batgrbproduct analysis for trigger=1004168

batgrbproduct Analysis for Trigger=1004168

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 v2.48
    Process Start Time (local time): Sat Jul 30 00:57:02 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1004168
======================================================================

  Trigger: 01004168      Segment: 000

  BAT Trigger Time: 626204000.704   [s; MET]
      Trigger Stop: 626204001.088   [s; MET]
               UTC: 2020-11-04T17:32:54.779360    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 5.21659807530782   Dec: 7.82039469041078  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.43
     Image Trigger?:     NO
     Rate S/N Ratio:     44.7772263544762  [ if not an image trigger ]
     Image S/N Ratio:    11.43

  Flight Position:   [ source = BAT ]
    RA: 5.21659807530782   Dec: 7.82039469041078  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 5.21483624812214   Dec: 7.83453810714096  [deg; J2000]  
        { 00h 20m 51.6s , +07d 50' 04.3" }
         +/- 0.814644087139038 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.313788239006559 [arcmin] (formal 1-sigma fit error)
    SNR: 40.7668429674515
 
  Angular difference between Flight and Ground position is 0.855043 arcmin
 
  Partial Coding Fraction: 0.53125    [ including projection effects ]

  Duration
     T90: 8.6599999666214 +/- 0.161839373016547
        Measured from: -8.32000005245209
                   to: 0.339999914169312     [s; relative to TRIGTIME]
     T50: 5.27199995517731 +/- 0.211357516693095
        Measured from: -6.91600000858307
                   to: -1.64400005340576     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -8.51999998092651     
                   to: -7.51999998092651     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -8.8639999628067     
                   to: 0.879999995231628     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.723391   1.027291   0.814917   0.233022
           0.030226   0.033323   0.029938   0.024122 [error]
 Peak      0.131294   0.184914   0.128900   0.031950
           0.010772   0.012111   0.010315   0.007536 [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 2.42e-07 4.50e-07 6.47e-07 1.97e-06 1.84e-06 3.31e-06   erg/cm2
              Error 1.73e-08 1.88e-08 3.04e-08 2.09e-07 7.39e-08 2.27e-07   erg/cm2
Peak flux Power-law 1.41e+00 1.37e+00 9.27e-01 9.83e-01 4.11e+00 4.69e+00   ph/cm2/s
              Error 1.78e-01 1.06e-01 8.63e-02 1.87e-01 3.05e-01 3.40e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.41e-07 2.97e-07 6.48e-07 1.97e-06 1.83e-06 3.24e-06   erg/cm2
              Error 1.83e-08 3.01e-08 3.26e-08 3.97e-07 7.83e-08 4.46e-07   erg/cm2
Peak flux Cutoff-PL 1.41e+00 1.37e+00 9.29e-01 9.80e-01 4.10e+00 4.66e+00   ph/cm2/s
              Error 1.80e-01 1.16e-01 9.22e-02 2.79e-01 3.05e-01 4.51e-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    1.476    0.069    -      -           1.98e-02 7.39e-04   61.170 57
CPL   1.426    0.183     563.6    0.0      2.09e-02 3.98e-03   61.250 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.563    0.127    -      -           3.23e-02 2.39e-03   55.600 57
CPL   1.561    0.322    9984.9    0.0      3.24e-02 2.05e-02   55.600 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: 8.640000 sec.
T50 in the 50-300 keV band: 5.312000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    9.744   -8.864    0.880
T90     8.660   -8.320    0.340
T50     5.272   -6.916   -1.644
Peak    1.000   -8.520   -7.520

Click here for the BAT GCN circular template

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

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
    5.2148     7.8345   0.0047    33.6722   153.7123         2.8816942     40.767 TRIG_01004168                 
 
Foreground time interval of the image:
 -8.864   0.880 (delta_t =   9.744 [sec])
Background time interval of the image:
-54.003  -8.864 (delta_t =  45.139 [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

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)

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   -8.864 sec. to    0.880 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.47594     ( -0.0692759   0.0693829 )
Norm@50keV  : 1.98277E-02    ( -0.000739104   0.000738696 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   61.17     using 59 bins.
 Reduced chi-squared = 1.07316
# Null hypothesis probability of 3.29e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 9.744 sec: 2.45966 ( -0.09793  0.09827 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.84047e-06 ( -7.38294e-08  7.40422e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -8.864 sec. to    0.880 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.42588     ( -0.271109   0.0941255 )
Epeak [keV] : 563.601      ( -994.385 -994.385 )
Norm@50keV  : 2.09393E-02    ( -0.00129308   0.00666427 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   61.25     using 59 bins.
 Reduced chi-squared = 1.09375
# Null hypothesis probability of 2.93e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 9.744 sec: 2.45650 ( -0.10621  0.10101 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.83648e-06 ( -7.94182e-08  7.7146e-08 ) ergs/cm2

Band function

Time interval is from   -8.864 sec. to    0.880 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]    : 16.3038  (  )
R^2/D10^2   : 0.203646  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  233.61     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.04e-23 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.086e-07   7.941e-09
25- 50  4.643e-07   2.343e-08
50-150  8.686e-07   6.071e-08
15-150  1.442e-06   6.528e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-13.254      -200)
Norm        : 10.1117       (-0.376043     0.376043)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   69.72     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.20e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.453e-07   9.695e-09
25- 50  4.720e-07   1.954e-08
50-150  1.035e-06   4.385e-08
15-150  1.752e-06   7.552e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.84317        (-1.10085      1.21959)
R1^2/D10^2  : 1.72962        (-0.623604      1.13325)
kT2 [keV]   : 31.2060        (-4.83203      8.11094)
R2^2/D10^2  : 1.74131E-02    (-0.00906675   0.0138818)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   70.39     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.91e-02 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.099e-07   2.582e-08
25- 50  4.703e-07   4.326e-08
50-150  1.146e-06   1.795e-07
15-150  1.827e-06   2.241e-07

