batgrbproduct analysis for trigger=1102281

batgrbproduct Analysis for Trigger=1102281

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Wed Apr 13 16:27:18 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1102281/GCN5_download_cron
======================================================================

  Trigger: 01102281      Segment: 000

  BAT Trigger Time: 671438239.168   [s; MET]
      Trigger Stop: 671438247.36   [s; MET]
               UTC: 2022-04-12T06:36:50.220220    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 123.968083384208   Dec: 30.3220864406175  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.2
     Image Trigger?:     NO
     Rate S/N Ratio:     10.0498756211209  [ if not an image trigger ]
     Image S/N Ratio:    7.2

  Flight Position:   [ source = BAT ]
    RA: 123.968083384208   Dec: 30.3220864406175  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 123.974993466069   Dec: 30.3356832079264  [deg; J2000]  
        { 08h 15m 54.0s , +30d 20' 08.5" }
         +/- 1.94430849547545 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.794168162547211 [arcmin] (formal 1-sigma fit error)
    SNR: 11.7651292639426
 
  Angular difference between Flight and Ground position is 0.890845 arcmin
 
  Partial Coding Fraction: 0.9296875    [ including projection effects ]

  Duration
     T90: 41.6599999666214 +/- 6.99508914159456
        Measured from: -7.95199990272522
                   to: 33.7080000638962     [s; relative to TRIGTIME]
     T50: 21.1319998502731 +/- 6.06146645798245
        Measured from: 0.440000176429749
                   to: 21.5720000267029     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 6.87600004673004     
                   to: 7.87600004673004     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -11.0720000267029     
                   to: 38     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.231749   0.449268   0.253448   0.054492
           0.042252   0.043468   0.037807   0.032649 [error]
 Peak      0.019191   0.024928   0.017605   0.006125
           0.006250   0.006390   0.005508   0.004631 [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 8.16e-08 1.48e-07 2.05e-07 5.95e-07 5.90e-07 1.03e-06   erg/cm2
              Error 1.62e-08 1.89e-08 3.57e-08 2.14e-07 8.66e-08 2.46e-07   erg/cm2
Peak flux Power-law 1.74e-01 1.75e-01 1.24e-01 1.40e-01 5.28e-01 6.13e-01   ph/cm2/s
              Error 7.92e-02 4.95e-02 4.49e-02 1.07e-01 1.42e-01 1.70e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.07e-08 1.67e-07 2.10e-07 1.39e-07 5.36e-07 5.87e-07   erg/cm2
              Error 1.89e-08 2.59e-08 4.20e-08 2.30e-07 9.57e-08 2.29e-07   erg/cm2
Peak flux Cutoff-PL 1.76e-01 1.76e-01 1.23e-01 1.36e-01 5.29e-01 6.12e-01   ph/cm2/s
              Error 8.42e-02 5.34e-02 4.60e-02 1.35e-01 1.42e-01 1.84e-01   ph/cm2/s
 
Fluence        Band 6.97e-08 1.66e-07 2.11e-07 1.61e-07 5.36e-07 6.15e-07   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    1.525    0.212    -      -           1.27e-03 1.69e-04   60.640 57
CPL   0.432    1.074      66.7   62.2      4.87e-03 1.08e-02   56.530 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.498    0.503    -      -           4.23e-03 1.20e-03   56.150 57
CPL   1.492    0.000    9999.3    0.0      4.26e-03 0.00e+00   56.150 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: 15.552000 sec.
T50 in the 50-300 keV band: 6.848000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   49.072  -11.072   38.000
T90    41.660   -7.952   33.708
T50    21.132    0.440   21.572
Peak    1.000    6.876    7.876

Image

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

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  123.9750 +30.3357 0.0164   16.4   29.7       1.0256    11.8  TRIG_01102281       
------------------------------------------
 
Foreground time interval of the image:
-11.072  38.000 (delta_t =  49.072 [sec])
Background time interval of the image:
-239.168 -191.358 (delta_t =  47.810 [sec])
-190.168 -11.072 (delta_t = 179.096 [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  -11.072 sec. to   38.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.52540     ( -0.210286   0.214611 )
Norm@50keV  : 1.27229E-03    ( -0.000170358   0.000168617 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.64 using 59 PHA bins.
# Reduced chi-squared =          1.064 for     57 degrees of freedom 
# Null hypothesis probability =   3.459605e-01
 
Photon flux (15-150 keV)    in 49.07 sec: 0.159942 ( -0.0202287  0.0202417 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.89875e-07 ( -8.58092e-08  8.7378e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from  -11.072 sec. to   38.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.431997     ( -1.213   0.934059 )
Epeak [keV] : 66.7423      ( -16.0118 108.474 )
Norm@50keV  : 4.86879E-03    ( -0.00486879   0.0166458 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.53 using 59 PHA bins.
# Reduced chi-squared =          1.009 for     56 degrees of freedom 
# Null hypothesis probability =   4.550708e-01
 
