batgrbproduct analysis for trigger=1004239

batgrbproduct Analysis for Trigger=1004239

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 00:53:44 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1004239
======================================================================

  Trigger: 01004239      Segment: 000

  BAT Trigger Time: 626247096.32   [s; MET]
      Trigger Stop: 626247097.344   [s; MET]
               UTC: 2020-11-05T05:31:10.392500    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 245.626275813377   Dec: 12.7301449302437  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    24.04
     Image Trigger?:     NO
     Rate S/N Ratio:     222.506179689464  [ if not an image trigger ]
     Image S/N Ratio:    24.04

  Flight Position:   [ source = BAT ]
    RA: 245.626275813377   Dec: 12.7301449302437  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 245.610883088777   Dec: 12.734105095692  [deg; J2000]  
        { 16h 22m 26.6s , +12d 44' 02.8" }
         +/- 0.614656821841044 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.147062150395927 [arcmin] (formal 1-sigma fit error)
    SNR: 60.9637476970861
 
  Angular difference between Flight and Ground position is 0.931663 arcmin
 
  Partial Coding Fraction: 0.609375    [ including projection effects ]

  Duration
     T90: 33.6799999475479 +/- 4.02717970554488
        Measured from: -0.820000052452087
                   to: 32.8599998950958     [s; relative to TRIGTIME]
     T50: 8.67999994754791 +/- 0.348390612572339
        Measured from: 1.29199993610382
                   to: 9.97199988365173     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.763999938964844     
                   to: 1.76399993896484     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.85199999809265     
                   to: 72.107999920845     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     3.203238   5.706714   5.917301   1.893654
           0.073136   0.081597   0.079320   0.068540 [error]
 Peak      0.319772   0.561488   0.706670   0.238566
           0.013278   0.017109   0.019192   0.014970 [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 9.89e-07 2.35e-06 4.43e-06 2.03e-05 1.20e-05 2.80e-05   erg/cm2
              Error 4.16e-08 5.74e-08 8.68e-08 9.68e-07 2.27e-07 9.93e-07   erg/cm2
Peak flux Power-law 2.82e+00 4.05e+00 4.32e+00 8.56e+00 1.39e+01 1.98e+01   ph/cm2/s
              Error 1.93e-01 1.66e-01 1.51e-01 6.67e-01 4.51e-01 7.44e-01   ph/cm2/s
 
Fluence   Cutoff-PL 9.37e-07 2.35e-06 4.52e-06 1.63e-05 1.19e-05 2.41e-05   erg/cm2
              Error 5.73e-08 5.89e-08 1.10e-07 2.62e-06 2.39e-07 2.64e-06   erg/cm2
Peak flux Cutoff-PL 2.60e+00 4.09e+00 4.47e+00 6.55e+00 1.37e+01 1.77e+01   ph/cm2/s
              Error 2.60e-01 1.73e-01 1.97e-01 1.47e+00 4.69e-01 1.55e+00   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    1.084    0.035    -      -           1.52e-02 2.89e-04   40.700 57
CPL   0.900    0.141     368.7  499.0      1.81e-02 2.33e-03   35.660 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.906    0.058    -      -           1.21e-01 3.91e-03   54.330 57
CPL   0.627    0.239     295.7  564.1      1.59e-01 3.63e-02   50.170 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: 22.912000 sec.
T50 in the 50-300 keV band: 6.848000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   74.960   -2.852   72.108
T90    33.680   -0.820   32.860
T50     8.680    1.292    9.972
Peak    1.000    0.764    1.764

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
  245.6109    12.7341   0.0031    23.1513  -102.0465        16.6180069     60.964 TRIG_01004239                 
 
