batgrbproduct analysis for trigger=1154815

batgrbproduct Analysis for Trigger=1154815

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Fri Feb 17 15:38:11 EST 2023
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1154815/GCN5_download_cron
======================================================================

  Trigger: 01154815      Segment: 000

  BAT Trigger Time: 698251745.6   [s; MET]
      Trigger Stop: 698251747.648   [s; MET]
               UTC: 2023-02-16T14:48:34.830740    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 113.966019310163   Dec: -8.01514618542377  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.91
     Image Trigger?:     NO
     Rate S/N Ratio:     8.83176086632785  [ if not an image trigger ]
     Image S/N Ratio:    7.91

  Flight Position:   [ source = BAT ]
    RA: 113.966019310163   Dec: -8.01514618542377  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 113.966326090273   Dec: -7.99338536331834  [deg; J2000]  
        { 07h 35m 51.9s , -07d 59' 36.2" }
         +/- 2.12503839488415 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.01020432465023 [arcmin] (formal 1-sigma fit error)
    SNR: 10.3621899633014
 
  Angular difference between Flight and Ground position is 1.305777 arcmin
 
  Partial Coding Fraction: 0.8515625    [ including projection effects ]

  Duration
     T90: 91.1999999284744 +/- 7.31422286455825
        Measured from: -78.8959999084473
                   to: 12.3040000200272     [s; relative to TRIGTIME]
     T50: 55.6159999370575 +/- 28.9156788765114
        Measured from: -55.0239999294281
                   to: 0.592000007629395     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.131999969482422     
                   to: 0.868000030517578     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -81.0720000267029     
                   to: 16.3999999761581     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.941843   0.904565   0.450158   0.043725
           0.099530   0.102565   0.089783   0.085751 [error]
 Peak      0.049528   0.074021   0.028989   0.000430
           0.011285   0.011897   0.010028   0.009236 [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 2.59e-07 3.73e-07 3.99e-07 7.92e-07 1.28e-06 1.82e-06   erg/cm2
              Error 4.42e-08 4.58e-08 8.49e-08 3.34e-07 1.96e-07 4.27e-07   erg/cm2
Peak flux Power-law 5.21e-01 4.12e-01 2.19e-01 1.69e-01 1.23e+00 1.32e+00   ph/cm2/s
              Error 1.50e-01 8.91e-02 7.54e-02 1.09e-01 2.65e-01 2.93e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.49e-07 3.98e-07 3.89e-07 3.15e-07 1.21e-06 1.35e-06   erg/cm2
              Error 4.86e-08 6.24e-08 9.51e-08 3.97e-07 2.21e-07 5.79e-07   erg/cm2
Peak flux Cutoff-PL 4.79e-01 4.88e-01 2.05e-01 3.12e-02 1.20e+00 1.20e+00   ph/cm2/s
              Error 1.65e-01 1.32e-01 1.04e-01 8.49e-02 2.65e-01 2.75e-01   ph/cm2/s
 
Fluence        Band 2.47e-07 3.95e-07 3.92e-07 3.43e-07 1.21e-06 1.38e-06   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 4.84e-01 4.75e-01 2.16e-01 -------- 1.21e+00 1.22e+00   ph/cm2/s
              Error 1.63e-01 -------- -------- -------- 2.68e-01 2.73e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.904    0.230    -      -           1.42e-03 2.21e-04   46.130 57
CPL   1.383    0.887      49.3    0.0      2.86e-03 0.00e+00   45.100 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.911    0.371    -      -           8.53e-03 2.28e-03   63.110 57
CPL   0.553    2.217      42.0   60.1      5.63e-02 2.09e+00   60.930 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   97.472  -81.072   16.400
T90    91.200  -78.896   12.304
T50    55.616  -55.024    0.592
Peak    1.000   -0.132    0.868

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  113.9663  -7.9934 0.0186   15.9   89.8       2.5045    10.4  TRIG_01154815       
------------------------------------------
 
Foreground time interval of the image:
-81.072  16.400 (delta_t =  97.472 [sec])
Background time interval of the image:
-239.600 -81.072 (delta_t = 158.528 [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  -81.072 sec. to   16.400 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.90352     ( -0.22284   0.236416 )
Norm@50keV  : 1.42449E-03    ( -0.000223666   0.000217801 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.13 using 59 PHA bins.
# Reduced chi-squared =         0.8093 for     57 degrees of freedom 
# Null hypothesis probability =   8.479103e-01
 
Photon flux (15-150 keV)    in 97.47 sec: 0.204734 ( -0.0248978  0.0248979 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.27654e-06 ( -1.92733e-07  1.98499e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -81.072 sec. to   16.400 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.38317     ( -1.04741   0.727242 )
Epeak [keV] : 49.3086      (   )
Norm@50keV  : 2.85754E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.10 using 59 PHA bins.
# Reduced chi-squared =         0.8054 for     56 degrees of freedom 
# Null hypothesis probability =   8.511329e-01
 
