batgrbproduct analysis for trigger=1120270

batgrbproduct Analysis for Trigger=1120270

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Sun Aug 14 17:05:19 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1120270/GCN5_download_cron
======================================================================

  Trigger: 01120270      Segment: 000

  BAT Trigger Time: 682111413.248   [s; MET]
      Trigger Stop: 682111417.344   [s; MET]
               UTC: 2022-08-13T19:23:03.576540    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 81.5009850183749   Dec: -32.9854787271802  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.31
     Image Trigger?:     NO
     Rate S/N Ratio:     14.6969384566991  [ if not an image trigger ]
     Image S/N Ratio:    9.31

  Flight Position:   [ source = BAT ]
    RA: 81.5009850183749   Dec: -32.9854787271802  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 81.5320029074518   Dec: -33.0181229146065  [deg; J2000]  
        { 05h 26m 07.7s , -33d 01' 05.2" }
         +/- 1.59724765102737 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.749362100161353 [arcmin] (formal 1-sigma fit error)
    SNR: 15.5806862664485
 
  Angular difference between Flight and Ground position is 2.504475 arcmin
 
  Partial Coding Fraction: 0.9609375    [ including projection effects ]

  Duration
     T90: 16.5879999399185 +/- 1.91377848255831
        Measured from: -8.41999995708466
                   to: 8.16799998283386     [s; relative to TRIGTIME]
     T50: 6.60799992084503 +/- 3.81430617709851
        Measured from: -0.899999856948853
                   to: 5.70800006389618     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.87599992752075     
                   to: 2.87599992752075     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -9.62800002098083     
                   to: 8.87199997901917     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.175458   0.293233   0.234420   0.058304
           0.027601   0.029011   0.026112   0.023936 [error]
 Peak      0.015082   0.032971   0.029070   0.010626
           0.006346   0.006951   0.006338   0.005763 [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 5.69e-08 1.10e-07 1.65e-07 5.35e-07 4.65e-07 8.67e-07   erg/cm2
              Error 1.04e-08 1.26e-08 2.48e-08 1.70e-07 6.05e-08 1.90e-07   erg/cm2
Peak flux Power-law 1.71e-01 2.03e-01 1.74e-01 2.54e-01 6.38e-01 8.02e-01   ph/cm2/s
              Error 7.18e-02 5.32e-02 4.97e-02 1.53e-01 1.52e-01 2.07e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.78e-08 1.22e-07 1.73e-07 1.46e-07 4.28e-07 4.89e-07   erg/cm2
              Error 1.29e-08 1.63e-08 2.84e-08 1.75e-07 6.60e-08 1.85e-07   erg/cm2
Peak flux Cutoff-PL 1.22e-01 2.20e-01 1.98e-01 8.29e-02 5.99e-01 6.23e-01   ph/cm2/s
              Error 1.12e-01 6.49e-02 6.32e-02 2.36e-01 1.66e-01 2.56e-01   ph/cm2/s
 
Fluence        Band 5.02e-08 1.23e-07 1.79e-07 1.88e-07 4.51e-07 5.20e-07   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 1.38e-01 2.13e-01 1.93e-01 1.27e-01 6.20e-01 6.77e-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    1.415    0.191    -      -           2.61e-03 3.00e-04   55.260 57
CPL   0.378    0.962      77.4   68.7      8.71e-03 1.29e-02   50.830 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.220    0.410    -      -           5.42e-03 1.29e-03   44.570 57
CPL  -0.194    2.745      83.8    0.0      2.47e-02 6.67e-01   43.190 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: 7.040000 sec.
T50 in the 50-300 keV band: 4.416000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   18.500   -9.628    8.872
T90    16.588   -8.420    8.168
T50     6.608   -0.900    5.708
Peak    1.000    1.876    2.876

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   81.5320 -33.0181 0.0123   11.3  -65.0       0.8576    15.6  TRIG_01120270       
------------------------------------------
 
Foreground time interval of the image:
 -9.628   8.872 (delta_t =  18.500 [sec])
Background time interval of the image:
-239.248  -9.628 (delta_t = 229.620 [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   -9.628 sec. to    8.872 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.41516     ( -0.189303   0.192035 )
Norm@50keV  : 2.60687E-03    ( -0.000300703   0.000298582 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.26 using 59 PHA bins.
# Reduced chi-squared =         0.9694 for     57 degrees of freedom 
# Null hypothesis probability =   5.408083e-01
 
Photon flux (15-150 keV)    in 18.5 sec: 0.318578 ( -0.0354193  0.0354383 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.64585e-07 ( -5.99937e-08  6.09793e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   -9.628 sec. to    8.872 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.378456     ( -1.06957   0.855096 )
Epeak [keV] : 77.4270      ( -18.1954 119.288 )
Norm@50keV  : 8.71185E-03    ( -0.00541438   0.0202911 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.83 using 59 PHA bins.
# Reduced chi-squared =         0.9077 for     56 degrees of freedom 
# Null hypothesis probability =   6.702699e-01
 
