batgrbproduct analysis for trigger=1100848

batgrbproduct Analysis for Trigger=1100848

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Sun Apr  3 03:35:37 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1100848/GCN5_download_cron
======================================================================

  Trigger: 01100848      Segment: 000

  BAT Trigger Time: 670564511.388   [s; MET]
      Trigger Stop: 670564511.42   [s; MET]
               UTC: 2022-04-02T03:54:42.499260    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 30.6924702697254   Dec: -61.3764117991001  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.83
     Image Trigger?:     NO
     Rate S/N Ratio:     6.32455532033676  [ if not an image trigger ]
     Image S/N Ratio:    6.83

  Flight Position:   [ source = BAT ]
    RA: 30.6924702697254   Dec: -61.3764117991001  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 30.6890429299858   Dec: -61.3477737119367  [deg; J2000]  
        { 02h 02m 45.4s , -61d 20' 52.0" }
         +/- 4.61523600010376 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.6390931763747 [arcmin] (formal 1-sigma fit error)
    SNR: 3.4219206297732
 
  Angular difference between Flight and Ground position is 1.721109 arcmin
 
  Partial Coding Fraction: 0.7734375    [ including projection effects ]

  Duration
     T90: 0.031999945640564 +/- 
        Measured from: 0
                   to: 0.031999945640564     [s; relative to TRIGTIME]
     T50: 0.031999945640564 +/- 
        Measured from: 0
                   to: 0.031999945640564     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 0.031999945640564 second)
        Measured from: 5.96046447753906e-08     
                   to: 0.0320000052452087     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.031999945640564     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.008719  -0.001350   0.000470  -0.000157
           0.001568   0.001084   0.000878   0.000630 [error]
 Peak      0.008719  -0.001350   0.000470  -0.000157
           0.001568   0.001084   0.000878   0.000630 [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 1.15e-09 2.47e-10 2.69e-11 3.19e-12 1.44e-09 1.42e-09   erg/cm2
              Error 5.72e-10 2.51e-10 5.25e-11 1.43e-11 7.68e-10 7.70e-10   erg/cm2
Peak flux Power-law 1.25e+00 1.56e-01 8.44e-03 4.79e-04 1.42e+00 1.42e+00   ph/cm2/s
              Error 6.15e-01 1.55e-01 1.60e-02 2.00e-03 7.18e-01 7.18e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.19e-09 3.33e-10 2.46e-14 2.02e-25 2.53e-09 2.52e-09   erg/cm2
              Error 7.73e-10 2.44e-10 2.62e-13 8.06e-21 9.29e-10 9.30e-10   erg/cm2
Peak flux Cutoff-PL 2.27e+00 2.39e-01 1.02e-05 4.95e-17 2.52e+00 2.51e+00   ph/cm2/s
              Error 8.03e-01 1.63e-01 9.57e-05 1.45e-12 8.91e-01 8.91e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   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    5.190    1.552    -      -           7.65e-04 1.15e-03   52.550 57
CPL   1.000    0.000      50.0    0.0      1.13e-03 0.00e+00   63.830 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    5.190    1.552    -      -           7.65e-04 1.15e-03   52.550 57
CPL   1.000    0.000      50.0    0.0      1.13e-03 0.00e+00   63.830 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    0.032    0.000    0.032
T90     0.032    0.000    0.032
T50     0.032    0.000    0.032
Peak    0.032    0.000    0.032

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   30.6890 -61.3478 0.0563   31.9  -14.9       0.0075     3.4  TRIG_01100848       
------------------------------------------
 
Foreground time interval of the image:
  0.000   0.032 (delta_t =   0.032 [sec])
Background time interval of the image:
-60.388  -7.388 (delta_t =  53.000 [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    0.000 sec. to    0.032 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 5.19034     ( -1.14152   1.96198 )
Norm@50keV  : 7.65480E-04    ( -0.000757368   0.00154501 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.55 using 59 PHA bins.
# Reduced chi-squared =         0.9219 for     57 degrees of freedom 
# Null hypothesis probability =   6.425659e-01
 
Photon flux (15-150 keV)    in 0.032 sec: 1.41709 ( -0.719984  0.715645 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.43722e-09 ( -7.28624e-10  8.06467e-10 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.032 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 1.13451E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.83 using 59 PHA bins.
# Reduced chi-squared =          1.140 for     56 degrees of freedom 
# Null hypothesis probability =   2.204609e-01
 