Photon flux (15-150 keV)    in 97.47 sec: 0.200836 ( -0.025607  0.02566 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.2052e-06 ( -2.12046e-07  2.29513e-07 ) ergs/cm2
 
Band function
Time interval is from  -81.072 sec. to   16.400 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.38314   ( 1.48526   1.06726 )
beta        : -10.0000    ( 10   5.32907e-15 )
Epeak [keV] : 49.2916      ( -17.4932 -49.2916 )
Norm@50keV   : 2.85744E-03    ( -0.00160552   0.00863423 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.10 using 59 PHA bins.
# Reduced chi-squared =         0.8200 for     55 degrees of freedom 
# Null hypothesis probability =   8.270590e-01
 
Photon flux (15-150 keV)    in 97.47 sec: 0.201691 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.21353e-06 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.5932  (-1.55799  1.79083)
R^2/D10^2   : 7.71395E-02  (-0.0341195   0.0628832)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.69 using 59 PHA bins.
# Reduced chi-squared =          1.047 for     57 degrees of freedom 
# Null hypothesis probability =   3.781236e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.748e-07   3.753e-08
25- 50  4.704e-07   7.432e-08
50-150  2.894e-07   8.884e-08
15-150  9.347e-07   1.754e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 76.3927       (-25.5442      50.4297)
Norm        : 0.978445       (-0.168465     0.209769)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.467e-07   4.259e-08
25- 50  4.015e-07   5.687e-08
50-150  5.491e-07   2.878e-07
15-150  1.197e-06   3.257e-07
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.46835        (-1.43126      1.90938)
R1^2/D10^2  : 1.28732        (-0.954081      4.10245)
kT2 [keV]   : 15.9795        (-3.49943      6.38255)
R2^2/D10^2  : 1.32286E-02    (-0.00982061   0.0227013)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.584e-07   1.380e-07
25- 50  3.794e-07   1.869e-07
50-150  5.127e-07   3.056e-07
15-150  1.151e-06   5.985e-07

Peak spectrum fit

Power-law model
Time interval is from   -0.132 sec. to    0.868 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.91114     ( -0.35282   0.388771 )
Norm@50keV  : 8.52699E-03    ( -0.00232041   0.00224952 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.11 using 59 PHA bins.
# Reduced chi-squared =          1.107 for     57 degrees of freedom 
# Null hypothesis probability =   2.692257e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.22954 ( -0.264824  0.264831 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.84101e-08 ( -2.0222e-08  2.11598e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -0.132 sec. to    0.868 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.553415     ( -2.89717   1.53688 )
Epeak [keV] : 41.9582      ( -41.9464 78.3442 )
Norm@50keV  : 5.62726E-02    ( -0.0564272   4.12307 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.93 using 59 PHA bins.
# Reduced chi-squared =          1.088 for     56 degrees of freedom 
# Null hypothesis probability =   3.031940e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.19833 ( -0.264283  0.26569 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.91976e-08 ( -1.99302e-08  2.32157e-08 ) ergs/cm2
 
Band function
Time interval is from   -0.132 sec. to    0.868 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.32518   ( -7.76106   -3.31859 )
beta        : -2.40697    ( 2.40551   0.659774 )
Epeak [keV] : 28.6491      ( -28.6512 191.651 )
Norm@50keV   : 43.0472    ( -41.2622   297.265 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.54 using 59 PHA bins.
# Reduced chi-squared =          1.101 for     55 degrees of freedom 
# Null hypothesis probability =   2.826723e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.21193 ( 5.78807  -0.280478 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.33618e-08 ( -7.33548e-08  -2.26375e-08 ) ergs/cm2
 
Single BB
 XSPEC: quit
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 9.55733  (-1.94346  2.62829)
R^2/D10^2   : 0.724639  (-0.441176   0.999621)
(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  1.325e-08   5.494e-09
25- 50  3.086e-08   1.051e-08
50-150  1.411e-08   7.773e-09
15-150  5.822e-08   2.044e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 69.7339       (-31.5346      92.2436)
Norm        : 6.18650       (-1.73114     2.41242)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.587e-08   4.795e-09
25- 50  2.522e-08   8.700e-09
50-150  3.230e-08   2.279e-08
15-150  7.338e-08   3.235e-08
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.83784        (-7.11971      3.42567)
R1^2/D10^2  : 1.79117        (-1.65582      -1.65582)
kT2 [keV]   : 18.7701        (-20.5541      -20.5541)
R2^2/D10^2  : 2.88256E-02    (-0.021348   0.894088)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.513e-08   9.055e-09
25- 50  2.672e-08   1.524e-08
50-150  2.730e-08   1.901e-08
15-150  6.916e-08   3.844e-08
Plot creation:
Fri Feb 17 15:41:14 EST 2023