: 415.684000015259     [s; relative to TRIGTIME]
     T50: 254.051999926567 +/- 376.493503413487
        Measured from: -7.35599982738495
                   to: 246.696000099182     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 368.468000054359     
                   to: 369.468000054359     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -81.3359999656677     
                   to: 572.503999948502     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    19.178132  17.728400   8.965156   1.483941
           0.213605   0.216159   0.188150   0.175432 [error]
 Peak      0.045925   0.045581   0.024865   0.011756
           0.008237   0.008367   0.007362   0.006842 [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 5.57e-06 7.19e-06 6.79e-06 1.13e-05 2.33e-05 3.09e-05   erg/cm2
              Error 2.38e-07 1.64e-07 2.10e-07 8.02e-07 4.90e-07 9.12e-07   erg/cm2
Peak flux Power-law 4.61e-01 3.29e-01 1.56e-01 1.03e-01 9.95e-01 1.05e+00   ph/cm2/s
              Error 1.22e-01 6.53e-02 5.89e-02 7.46e-02 1.90e-01 2.08e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.57e-06 7.20e-06 6.79e-06 1.12e-05 2.33e-05 3.08e-05   erg/cm2
              Error 2.55e-07 1.64e-07 2.10e-07 1.25e-06 4.87e-07 1.55e-06   erg/cm2
Peak flux Cutoff-PL 4.60e-01 3.30e-01 1.56e-01 1.03e-01 9.95e-01 1.05e+00   ph/cm2/s
              Error 1.30e-01 7.63e-02 5.98e-02 7.99e-02 1.90e-01 2.18e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 4.34e-01 3.14e-01 1.48e-01 9.22e-02 9.42e-01 9.89e-01   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    2.083    0.046    -      -           3.87e-03 8.50e-05   44.030 57
CPL   1.996   -0.950       2.9   14.9      4.23e-03 2.05e-04   45.300 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.082    0.414    -      -           6.38e-03 1.81e-03   66.250 57
CPL   1.985    0.000       7.2    0.0      7.20e-03 0.00e+00   66.260 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: 472.064000 sec.
T50 in the 50-300 keV band: 472.064000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  653.840  -81.336  572.504
T90   483.480  -67.796  415.684
T50   254.052   -7.356  246.696
Peak    1.000  368.468  369.468

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  288.2715 +19.7755 0.0139    0.0  133.7     -12.6988   -13.9  TRIG_01126854       
------------------------------------------
 
Foreground time interval of the image:
-81.336  93.320 (delta_t = 174.656 [sec])
 94.000 154.610 (delta_t =  60.610 [sec])
156.000 231.950 (delta_t =  75.950 [sec])
233.000 320.050 (delta_t =  87.050 [sec])
321.000 420.750 (delta_t =  99.750 [sec])
421.000 572.504 (delta_t = 151.504 [sec])
Background time interval of the image:
-239.000 -217.060 (delta_t =  21.940 [sec])
-216.000 -99.200 (delta_t = 116.800 [sec])
-97.000 -81.336 (delta_t =  15.664 [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
Multiple GTIs in the spectrum
tstart tstop
-81.336000 93.320000
94.000000 154.610000
156.000000 231.950000
233.000000 320.050000
321.000000 420.750000
421.000000 572.504000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.08253     ( -0.0463482   0.0466012 )
Norm@50keV  : 3.87438E-03    ( -8.51656e-05   8.48821e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.03 using 59 PHA bins.
# Reduced chi-squared =         0.7725 for     57 degrees of freedom 
# Null hypothesis probability =   8.957351e-01
 
Photon flux (15-150 keV)    in 649.5 sec: 0.604336 ( -0.0157345  0.0158603 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.33422e-05 ( -4.9022e-07  4.90502e-07 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-81.336000 93.320000
94.000000 154.610000
156.000000 231.950000
233.000000 320.050000
321.000000 420.750000
421.000000 572.504000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.99550     ( -0.096377   -1.9955 )
Epeak [keV] : 2.86827      ( -1.06894 28.6606 )
Norm@50keV  : 4.23413E-03    ( -0.000203383   0.000206193 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.30 using 59 PHA bins.
# Reduced chi-squared =         0.8090 for     56 degrees of freedom 
# Null hypothesis probability =   8.460111e-01
 
