batgrbproduct analysis for trigger=1167288

batgrbproduct Analysis for Trigger=1167288

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Sun May  7 18:40:12 EDT 2023
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1167288/GCN5_download_cron
======================================================================

  Trigger: 01167288      Segment: 000

  BAT Trigger Time: 705085790.592   [s; MET]
      Trigger Stop: 705085791.616   [s; MET]
               UTC: 2023-05-06T17:09:19.357080    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 134.373246151572   Dec: 45.1256110571573  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.73
     Image Trigger?:     NO
     Rate S/N Ratio:     11.2249721603218  [ if not an image trigger ]
     Image S/N Ratio:    7.73

  Flight Position:   [ source = BAT ]
    RA: 134.373246151572   Dec: 45.1256110571573  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 134.37130800613   Dec: 45.1307397460312  [deg; J2000]  
        { 08h 57m 29.1s , +45d 07' 50.7" }
         +/- 1.4322381122956 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.797887738240301 [arcmin] (formal 1-sigma fit error)
    SNR: 18.2070458274687
 
  Angular difference between Flight and Ground position is 0.318471 arcmin
 
  Partial Coding Fraction: 0.46875    [ including projection effects ]

  Duration
     T90: 31 +/- 6.32455532033676
        Measured from: -7.5919998884201
                   to: 23.4080001115799     [s; relative to TRIGTIME]
     T50: 9 +/- 3.60555127546399
        Measured from: -1.5919998884201
                   to: 7.4080001115799     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.407999992370605     
                   to: 1.40799999237061     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -8.59200000762939     
                   to: 28.4079999923706     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.981950   1.106976   0.625407   0.202046
           0.086568   0.089588   0.077946   0.068001 [error]
 Peak      0.083923   0.111259   0.070917   0.026915
           0.016493   0.017650   0.015670   0.012354 [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 3.41e-07 4.93e-07 5.30e-07 1.06e-06 1.69e-06 2.43e-06   erg/cm2
              Error 4.77e-08 4.54e-08 7.71e-08 3.12e-07 1.79e-07 3.89e-07   erg/cm2
Peak flux Power-law 9.84e-01 7.93e-01 4.32e-01 3.45e-01 2.36e+00 2.55e+00   ph/cm2/s
              Error 2.69e-01 1.51e-01 1.19e-01 1.80e-01 4.52e-01 4.86e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.35e-07 5.05e-07 5.30e-07 7.59e-07 1.66e-06 2.13e-06   erg/cm2
              Error 5.20e-08 5.81e-08 7.98e-08 6.65e-07 2.04e-07 6.13e-07   erg/cm2
Peak flux Cutoff-PL 9.15e-01 8.69e-01 4.44e-01 1.50e-01 2.33e+00 2.38e+00   ph/cm2/s
              Error 2.95e-01 1.98e-01 1.40e-01 2.47e-01 4.55e-01 5.13e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 9.26e-01 8.58e-01 4.45e-01 1.70e-01 2.34e+00 2.40e+00   ph/cm2/s
              Error -------- -------- -------- -------- 4.56e-01 --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.895    0.169    -      -           4.98e-03 5.31e-04   52.020 57
CPL   1.711    0.630      69.2    0.0      6.31e-03 0.00e+00   51.770 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.876    0.318    -      -           1.66e-02 3.61e-03   64.760 57
CPL   1.165    1.287      51.9    0.0      4.19e-02 0.00e+00   63.620 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: 11.392000 sec.
T50 in the 50-300 keV band: 6.464000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   37.000   -8.592   28.408
T90    31.000   -7.592   23.408
T50     9.000   -1.592    7.408
Peak    1.000    0.408    1.408

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  134.3713 +45.1307 0.0105   42.9 -163.3       3.1455    18.2  TRIG_01167288       
------------------------------------------
 
Foreground time interval of the image:
 -8.592  28.408 (delta_t =  37.000 [sec])
Background time interval of the image:
-239.592  -8.592 (delta_t = 231.000 [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   -8.592 sec. to   28.408 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.89461     ( -0.166066   0.171631 )
Norm@50keV  : 4.97671E-03    ( -0.000535588   0.000526151 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.02 using 59 PHA bins.
# Reduced chi-squared =         0.9126 for     57 degrees of freedom 
# Null hypothesis probability =   6.620365e-01
 
Photon flux (15-150 keV)    in 37 sec: 0.712582 ( -0.0667379  0.0667987 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.69285e-06 ( -1.78446e-07  1.80498e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -8.592 sec. to   28.408 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.71086     ( -0.721101   0.538621 )
Epeak [keV] : 69.1697      (   )
Norm@50keV  : 6.31264E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.77 using 59 PHA bins.
# Reduced chi-squared =         0.9245 for     56 degrees of freedom 
# Null hypothesis probability =   6.354457e-01
 
