batgrbproduct analysis for trigger=1114077

batgrbproduct Analysis for Trigger=1114077

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Sat Jul  2 16:14:46 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1114077/GCN5_download_cron
======================================================================

  Trigger: 01114077      Segment: 000

  BAT Trigger Time: 678371216   [s; MET]
      Trigger Stop: 678371280   [s; MET]
               UTC: 2022-07-01T12:26:26.582480    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 103.789281316002   Dec: -1.47527991985016  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    15.99
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    15.99

  Flight Position:   [ source = BAT ]
    RA: 103.789281316002   Dec: -1.47527991985016  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 103.794250464522   Dec: -1.50742522802634  [deg; J2000]  
        { 06h 55m 10.6s , -01d 30' 26.7" }
         +/- 3.26311506738505 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.06330764637962 [arcmin] (formal 1-sigma fit error)
    SNR: 5.61510426363419
 
  Angular difference between Flight and Ground position is 1.951612 arcmin
 
  Partial Coding Fraction: 0.578125    [ including projection effects ]

  Duration
     T90: 274 +/- 51.9711458407451
        Measured from: -166.999999880791
                   to: 107.000000119209     [s; relative to TRIGTIME]
     T50: 131 +/- 25.0798724079689
        Measured from: -96.9999998807907
                   to: 34.0000001192093     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 29     
                   to: 30     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -184     
                   to: 145     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     4.176391   3.107888   0.157901  -0.083155
           0.143411   0.149627   0.133925   0.130819 [error]
 Peak      0.046818   0.027452   0.002891   0.006371
           0.007960   0.008173   0.007331   0.006948 [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 1.47e-06 1.14e-06 5.88e-07 4.39e-07 3.40e-06 3.63e-06   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux Power-law 4.06e-01 2.21e-01 7.56e-02 3.36e-02 7.21e-01 7.37e-01   ph/cm2/s
              Error 1.20e-01 7.14e-02 4.81e-02 4.39e-02 1.91e-01 2.00e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.33e-06 1.35e-06 1.52e-07 4.98e-10 2.83e-06 2.83e-06   erg/cm2
              Error 1.24e-07 1.09e-07 7.59e-08 1.53e-09 1.99e-07 1.99e-07   erg/cm2
Peak flux Cutoff-PL 4.03e-01 2.50e-01 5.08e-02 2.82e-03 7.06e-01 7.07e-01   ph/cm2/s
              Error 1.27e-01 9.30e-02 6.02e-02 3.83e-02 1.86e-01 1.89e-01   ph/cm2/s
 
Fluence        Band 8.81e-07 9.13e-07 8.14e-08 3.23e-09 1.89e-06 1.89e-06   erg/cm2
              Error 9.71e-08 1.10e-07 8.36e-08 3.22e-08 1.92e-07 1.97e-07   erg/cm2
Peak flux      Band -------- -------- -------- -------- -------- --------   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    2.951    0.000    -      -           8.85e-04 0.00e+00  126.720 57
CPL  -1.065    1.367      23.0    2.2      4.93e-01 3.91e+00   65.550 56
 
The chi2 of BB fit is 65.62 which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.550    0.614    -      -           3.56e-03 1.75e-03   74.640 57
CPL   1.133    0.000      19.0    0.0      3.37e-02 0.00e+00   73.890 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  329.000 -184.000  145.000
T90   274.000 -167.000  107.000
T50   131.000  -97.000   34.000
Peak    1.000   29.000   30.000

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  103.7943  -1.5074 0.0342   25.4  -74.9       5.3350     5.6  TRIG_01114077       
------------------------------------------
 
Foreground time interval of the image:
-184.000 -56.890 (delta_t = 127.110 [sec])
-56.000  49.610 (delta_t = 105.610 [sec])
 51.000 145.000 (delta_t =  94.000 [sec])
Background time interval of the image:
-239.000 -184.000 (delta_t =  55.000 [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
Multiple GTIs in the spectrum
tstart tstop
-184.000000 -56.890200
-56.000000 49.610000
51.000000 145.000000
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.95118     (     )
Norm@50keV  : 8.84749E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         126.72 using 59 PHA bins.
# Reduced chi-squared =         2.2232 for     57 degrees of freedom 
# Null hypothesis probability =   3.258625e-07
 
Photon flux (15-150 keV)    in 326.7 sec: 0.234873 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.39742e-06 ( 0  0 ) ergs/cm2
 
Cutoff power-law model
Multiple GTIs in the spectrum
tstart tstop
-184.000000 -56.890200
-56.000000 49.610000
51.000000 145.000000
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.06512     ( -1.54476   1.18848 )
Epeak [keV] : 22.9661      ( -2.46934 1.87804 )
Norm@50keV  : 0.493172    ( -0.751979   7.06684 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.55 using 59 PHA bins.
# Reduced chi-squared =          1.170 for     56 degrees of freedom 
# Null hypothesis probability =   1.794296e-01
 