Photon flux (15-150 keV)    in 649.5 sec: 0.603886 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.33382e-05 ( -4.8654e-07  4.86865e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-81.336000 93.320000
94.000000 154.610000
156.000000 231.950000
233.000000 320.050000
321.000000 420.750000
421.000000 572.504000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.55424   ( 1.55445   1.55445 )
beta        : -2.08804    ( 2.08792   0.0503769 )
Epeak [keV] : 21.3884      ( -21.3575 11.3278 )
Norm@50keV   : 9.44775E-03    ( -0.00455441   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.88 using 59 PHA bins.
# Reduced chi-squared =         0.7979 for     55 degrees of freedom 
# Null hypothesis probability =   8.591652e-01
 
Photon flux (15-150 keV)    in 649.5 sec: 0.689975 ( 6.31002  -0.689975 ) 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]    : 12.0886  (  )
R^2/D10^2   : 0.117126  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         580.37 using 59 PHA bins.
# Reduced chi-squared =         10.182 for     57 degrees of freedom 
# Null hypothesis probability =   9.579058e-88
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.353e-06   9.905e-08
25- 50  7.468e-06   2.046e-07
50-150  6.594e-06   2.975e-07
15-150  1.641e-05   3.540e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 73.1799       (-5.14626      5.78514)
Norm        : 2.72111       (-0.116799     0.123539)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.554e-06   1.572e-07
25- 50  7.332e-06   1.689e-07
50-150  9.728e-06   4.157e-07
15-150  2.161e-05   5.196e-07
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.30038        (-0.455335      0.476695)
R1^2/D10^2  : 1.15625        (-0.288398      0.416655)
kT2 [keV]   : 22.5930        (-1.82664      2.24215)
R2^2/D10^2  : 7.93986E-03    (-0.00244248   0.00317814)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.716e-06   3.429e-07
25- 50  7.272e-06   2.468e-07
50-150  1.038e-05   6.527e-07
15-150  2.237e-05   8.996e-07

Peak spectrum fit

Power-law model
Time interval is from  368.468 sec. to  369.468 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.08164     ( -0.379466   0.449534 )
Norm@50keV  : 6.38424E-03    ( -0.00186559   0.00174854 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.25 using 59 PHA bins.
# Reduced chi-squared =          1.162 for     57 degrees of freedom 
# Null hypothesis probability =   1.881107e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.995400 ( -0.190337  0.190375 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.92154e-08 ( -1.47829e-08  1.55659e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  368.468 sec. to  369.468 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.98529     (     )
Epeak [keV] : 7.17307      (   )
Norm@50keV  : 7.20162E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.26 using 59 PHA bins.
# Reduced chi-squared =          1.183 for     56 degrees of freedom 
# Null hypothesis probability =   1.640081e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.995067 ( -0.189961  0.190003 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.91924e-08 ( -1.5773e-08  8.4992e-09 ) ergs/cm2
 
Band function
Time interval is from  368.468 sec. to  369.468 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -2.77084   ( 1.64499   2.77084 )
beta        : -2.08164    ( -0.449533   0.380008 )
Epeak [keV] : 64.5429      ( -64.5429 -64.5429 )
Norm@50keV   : 0.867708    ( -0.25356   0.237653 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.25 using 59 PHA bins.
# Reduced chi-squared =          1.204 for     55 degrees of freedom 
# Null hypothesis probability =   1.424250e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.942132 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.55681e-08 ( 0  0 ) ergs/cm2
 
Single BB
 XSPEC: quit
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.6749  (-2.74425  3.11009)
R^2/D10^2   : 0.354674  (-0.214686   0.7049)
(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  8.389e-09   3.410e-09
25- 50  2.281e-08   7.485e-09
50-150  1.434e-08   7.653e-09
15-150  4.554e-08   1.471e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 62.9558       (-28.484      75.3854)
Norm        : 5.08556       (-1.38996     2.10861)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.288e-08   3.508e-09
25- 50  1.988e-08   6.285e-09
50-150  2.353e-08   1.401e-08
15-150  5.629e-08   1.987e-08
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.85807        (-1.47147      1.85988)
R1^2/D10^2  : 72.9343        (-67.4699      20172.9)
kT2 [keV]   : 14.8088        (-3.78161      6.01844)
R2^2/D10^2  : 8.99271E-02    (-0.066114   0.191166)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.416e-08   7.305e-09
25- 50  1.747e-08   9.891e-09
50-150  2.410e-08   1.548e-08
15-150  5.574e-08   3.031e-08
Plot creation:
Mon Oct 10 21:08:22 EDT 2022