Photon flux (15-150 keV)    in 37 sec: 0.707623 ( -0.068901  0.068717 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.66389e-06 ( -2.06808e-07  2.01909e-07 ) ergs/cm2
 
Band function
Time interval is from   -8.592 sec. to   28.408 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.93328   ( -6.50693   -4.93328 )
beta        : -2.02272    ( -0.247799   0.19827 )
Epeak [keV] : 22.8628      ( -5.54299 3.6671 )
Norm@50keV   : 1187.81    ( -108.762   7180.48 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.43 using 59 PHA bins.
# Reduced chi-squared =         0.8805 for     55 degrees of freedom 
# Null hypothesis probability =   7.220867e-01
 
Photon flux (15-150 keV)    in 37 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]    : 10.4512  (-1.19476  1.37058)
R^2/D10^2   : 0.278562  (-0.104497   0.165392)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.03 using 59 PHA bins.
# Reduced chi-squared =          1.422 for     57 degrees of freedom 
# Null hypothesis probability =   1.992361e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.324e-07   3.482e-08
25- 50  6.142e-07   6.919e-08
50-150  3.637e-07   9.126e-08
15-150  1.210e-06   1.352e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 83.0758       (-22.5687      38.4038)
Norm        : 3.29610       (-0.443675     0.552257)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.172e-07   4.357e-08
25- 50  5.268e-07   5.014e-08
50-150  7.625e-07   3.117e-07
15-150  1.606e-06   3.243e-07
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.83397        (-1.53585      1.60756)
R1^2/D10^2  : 1.10992        (-0.57388      1.1975)
kT2 [keV]   : 28.0974        (-9.66574      33.1011)
R2^2/D10^2  : 4.77572E-03    (-0.00423156   0.0184912)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.230e-07   9.052e-08
25- 50  5.286e-07   1.474e-07
50-150  8.363e-07   4.230e-07
15-150  1.688e-06   6.020e-07

Peak spectrum fit

Power-law model
Time interval is from    0.408 sec. to    1.408 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.87641     ( -0.30634   0.330655 )
Norm@50keV  : 1.66350E-02    ( -0.00366631   0.00355965 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.76 using 59 PHA bins.
# Reduced chi-squared =          1.136 for     57 degrees of freedom 
# Null hypothesis probability =   2.243211e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.36375 ( -0.451824  0.452192 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.52926e-07 ( -3.27987e-08  3.34244e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.408 sec. to    1.408 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.16512     ( -1.55762   1.01545 )
Epeak [keV] : 51.9146      (   )
Norm@50keV  : 4.18528E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.62 using 59 PHA bins.
# Reduced chi-squared =          1.136 for     56 degrees of freedom 
# Null hypothesis probability =   2.258833e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.33189 ( -0.45464  0.45501 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.45907e-07 ( -3.5192e-08  3.558e-08 ) ergs/cm2
 
Band function
Time interval is from    0.408 sec. to    1.408 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.16622   ( -2.55349   1.4555 )
beta        : -10.0000    ( 10   1.77636e-15 )
Epeak [keV] : 51.9078      ( -20.4313 -51.9078 )
Norm@50keV   : 4.17952E-02    ( -0.0417951   0.300611 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.62 using 59 PHA bins.
# Reduced chi-squared =          1.157 for     55 degrees of freedom 
# Null hypothesis probability =   1.988644e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.34101 ( 4.65899  -0.46564 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.46702e-07 ( 0  0 ) ergs/cm2
 
Single BB
 XSPEC: quit
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.3200  (-2.42012  3.25035)
R^2/D10^2   : 1.00618  (-0.641793   1.75891)
(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  2.204e-08   8.000e-09
25- 50  5.726e-08   1.878e-08
50-150  3.272e-08   1.608e-08
15-150  1.120e-07   3.662e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 83.7924       (-36.5459      98.8775)
Norm        : 11.1137       (-2.74336     3.67431)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.892e-08   7.505e-09
25- 50  4.812e-08   1.225e-08
50-150  7.004e-08   4.592e-08
15-150  1.471e-07   5.829e-08
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.44325        (-2.03547      2.70368)
R1^2/D10^2  : 4.44964        (-3.15049      5.4935)
kT2 [keV]   : 23.0772        (-23.116      34.2367)
R2^2/D10^2  : 3.26280E-02    (-0.0308738   0.0709024)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.015e-08   1.788e-08
25- 50  4.842e-08   2.654e-08
50-150  7.178e-08   4.548e-08
15-150  1.503e-07   7.855e-08
Plot creation:
Sun May  7 18:43:33 EDT 2023