Photon flux (15-150 keV)    in 0.032 sec: 2.51509 2.53334 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.33681e-15 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.032 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -6.54024   ( 4.16701   6.54024 )
beta        : -5.32693    ( -1.90803   1.20739 )
Epeak [keV] : 9999.28      ( -9999.28 -9999.28 )
Norm@50keV   : 8.85405E-02    ( -0.0964772   0.216946 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.57 using 59 PHA bins.
# Reduced chi-squared =         0.9558 for     55 degrees of freedom 
# Null hypothesis probability =   5.680012e-01
 
Photon flux (15-150 keV)    in 0.032 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]    : 3.18545  (-0.727119  0.681642)
R^2/D10^2   : 201.343  (-197.802   658.772)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.75 using 59 PHA bins.
# Reduced chi-squared =         0.8202 for     57 degrees of freedom 
# Null hypothesis probability =   8.316337e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.732e-09   1.115e-09
25- 50  3.097e-10   2.379e-10
50-150  8.001e-13   1.338e-12
15-150  2.042e-09   1.269e-09
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 6.03623       (-2.13156      2.63519)
Norm        : 219.182       (-223.741     666.459)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.481e-09   8.933e-10
25- 50  2.787e-10   2.176e-10
50-150  3.445e-12   5.261e-12
15-150  1.763e-09   1.127e-09
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.23280        (-3.21091      196.774)
R1^2/D10^2  : 185.546        (-91.3173      -91.3173)
kT2 [keV]   : 200.000        (-200      -200)
R2^2/D10^2  : 1.46783E-05    (-1.35317e-05   -1.35317e-05)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.745e-09   1.021e+00
25- 50  3.212e-10   8.283e+00
50-150  8.860e-13   2.222e+02
15-150  2.067e-09   2.056e+02

Peak spectrum fit

Power-law model
Time interval is from    0.000 sec. to    0.032 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 5.19034     ( -1.14152   1.96198 )
Norm@50keV  : 7.65480E-04    ( -0.000757368   0.00154501 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.55 using 59 PHA bins.
# Reduced chi-squared =         0.9219 for     57 degrees of freedom 
# Null hypothesis probability =   6.425659e-01
 
Photon flux (15-150 keV)    in 0.032 sec: 1.41709 ( -0.719984  0.715645 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.43722e-09 ( -7.28624e-10  8.06467e-10 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    0.032 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 1.13451E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.83 using 59 PHA bins.
# Reduced chi-squared =          1.140 for     56 degrees of freedom 
# Null hypothesis probability =   2.204609e-01
 
Photon flux (15-150 keV)    in 0.032 sec: 2.51509 2.53334 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.33681e-15 ( 0  0 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    0.032 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -6.54024   ( 4.16701   6.54024 )
beta        : -5.32693    ( -1.90803   1.20739 )
Epeak [keV] : 9999.28      ( -9999.28 -9999.28 )
Norm@50keV   : 8.85405E-02    ( -0.0964772   0.216946 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.57 using 59 PHA bins.
# Reduced chi-squared =         0.9558 for     55 degrees of freedom 
# Null hypothesis probability =   5.680012e-01
 
Photon flux (15-150 keV)    in 0.032 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Single BB
 XSPEC: quit
 
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 3.18545  (-0.727119  0.681642)
R^2/D10^2   : 201.343  (-197.802   658.772)
(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  1.732e-09   1.153e-09
25- 50  3.097e-10   2.325e-10
50-150  8.001e-13   1.513e-12
15-150  2.042e-09   1.273e-09
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 6.03623       (-2.13156      2.63519)
Norm        : 219.182       (-223.741     666.459)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.481e-09   9.123e-10
25- 50  2.787e-10   2.344e-10
50-150  3.445e-12   5.277e-12
15-150  1.763e-09   1.152e-09
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.23280        (-3.21091      196.774)
R1^2/D10^2  : 185.546        (-91.3173      -91.3173)
kT2 [keV]   : 200.000        (-200      -200)
R2^2/D10^2  : 1.46783E-05    (-1.35317e-05   -1.35317e-05)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.745e-09   1.086e+00
25- 50  3.212e-10   8.899e+00
50-150  8.860e-13   2.179e+02
15-150  2.067e-09   2.082e+02
Plot creation:
Sun Apr  3 03:43:41 EDT 2022