Peak spectrum fit

Power-law model

Time interval is from   -8.520 sec. to   -7.520 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.56340     ( -0.126402   0.127552 )
Norm@50keV  : 3.23162E-02    ( -0.00240035   0.00238945 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   55.60     using 59 bins.
 Reduced chi-squared = 0.975439
# Null hypothesis probability of 5.28e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 4.10720 ( -0.30493  0.30549 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.03697e-07 ( -2.42432e-08  2.43983e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -8.520 sec. to   -7.520 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.56117     ( -0.444341   0.198917 )
Epeak [keV] : 9984.86      ( -9955.86 -9955.86 )
Norm@50keV  : 3.24023E-02    ( -0.0151158   0.0258679 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   55.60     using 59 bins.
 Reduced chi-squared = 0.992857
# Null hypothesis probability of 4.90e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 4.10436 ( -0.3023  0.30752 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.03235e-07 ( -2.59988e-08  2.46866e-08 ) ergs/cm2

Band function

Time interval is from   -8.520 sec. to   -7.520 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]    : 14.2514  (-1.33877  1.52066)
R^2/D10^2   : 0.543786  (-0.165984   0.232197)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  110.33     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.92e-05 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.329e-08   3.485e-09
25- 50  8.814e-08   8.625e-09
50-150  1.189e-07   1.798e-08
15-150  2.304e-07   2.135e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.278       (-58.9648      -199.329)
Norm        : 16.6862       (-1.20078     1.20172)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   56.53     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.93e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.155e-08   3.475e-09
25- 50  7.993e-08   9.270e-09
50-150  1.753e-07   4.722e-08
15-150  2.968e-07   5.500e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.60278        (-1.78734      1.91787)
R1^2/D10^2  : 3.55996        (-1.80186      5.79412)
kT2 [keV]   : 31.1076        (-8.21886      20.9345)
R2^2/D10^2  : 2.71679E-02    (-0.0213504   0.0564184)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   58.84     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.37e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.975e-08   9.640e-09
25- 50  8.230e-08   1.801e-08
50-150  1.821e-07   8.786e-08
15-150  3.042e-07   9.530e-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: 1.47594     ( -0.0692759   0.0693829 )
Norm@50keV  : 1.98277E-02    ( -0.000739104   0.000738696 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   61.17     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.29e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 9.744 sec: 2.45960 ( -0.0979205  0.0982644 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.84023e-06 ( -7.38386e-08  7.41016e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.44650     ( -0.266147   0.092738 )
Epeak [keV] : 998.114      ( -999.12 -999.12 )
Norm@50keV  : 2.04821E-02    ( -0.00128999   0.00666817 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   61.15     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.96e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 9.744 sec: 2.45048 ( -0.10096  0.10627 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.8346e-06 ( -7.7572e-08  8.02029e-08 ) 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)  = 4.50e-07
S(50-100 keV) = 6.47e-07

T90 vs. Hardness ratio plot

T90                                   = 8.6599999666214 sec.
Hardness ratio (energy fluence ratio) = 1.43778

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.4201
Count Ratio (50-100 keV) / (15-25 keV) = 1.12652

Mask shadow pattern

IMX = -5.973174420300765E-01, IMY = -2.950537594947298E-01

TIME vs. PHA plot around the trigger time

TIME vs. DetID plot around the trigger time

100 us light curve (15-350 keV)

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:
-54.003400 -8.864000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
326.2541  38.2983    3.4  34.0 -116.1   0.4812   3.4    4.1	Cyg X-2

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

Time interval of the image:
-8.864000 0.880000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
326.0783  38.3954    6.3  34.1 -115.8   0.1447   1.8    6.2	Cyg X-2                       
 79.9856  38.8368    2.4  51.6   32.1   1.2255   4.8 ------	UNKNOWN                       
 59.2990  34.0046    3.0  38.6   48.3   0.4055   3.8 ------	UNKNOWN                       
 38.8391  22.9962    2.8  29.7   82.8   0.3223   4.1 ------	UNKNOWN                       
  5.2148   7.8345    0.3  33.7  153.7   2.8819  40.8  564.1	UNKNOWN                       
356.7526  -3.0191    2.2  46.0  163.4   0.6784   5.1  266.0	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
87.196600 509.896590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
326.2023  38.4097    4.6  46.5  -26.4   1.6218   2.5    5.5	Cyg X-2                       
 42.3986  28.2070    2.8  40.6   71.4   5.6397   4.2 ------	UNKNOWN                       
352.7095 -41.1477    2.4  50.3 -151.5   4.6019   4.9 ------	UNKNOWN                       
342.5808 -41.1504    3.1  53.2 -142.5   7.7994   3.7 ------	UNKNOWN                       
335.6855 -30.9532    2.6  48.0 -129.0   7.5753   4.4 ------	UNKNOWN

Plot creation:
Sat Jul 30 07:26:36 EDT 2022