Photon flux (15-150 keV)    in 49.07 sec: 0.153340 ( -0.021019  0.021016 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.35859e-07 ( -9.33567e-08  9.80909e-08 ) ergs/cm2
 
Band function
Time interval is from  -11.072 sec. to   38.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.431871   ( -0.931402   1.05423 )
beta        : -10.0000    ( 10   20 )
Epeak [keV] : 66.7286      ( -14.3461 108.479 )
Norm@50keV   : 4.86971E-03    ( -0.00486971   0.0166672 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.53 using 59 PHA bins.
# Reduced chi-squared =          1.028 for     55 degrees of freedom 
# Null hypothesis probability =   4.176312e-01
 
Photon flux (15-150 keV)    in 49.07 sec: 0.154127 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.36477e-07 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.5168  (-1.85496  2.23068)
R^2/D10^2   : 2.68411E-02  (-0.0112748   0.0185991)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.56 using 59 PHA bins.
# Reduced chi-squared =          1.097 for     57 degrees of freedom 
# Null hypothesis probability =   2.855384e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.097e-08   1.208e-08
25- 50  1.829e-07   3.312e-08
50-150  2.160e-07   5.923e-08
15-150  4.499e-07   8.281e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 191.297       (-83.9627      -187.245)
Norm        : 0.657948       (-0.0833582     0.0940024)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.082e-08   4.475e-08
25- 50  1.547e-07   8.288e-08
50-150  3.346e-07   1.844e-07
15-150  5.701e-07   3.091e-07
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.36045        (-4.57751      3.80457)
R1^2/D10^2  : 8.71901E-02        (-0.0524527      0.742648)
kT2 [keV]   : 23.3005        (-19.9971      114.319)
R2^2/D10^2  : 2.55005E-03    (-0.00225432   0.0147754)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.800e-08   3.891e-08
25- 50  1.721e-07   8.896e-08
50-150  3.029e-07   1.785e-07
15-150  5.429e-07   2.738e-07

Peak spectrum fit

Power-law model
Time interval is from    6.876 sec. to    7.876 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.49791     ( -0.496326   0.508911 )
Norm@50keV  : 4.23488E-03    ( -0.00121931   0.00117772 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.15 using 59 PHA bins.
# Reduced chi-squared =         0.9851 for     57 degrees of freedom 
# Null hypothesis probability =   5.069042e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.528384 ( -0.142296  0.142512 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.01883e-08 ( -1.24152e-08  1.28246e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    6.876 sec. to    7.876 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.49191     (     )
Epeak [keV] : 9999.28      (   )
Norm@50keV  : 4.26163E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.15 using 59 PHA bins.
# Reduced chi-squared =          1.003 for     56 degrees of freedom 
# Null hypothesis probability =   4.691188e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.528787 ( -0.142826  0.141367 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.99811e-08 ( -1.2968e-08  1.28951e-08 ) ergs/cm2
 
Band function
Time interval is from    6.876 sec. to    7.876 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.21768   ( 1.21768   1.21768 )
beta        : -1.49788    ( 1.49788   0.496313 )
Epeak [keV] : 28.1462      ( -28.1152 -28.1152 )
Norm@50keV   : 8.77822E-03    ( -0.00877962   0.155051 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.15 using 59 PHA bins.
# Reduced chi-squared =          1.021 for     55 degrees of freedom 
# Null hypothesis probability =   4.315085e-01
 
Photon flux (15-150 keV)    in 1 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]    : 15.4499  (-5.102  7.60858)
R^2/D10^2   : 5.30513E-02  (-0.0527999   0.161022)
(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  2.637e-09   1.515e-09
25- 50  1.076e-08   6.435e-09
50-150  1.771e-08   1.127e-08
15-150  3.111e-08   1.714e-08
Thermal bremsstrahlung (OTTB)
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-199.363      -199.363)
Norm        : 2.15546       (-0.576068     0.576266)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.367e-09   3.310e-09
25- 50  1.032e-08   6.315e-09
50-150  2.264e-08   1.383e-08
15-150  3.834e-08   2.316e-08
Double BB
XSPEC12>exit
 XSPEC: quit
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.08641        (-3.08438      7.24122)
R1^2/D10^2  : 1.85138        (-1.71223      216.958)
kT2 [keV]   : 23.5793        (-9.30865      -23.5842)
R2^2/D10^2  : 1.05651E-02    (-0.010504   0.0395843)
------------------------------------------------------------
 Reduced chi-squared = 
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.871e-09   3.594e-09
25- 50  9.067e-09   4.868e-09
50-150  2.414e-08   1.501e-08
15-150  3.908e-08   2.112e-08
Plot creation:
Wed Apr 13 16:39:00 EDT 2022