batgrbproduct analysis for trigger=929744

batgrbproduct Analysis for Trigger=929744

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done using the HEASARC data.
3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Nov 27 19:36:16 EST 2019
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger929744
======================================================================

  Trigger: 00929744      Segment: 000

  BAT Trigger Time: 592891764.672   [s; MET]
      Trigger Stop: 592891781.056   [s; MET]
               UTC: 2019-10-16T04:09:00.915720    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 30.2956005884388   Dec: 24.5009472918732  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    17.91
     Image Trigger?:     NO
     Rate S/N Ratio:     19.3907194296653  [ if not an image trigger ]
     Image S/N Ratio:    17.91

  Flight Position:   [ source = BAT ]
    RA: 30.2956005884388   Dec: 24.5009472918732  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 30.2760895965852   Dec: 24.4978632545997  [deg; J2000]  
        { 02h 01m 06.3s , +24d 29' 52.3" }
         +/- 0.933854488414703 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.268579828678173 [arcmin] (formal 1-sigma fit error)
    SNR: 33.5410497434109
 
  Angular difference between Flight and Ground position is 1.081212 arcmin
 
  Partial Coding Fraction: 0.6484375    [ including projection effects ]

  Duration
     T90: 126.679999947548 +/- 7.72798026488531
        Measured from: -28.9760000705719
                   to: 97.703999876976     [s; relative to TRIGTIME]
     T50: 46.107999920845 +/- 3.49813667098309
        Measured from: -9.86000001430511
                   to: 36.2479999065399     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -7.75200009346008     
                   to: -6.75200009346008     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -42.8280000686646     
                   to: 118.815999984741     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.807508   3.405934   2.472948   0.588522
           0.099742   0.104365   0.092918   0.082995 [error]
 Peak      0.051558   0.067499   0.046552   0.014588
           0.008435   0.008721   0.007994   0.006922 [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 8.86e-07 1.50e-06 1.92e-06 4.98e-06 5.67e-06 9.29e-06   erg/cm2
              Error 5.97e-08 5.85e-08 9.66e-08 5.55e-07 2.27e-07 6.20e-07   erg/cm2
Peak flux Power-law 5.32e-01 4.92e-01 3.15e-01 3.11e-01 1.47e+00 1.65e+00   ph/cm2/s
              Error 1.19e-01 7.24e-02 6.68e-02 1.29e-01 2.14e-01 2.49e-01   ph/cm2/s
 
Fluence   Cutoff-PL 8.53e-07 1.52e-06 1.94e-06 3.73e-06 5.59e-06 8.05e-06   erg/cm2
              Error 7.37e-08 6.71e-08 1.02e-07 1.28e-06 2.62e-07 1.35e-06   erg/cm2
Peak flux Cutoff-PL 4.92e-01 5.30e-01 3.21e-01 1.40e-01 1.43e+00 1.48e+00   ph/cm2/s
              Error 1.37e-01 9.70e-02 7.44e-02 1.77e-01 2.21e-01 2.91e-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    1.637    0.070    -      -           3.77e-03 1.42e-04   39.730 57
CPL   1.449    0.251     148.0  -43.9      4.67e-03 1.35e-03   38.270 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.642    0.256    -      -           1.13e-02 1.84e-03   44.520 57
CPL   1.000    0.948      69.9  -22.5      2.55e-02 6.46e-02   43.440 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: 122.816000 sec.
T50 in the 50-300 keV band: 43.520000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  161.644  -42.828  118.816
T90   126.680  -28.976   97.704
T50    46.108   -9.860   36.248
Peak    1.000   -7.752   -6.752

Click here for the BAT GCN circular template

Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte

Special notes of this burst

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
   30.2761    24.4979   0.0057    26.8488    52.3059         9.3946127     33.541 TRIG_00929744                 
 
Foreground time interval of the image:
-42.828 118.816 (delta_t = 161.644 [sec])
Background time interval of the image:
-239.672 -42.828 (delta_t = 196.844 [sec])

Lightcurves

Notes:

1) The mask-weighted light curves are using the flight position.
2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
3) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
4) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
5) Time of each bin is in the middle of the bin.

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

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 16.384000

8 ms binning

From T100_start-3 s to T100_start+3 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 16.384000

2 ms binning

From T100_start-1 s to T100_start+1 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 16.384000

SN=5 or 10 sec. binning (whichever binning is satisfied first)

SN=5 or 10 sec. binning (T < 200 sec)

Quad-rate summed light curves (from T0-300s to T0+1000s)

Spectral Evolution

Spectra

Notes:

1) The fitting includes the systematic errors.
2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.