Photon flux (15-150 keV)    in 18.5 sec: 0.304170 ( -0.03764  0.037438 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.28064e-07 ( -6.45539e-08  6.74214e-08 ) ergs/cm2
 
Band function
Time interval is from   -9.628 sec. to    8.872 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.378586   ( -0.704272   1.14455 )
beta        : -10.0000    ( 10   20 )
Epeak [keV] : 77.4138      ( -15.3949 119.778 )
Norm@50keV   : 8.71140E-03    ( -0.0054144   0.020309 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.83 using 59 PHA bins.
# Reduced chi-squared =         0.9242 for     55 degrees of freedom 
# Null hypothesis probability =   6.345198e-01
 
Photon flux (15-150 keV)    in 18.5 sec: 0.312295 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.50656e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 15.4898  (-1.85773  2.16518)
R^2/D10^2   : 3.38130E-02  (-0.0122754   0.0187027)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.36 using 59 PHA bins.
# Reduced chi-squared =          1.006 for     57 degrees of freedom 
# Null hypothesis probability =   4.615411e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.124e-08   6.244e-09
25- 50  1.278e-07   2.028e-08
50-150  2.116e-07   4.704e-08
15-150  3.706e-07   5.754e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-61.4614      -200)
Norm        : 1.30773       (-0.144214     0.144214)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.025e-08   3.324e-08
25- 50  1.159e-07   6.347e-08
50-150  2.542e-07   1.383e-07
15-150  4.303e-07   2.366e-07
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.25628        (-1.60175      3.61508)
R1^2/D10^2  : 4.81532        (-4.6149      442.724)
kT2 [keV]   : 17.5363        (-2.51784      3.90562)
R2^2/D10^2  : 2.07674E-02    (-0.0112848   0.0113238)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.107e-08   2.073e-08
25- 50  1.134e-07   2.994e-08
50-150  2.397e-07   6.993e-08
15-150  4.041e-07   8.963e-08

Peak spectrum fit

Power-law model
Time interval is from    1.876 sec. to    2.876 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.22042     ( -0.407767   0.412016 )
Norm@50keV  : 5.41590E-03    ( -0.00128723   0.00128319 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.57 using 59 PHA bins.
# Reduced chi-squared =         0.7820 for     57 degrees of freedom 
# Null hypothesis probability =   8.844030e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.637604 ( -0.151526  0.151771 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.46338e-08 ( -1.46493e-08  1.50282e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    1.876 sec. to    2.876 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.194437     ( -3.89221   1.59807 )
Epeak [keV] : 83.7766      ( -83.697 -83.697 )
Norm@50keV  : 2.46802E-02    ( -0.0248034   1.30976 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.19 using 59 PHA bins.
# Reduced chi-squared =         0.7713 for     56 degrees of freedom 
# Null hypothesis probability =   8.948498e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.598902 ( -0.168676  0.162804 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.03631e-08 ( -1.56951e-08  1.64088e-08 ) ergs/cm2
 
Band function
Time interval is from    1.876 sec. to    2.876 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.203437   ( -1.51456   3.89252 )
beta        : -10.0000    ( 10   20 )
Epeak [keV] : 83.6290      ( -25.2035 257.702 )
Norm@50keV   : 2.48932E-02    ( -0.0248931   1.30889 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.19 using 59 PHA bins.
# Reduced chi-squared =         0.7853 for     55 degrees of freedom 
# Null hypothesis probability =   8.756174e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.619665 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.31549e-08 ( 0  0 ) ergs/cm2
 
Single BB
 XSPEC: quit
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 17.9606  (-4.08009  5.89725)
R^2/D10^2   : 4.35306E-02  (-0.0265492   0.0587148)
(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  2.813e-09   1.479e-09
25- 50  1.299e-08   6.567e-09
50-150  3.040e-08   1.606e-08
15-150  4.620e-08   1.776e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-91.4441      -199.363)
Norm        : 2.59720       (-0.621084     0.621089)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.467e-09   3.905e-09
25- 50  1.244e-08   7.380e-09
50-150  2.728e-08   1.614e-08
15-150  4.619e-08   2.741e-08
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.23794        (-1.18584      2.00912)
R1^2/D10^2  : 2.99836E+04        (-27668.3      -27671)
kT2 [keV]   : 19.0730        (-4.43448      6.88851)
R2^2/D10^2  : 3.47032E-02    (-0.0221008   0.0483449)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.793e-09   1.365e-09
25- 50  1.200e-08   6.197e-09
50-150  3.192e-08   1.642e-08
15-150  4.771e-08   2.518e-08
Plot creation:
Sun Aug 14 17:08:30 EDT 2022