Photon flux (15-150 keV)    in 326.7 sec: 0.214927 ( -0.014709  0.014729 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.8296e-06 ( -1.9567e-07  2.01515e-07 ) ergs/cm2
 
Band function
Multiple GTIs in the spectrum
tstart tstop
-184.000000 -56.890200
-56.000000 49.610000
51.000000 145.000000
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.29253   ( -1.16928   1.99437 )
beta        : -10.0000    ( 10   10 )
Epeak [keV] : 23.2605      ( -2.51892 1.91338 )
Norm@50keV   : 0.720571    ( -0.720545   7.15496 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.31 using 59 PHA bins.
# Reduced chi-squared =          1.187 for     55 degrees of freedom 
# Null hypothesis probability =   1.610708e-01
 
Photon flux (15-150 keV)    in 326.7 sec: 0.215784 ( 6.78422  -0.014678 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.88785e-06 ( -1.88556e-06  -1.73893e-07 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 6.08814  (-0.330645  0.349652)
R^2/D10^2   : 0.799088  (-0.182166   0.237976)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.62 using 59 PHA bins.
# Reduced chi-squared =          1.151 for     57 degrees of freedom 
# Null hypothesis probability =   2.028534e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.313e-06   1.250e-07
25- 50  1.351e-06   1.098e-07
50-150  1.313e-07   3.540e-08
15-150  2.795e-06   1.877e-07
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 19.8275       (-2.09116      2.44183)
Norm        : 2.87968       (-0.409927     0.484538)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.448e-06   1.130e-07
25- 50  1.260e-06   9.523e-08
50-150  3.719e-07   9.468e-08
15-150  3.080e-06   2.034e-07
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.36535        (-5.34532      -5.34532)
R1^2/D10^2  : 0.833263        (-0.82291      -0.82291)
kT2 [keV]   : 7.22318        (-7.13168      -7.13168)
R2^2/D10^2  : 0.162940    (-0.194866   0.824673)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.331e-06   1.696e-05
25- 50  1.344e-06   5.363e-05
50-150  1.623e-07   1.039e-04
15-150  2.837e-06   1.368e-04

Peak spectrum fit

Power-law model
Time interval is from   29.000 sec. to   30.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.55021     ( -0.535554   0.692211 )
Norm@50keV  : 3.55940E-03    ( -0.001711   0.00178816 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.64 using 59 PHA bins.
# Reduced chi-squared =          1.310 for     57 degrees of freedom 
# Null hypothesis probability =   5.838303e-02
 
Photon flux (15-150 keV)    in 1 sec: 0.721301 ( -0.190292  0.191248 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.60948e-08 ( -1.23315e-08  1.39494e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from   29.000 sec. to   30.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.13282     (     )
Epeak [keV] : 18.9823      (   )
Norm@50keV  : 3.36509E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.89 using 59 PHA bins.
# Reduced chi-squared =          1.319 for     56 degrees of freedom 
# Null hypothesis probability =   5.486561e-02
 
Photon flux (15-150 keV)    in 1 sec: 0.706424 ( -0.184168  0.188225 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.15336e-08 ( -1.07179e-08  1.62706e-08 ) ergs/cm2
 
Band function
Time interval is from   29.000 sec. to   30.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.87525   ( -4.87525   -4.87525 )
beta        : -3.21710    ( -3.45443   0.947949 )
Epeak [keV] : 21.8988      ( -21.8988 4.85691 )
Norm@50keV   : 2020.54    ( -510.808   1.75929e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.26 using 59 PHA bins.
# Reduced chi-squared =          1.332 for     55 degrees of freedom 
# Null hypothesis probability =   5.039104e-02
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.47047e-08 ( -1.46977e-08  -1.7588e-09 ) ergs/cm2
 
Single BB
 XSPEC: quit
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 6.13653  (-1.65203  2.32637)
R^2/D10^2   : 2.42267  (-2.41816   6.96092)
(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  1.251e-08   7.355e-09
25- 50  1.310e-08   7.928e-09
50-150  1.314e-09   1.304e-09
15-150  2.692e-08   1.609e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 26.8656       (-12.3852      27.976)
Norm        : 6.47674       (-2.80259     6.23024)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.240e-08   4.797e-09
25- 50  1.330e-08   7.230e-09
50-150  6.269e-09   5.234e-09
15-150  3.197e-08   1.739e-08
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 12.0077        (-11.9775      -11.9775)
R1^2/D10^2  : 7.96477E-02        (-0.0804576      5.06878)
kT2 [keV]   : 4.47098        (-4.46781      2.87131)
R2^2/D10^2  : 6.83665    (-6.85567   -6.85567)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.261e-08   7.770e-09
25- 50  1.236e-08   7.420e-09
50-150  6.253e-09   4.393e-09
15-150  3.122e-08   1.695e-08
Plot creation:
Sat Jul  2 16:18:07 EDT 2022