Time averaged spectrum fit using the average DRM

Power-law model

Time interval is from  -42.828 sec. to  118.816 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.63699     ( -0.0700279   0.0703817 )
Norm@50keV  : 3.77248E-03    ( -0.000142206   0.000141702 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.73 using 59 PHA bins.
# Reduced chi-squared =         0.6970 for     57 degrees of freedom 
# Null hypothesis probability =   9.602616e-01
 
Photon flux (15-150 keV)    in 161.6 sec: 0.490519 ( -0.019058  0.019107 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.6782e-06 ( -2.27014e-07  2.27904e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -42.828 sec. to  118.816 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.44873     ( -0.282171   0.220547 )
Epeak [keV] : 148.007      ( -60.1408 -148.008 )
Norm@50keV  : 4.67269E-03    ( -0.000989484   0.00171448 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.27 using 59 PHA bins.
# Reduced chi-squared =         0.6835 for     56 degrees of freedom 
# Null hypothesis probability =   9.662955e-01
 
Photon flux (15-150 keV)    in 161.6 sec: 0.484145 ( -0.020972  0.020998 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.58536e-06 ( -2.6206e-07  2.61209e-07 ) ergs/cm2

Band function

Time interval is from  -42.828 sec. to  118.816 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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]    : 14.3895  (  )
R^2/D10^2   : 5.99631E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         199.33 using 59 PHA bins.
# Reduced chi-squared =         3.4970 for     57 degrees of freedom 
# Null hypothesis probability =   1.136590e-17
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.226e-07   3.054e-08
25- 50  1.614e-06   7.393e-08
50-150  2.232e-06   1.883e-07
15-150  4.269e-06   1.786e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 167.247       (-29.7833      -166.105)
Norm        : 1.98349       (-0.0854951     0.0935526)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.37 using 59 PHA bins.
# Reduced chi-squared =         0.6908 for     57 degrees of freedom 
# Null hypothesis probability =   9.637505e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.149e-07   5.042e-08
25- 50  1.533e-06   1.249e-07
50-150  3.160e-06   8.973e-07
15-150  5.508e-06   9.753e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.42313        (-0.911069      1.03675)
R1^2/D10^2  : 0.710350        (-0.288288      0.550986)
kT2 [keV]   : 23.9549        (-2.82921      4.08242)
R2^2/D10^2  : 7.82719E-03    (-0.00346828   0.00481452)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.59 using 59 PHA bins.
# Reduced chi-squared =         0.8107 for     55 degrees of freedom 
# Null hypothesis probability =   8.409799e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.185e-07   1.195e-07
25- 50  1.510e-06   1.358e-07
50-150  3.154e-06   3.280e-07
15-150  5.482e-06   5.414e-07

Peak spectrum fit

Power-law model

Time interval is from   -7.752 sec. to   -6.752 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.64225     ( -0.25073   0.261689 )
Norm@50keV  : 1.12722E-02    ( -0.00185889   0.00181848 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.52 using 59 PHA bins.
# Reduced chi-squared =         0.7811 for     57 degrees of freedom 
# Null hypothesis probability =   8.855612e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.46820 ( -0.21403  0.21406 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.04932e-07 ( -1.82418e-08  1.86798e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -7.752 sec. to   -6.752 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.999609     ( -1.34157   0.553449 )
Epeak [keV] : 69.9379      ( -24.9489 -69.9378 )
Norm@50keV  : 2.54901E-02    ( -0.0156394   0.113619 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.44 using 59 PHA bins.
# Reduced chi-squared =         0.7757 for     56 degrees of freedom 
# Null hypothesis probability =   8.896878e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.43419 ( -0.22191  0.22098 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.8485e-08 ( -2.0288e-08  2.13159e-08 ) ergs/cm2