Foreground time interval of the image:
 -2.852  72.108 (delta_t =  74.960 [sec])
Background time interval of the image:
-239.320  -2.852 (delta_t = 236.468 [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   -2.852 sec. to   72.108 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.08366     ( -0.0348096   0.0346596 )
Norm@50keV  : 1.52385E-02    ( -0.000289117   0.000288631 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   40.70     using 59 bins.
 Reduced chi-squared = 0.714035
# Null hypothesis probability of 9.49e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 74.96 sec: 1.76487 ( -0.03547  0.03554 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.20072e-05 ( -2.27052e-07  2.27145e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -2.852 sec. to   72.108 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.899877     ( -0.144482   0.138074 )
Epeak [keV] : 368.741      ( -133.605 864.398 )
Norm@50keV  : 1.81106E-02    ( -0.00210495   0.00256062 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   35.66     using 59 bins.
 Reduced chi-squared = 0.636786
# Null hypothesis probability of 9.84e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 74.96 sec: 1.74341 ( -0.03864  0.03878 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.19149e-05 ( -2.38745e-07  2.38278e-07 ) ergs/cm2

Band function

Time interval is from   -2.852 sec. to   72.108 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]    : 22.8168  (  )
R^2/D10^2   : 5.41381E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  467.85     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.13e-66 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.844e-07   1.439e-08
25- 50  2.076e-06   5.997e-08
50-150  8.075e-06   2.136e-07
15-150  1.053e-05   2.174e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 7.65004       (     )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  605.00     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.34e-92 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.428e-06   2.961e-08
25- 50  2.747e-06   5.397e-08
50-150  6.024e-06   1.128e-07
15-150  1.020e-05   2.061e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.90384        (-0.789206      0.85944)
R1^2/D10^2  : 0.594510        (-0.143501      0.202026)
kT2 [keV]   : 35.7468        (-2.65548      3.44462)
R2^2/D10^2  : 1.12377E-02    (-0.00285769   0.00323134)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   38.92     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.50e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.342e-07   6.072e-08
25- 50  2.419e-06   9.932e-08
50-150  8.697e-06   3.823e-07
15-150  1.195e-05   4.310e-07

Peak spectrum fit

Power-law model

Time interval is from    0.764 sec. to    1.764 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.906476     ( -0.058032   0.0577894 )
Norm@50keV  : 0.120703    ( -0.00391615   0.00390916 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   54.33     using 59 bins.
 Reduced chi-squared = 0.953158
# Null hypothesis probability of 5.76e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 13.8548 ( -0.4505  0.4508 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.35136e-06 ( -4.84033e-08  4.85174e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.764 sec. to    1.764 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.627483     ( -0.246698   0.231619 )
Epeak [keV] : 295.716      ( -109.974 1018.25 )
Norm@50keV  : 0.158563    ( -0.0308289   0.0417627 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   50.17     using 59 bins.
 Reduced chi-squared = 0.895893
# Null hypothesis probability of 6.94e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 13.6946 ( -0.4689  0.4692 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.33706e-06 ( -5.06186e-08  5.04624e-08 ) ergs/cm2

Band function

Time interval is from    0.764 sec. to    1.764 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]    : 23.8244  (  )
R^2/D10^2   : 0.400376  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  168.48     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.98e-13 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.047e-08   2.395e-09
25- 50  2.239e-07   1.020e-08
50-150  9.474e-07   4.750e-08
15-150  1.212e-06   4.800e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 54.5655       (     )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  372.31     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.68e-48 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.359e-07   4.900e-09
25- 50  2.614e-07   9.150e-09
50-150  5.732e-07   2.060e-08
15-150  9.705e-07   3.250e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.33283        (-1.29671      1.6026)
R1^2/D10^2  : 6.75529        (-3.08659      6.50052)
kT2 [keV]   : 32.5007        (-2.9588      4.22194)
R2^2/D10^2  : 0.140313    (-0.0453523   0.0502743)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   50.87     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.33e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.312e-08   1.384e-08
25- 50  2.317e-07   2.290e-08
50-150  1.028e-06   7.580e-08
15-150  1.343e-06   9.500e-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: 1.08366     ( -0.0348096   0.0346596 )
Norm@50keV  : 1.52385E-02    ( -0.000289117   0.000288631 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   40.70     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.49e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 74.96 sec: 1.76488 ( -0.0354625  0.0355298 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.20058e-05 ( -2.26926e-07  2.27127e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.899877     ( -0.144482   0.138074 )
Epeak [keV] : 368.741      ( -133.605 2186.18 )
Norm@50keV  : 1.81106E-02    ( -0.00210495   0.00256062 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   35.66     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.84e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 74.96 sec: 1.74331 ( -0.03862  0.03877 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.19204e-05 ( -2.39272e-07  2.38298e-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)  = 2.35e-06
S(50-100 keV) = 4.43e-06