Band function

Time interval is from   -7.752 sec. to   -6.752 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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]    : 12.5028  (-2.0239  2.4448)
R^2/D10^2   : 0.316043  (-0.15054   0.280126)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.84 using 59 PHA bins.
# Reduced chi-squared =         0.8919 for     57 degrees of freedom 
# Null hypothesis probability =   7.040549e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.047e-08   2.926e-09
25- 50  3.456e-08   7.360e-09
50-150  3.335e-08   1.164e-08
15-150  7.838e-08   1.755e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 141.384       (-65.0797      -140.462)
Norm        : 6.14283       (-0.974714     1.26058)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.61 using 59 PHA bins.
# Reduced chi-squared =         0.7650 for     57 degrees of freedom 
# Null hypothesis probability =   9.040833e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.585e-08   8.885e-09
25- 50  2.912e-08   1.599e-08
50-150  5.606e-08   3.432e-08
15-150  1.010e-07   5.850e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.52481        (-2.95914      5.46898)
R1^2/D10^2  : 3.17216        (-2.73919      88.4276)
kT2 [keV]   : 18.2763        (-5.27262      143.673)
R2^2/D10^2  : 6.41788E-02    (-0.063766   0.18651)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.76 using 59 PHA bins.
# Reduced chi-squared =         0.7956 for     55 degrees of freedom 
# Null hypothesis probability =   8.622263e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.559e-08   8.465e-09
25- 50  2.935e-08   1.533e-08
50-150  4.922e-08   2.911e-08
15-150  9.416e-08   5.025e-08

Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)

Power-law model

 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.63699     ( -0.0700279   0.0703817 )
Norm@50keV  : 3.77248E-03    ( -0.000142206   0.000141702 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.73 using 59 PHA bins.
# Reduced chi-squared =         0.6970 for     57 degrees of freedom 
# Null hypothesis probability =   9.602616e-01
 
Photon flux (15-150 keV)    in 161.6 sec: 0.490502 ( -0.0190569  0.0191047 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.67743e-06 ( -2.27059e-07  2.27919e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.44873     ( -0.282171   0.220547 )
Epeak [keV] : 148.008      ( -60.1406 -148.008 )
Norm@50keV  : 4.67268E-03    ( -0.000989484   0.00171448 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.27 using 59 PHA bins.
# Reduced chi-squared =         0.6835 for     56 degrees of freedom 
# Null hypothesis probability =   9.662955e-01
 
Photon flux (15-150 keV)    in 161.6 sec: 0.484070 ( -0.020963  0.020988 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.58734e-06 ( -2.626e-07  2.61356e-07 ) ergs/cm2

Band function

 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

S(25-50 keV) vs. S(50-100 keV) plot

S(25-50 keV)  = 1.50e-06
S(50-100 keV) = 1.92e-06

T90 vs. Hardness ratio plot

T90                                   = 126.679999947548 sec.
Hardness ratio (energy fluence ratio) = 1.28

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.21315
Count Ratio (50-100 keV) / (15-25 keV) = 0.880834

Mask shadow pattern

IMX = 3.095179242538902E-01, IMY = -4.005542555865793E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 16.384000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 16.384000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 16.384000

Spacecraft aspect plot

Bright source in the pre-burst/pre-slew/post-slew images

Pre-burst image of 15-350 keV band

Time interval of the image:
-239.672000 -42.828000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
325.9643  38.2031   16.7  35.6  -75.1  -0.3733  -0.7   12.1	Cyg X-2                       
 37.6460  43.7343    2.8  38.1   20.4   1.5298   4.2 ------	UNKNOWN                       
  3.5991  33.8738    2.9  13.8  -16.1   0.8896   4.0 ------	UNKNOWN                       
334.8059 -12.9806    3.1  42.4 -162.6   1.3646   3.7 ------	UNKNOWN                       
  5.7115  71.8683    2.7  51.7  -21.6   2.8564   4.2 ------	UNKNOWN                       
346.9930  66.2259    2.7  46.9  -31.2   2.2069   4.2 ------	UNKNOWN

Pre-slew background subtracted image of 15-350 keV band

Time interval of the image:
-42.828000 118.816000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
326.3358  38.2995   12.0  35.3  -74.7  -0.4929  -1.0    7.8	Cyg X-2                       
 30.2761  24.4979    0.3  26.8   52.3   9.3951  33.5 ------	UNKNOWN                       
 11.4599  -3.8546    2.4  26.0  133.7   1.3055   4.9 ------	UNKNOWN                       
333.1286 -26.0983    3.0  53.9 -171.3   2.6527   3.9 ------	UNKNOWN                       
348.6010  27.6061    2.5  13.9  -78.8   1.0691   4.7 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:

Plot creation:
Wed Nov 27 21:53:28 EST 2019