T90 vs. Hardness ratio plot

T90                                   = 33.6799999475479 sec.
Hardness ratio (energy fluence ratio) = 1.88511

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.78155
Count Ratio (50-100 keV) / (15-25 keV) = 1.84729

Mask shadow pattern

IMX = -8.924167356901987E-02, IMY = 4.181789610806486E-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:
-239.320000 -2.852000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.2017  35.3052    0.0   1.0   31.9  -0.3157  -1.5   12.7	Her X-1                       
268.4860  -1.5350    6.4  38.2 -147.8  -0.7101  -1.8    8.6	SW J1753.5-0127               
274.0606 -14.1716    3.5  51.9 -149.2   2.3044   3.2    8.7	GX 17+2                       
288.7495  10.8398    3.5  38.9  173.8   1.1989   3.3    7.0	GRS 1915+105                  
299.7119  35.3242  421.0  36.6  130.2   0.0132   0.0    9.5	Cyg X-1                       
190.7714  74.7238    3.5  50.2   37.0   3.6220   3.3 ------	UNKNOWN                       
205.9054  67.5932    2.5  43.2   30.1   2.0184   4.7 ------	UNKNOWN                       
212.5707  48.9587    3.7  34.1    3.2   0.9327   3.1 ------	UNKNOWN                       
190.9738  40.6369    2.7  49.8   -8.0   2.1294   4.4 ------	UNKNOWN                       
269.0613  -9.4801    2.7  45.9 -145.0   2.3237   4.3 ------	UNKNOWN                       
248.5651  -9.1463    2.5  43.9 -116.4   4.9443   4.6 ------	UNKNOWN

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

Time interval of the image:
-2.852000 72.108000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.5028  35.1336    0.0   0.8   43.6  -0.3172  -1.6   12.7	Her X-1                       
268.5215  -1.4996    5.2  38.1 -147.9   0.6882   2.2    9.6	SW J1753.5-0127               
273.9312 -14.1245   13.1  51.8 -149.1   0.6573   0.9    6.8	GX 17+2                       
288.9831  10.9088    0.0  39.1  173.5   0.5927   1.9   11.1	GRS 1915+105                  
299.3838  35.2476    0.0  36.4  130.4   0.3553   1.0   10.5	Cyg X-1                       
181.4756  69.6661    3.2  52.3   30.0   3.4615   3.6 ------	UNKNOWN                       
301.6733  -0.2653    3.1  55.9  172.9   4.1085   3.8 ------	UNKNOWN                       
245.6109  12.7341    0.2  23.2 -102.0  16.6179  61.0 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
728.880590 962.768800
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.5898  35.2136    3.0  41.9 -125.2   2.2244   3.8    0.7	Cyg X-1                       
308.0413  41.0535    2.5  33.0 -125.0   1.7230   4.7    6.8	Cyg X-3                       
325.9764  38.2320 1216.0  24.6 -148.8  -0.0022  -0.0   10.7	Cyg X-2                       
 27.9985  32.9899    2.9  31.5   84.7   1.5813   3.9 ------	UNKNOWN                       
357.0481  10.1896    2.5  43.3  143.9   3.0203   4.6 ------	UNKNOWN                       
355.4884  36.3656    2.7  17.1  144.5   1.0456   4.3 ------	UNKNOWN                       
135.5374  78.4415    2.9  46.1  -22.1   1.7286   3.9 ------	UNKNOWN                       
237.7981  72.2336    2.6  46.9  -54.1   4.4180   4.5 ------	UNKNOWN

Plot creation:
Sat Jul 30 07:26:00 EDT 2022