batgrbproduct analysis for trigger=1262165

batgrbproduct Analysis for Trigger=1262165

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): Wed Dec 18 16:34:51 EST 2024
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1262165
======================================================================

  Trigger: 01262165      Segment: 000

  BAT Trigger Time: 751513044.992   [s; MET]
      Trigger Stop: 751513047.04   [s; MET]
               UTC: 2024-10-25T01:36:50.578960    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 333.329884396242   Dec: 83.5663113072757  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.01
     Image Trigger?:     NO
     Rate S/N Ratio:     13.2664991614216  [ if not an image trigger ]
     Image S/N Ratio:    9.01

  Flight Position:   [ source = BAT ]
    RA: 333.329884396242   Dec: 83.5663113072757  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 333.705613534445   Dec: 83.5773842353946  [deg; J2000]  
        { 22h 14m 49.3s , +83d 34' 38.6" }
         +/- 0.811264955880741 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.245178822170756 [arcmin] (formal 1-sigma fit error)
    SNR: 41.0096372964289
 
  Angular difference between Flight and Ground position is 2.609907 arcmin
 
  Partial Coding Fraction: 0.46875    [ including projection effects ]

  Duration
     T90: 130.088000059128 +/- 4.96977425860298
        Measured from: -20.932000041008
                   to: 109.15600001812     [s; relative to TRIGTIME]
     T50: 70.1799999475479 +/- 4.39161389354715
        Measured from: -1.86000001430511
                   to: 68.3199999332428     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 22.1640000343323     
                   to: 23.1640000343323     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -28.4279999732971     
                   to: 132.907999992371     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.074510   3.252213   2.976737   0.818898
           0.090362   0.094345   0.081882   0.064414 [error]
 Peak      0.046726   0.076973   0.079894   0.019370
           0.009100   0.010057   0.009113   0.006427 [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 7.15e-07 1.42e-06 2.21e-06 7.55e-06 6.18e-06 1.19e-05   erg/cm2
              Error 4.59e-08 5.41e-08 8.16e-08 6.35e-07 2.05e-07 6.76e-07   erg/cm2
Peak flux Power-law 5.15e-01 6.05e-01 5.12e-01 7.34e-01 1.89e+00 2.37e+00   ph/cm2/s
              Error 1.24e-01 9.09e-02 6.96e-02 2.05e-01 2.49e-01 2.98e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.50e-07 1.45e-06 2.29e-06 4.81e-06 6.06e-06 9.19e-06   erg/cm2
              Error 5.87e-08 5.89e-08 9.67e-08 1.33e-06 2.20e-07 1.33e-06   erg/cm2
Peak flux Cutoff-PL 4.68e-01 6.23e-01 5.40e-01 5.01e-01 1.87e+00 2.13e+00   ph/cm2/s
              Error 1.15e-01 1.01e-01 8.85e-02 2.81e-01 2.54e-01 3.96e-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    1.365    0.057    -      -           3.93e-03 1.25e-04   53.980 57
CPL   0.997    0.238     154.0   96.6      5.75e-03 1.40e-03   46.410 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.241    0.205    -      -           1.60e-02 2.00e-03   57.470 57
CPL   0.834    0.716     161.4    0.0      2.47e-02 2.42e-02   56.690 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: 126.656000 sec.
T50 in the 50-300 keV band: 30.272000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  161.336  -28.428  132.908
T90   130.088  -20.932  109.156
T50    70.180   -1.860   68.320
Peak    1.000   22.164   23.164

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
  333.7056    83.5774   0.0047    39.3291   -31.5989         5.8252301     41.010 TRIG_01262165                 
 
Foreground time interval of the image:
-28.428  23.509 (delta_t =  51.937 [sec])
Background time interval of the image:
-239.992 -28.428 (delta_t = 211.564 [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 2.048000

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 2.048000

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 2.048000

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  -28.428 sec. to  132.908 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.36508     ( -0.0573832   0.0571837 )
Norm@50keV  : 3.93244E-03    ( -0.00012515   0.000125125 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   53.98     using 59 bins.
 Reduced chi-squared = 0.947018
# Null hypothesis probability of 5.89e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 161.3 sec: 0.475246 ( -0.016571  0.016618 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.17524e-06 ( -2.05378e-07  2.05548e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -28.428 sec. to  132.908 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.996533     ( -0.244649   0.231829 )
Epeak [keV] : 153.989      ( -39.5389 153.616 )
Norm@50keV  : 5.75368E-03    ( -0.00119612   0.00159829 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   46.41     using 59 bins.
 Reduced chi-squared = 0.82875
# Null hypothesis probability of 8.16e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 161.3 sec: 0.464475 ( -0.017755  0.01783 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.05793e-06 ( -2.20058e-07  2.19249e-07 ) ergs/cm2

Band function

Time interval is from  -28.428 sec. to  132.908 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]    : 18.5080  (  )
R^2/D10^2   : 2.66996E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  212.73     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.19e-20 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.927e-07   1.863e-08
25- 50  1.382e-06   6.000e-08
50-150  3.458e-06   1.863e-07
15-150  5.133e-06   1.815e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-5.58704      -200)
Norm        : 2.00587       (-0.0640327     0.0640327)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   85.85     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.05e-03 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.056e-07   2.879e-08
25- 50  1.550e-06   5.162e-08
50-150  3.399e-06   1.169e-07
15-150  5.754e-06   1.960e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.33046        (-1.00794      1.15308)
R1^2/D10^2  : 0.346500        (-0.130772      0.234372)
kT2 [keV]   : 27.2445        (-2.53283      3.50961)
R2^2/D10^2  : 5.99175E-03    (-0.00213876   0.00260139)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.43     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.87e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.237e-07   8.517e-08
25- 50  1.458e-06   1.219e-07
50-150  3.950e-06   3.202e-07
15-150  6.032e-06   4.218e-07

Peak spectrum fit

Power-law model

Time interval is from   22.164 sec. to   23.164 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.24081     ( -0.20738   0.202513 )
Norm@50keV  : 1.60327E-02    ( -0.00200176   0.00199595 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   57.47     using 59 bins.
 Reduced chi-squared = 1.00825
# Null hypothesis probability of 4.58e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.89345 ( -0.24904  0.24995 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.60864e-07 ( -2.09923e-08  2.10432e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   22.164 sec. to   23.164 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.833911     ( -0.921428   0.510934 )
Epeak [keV] : 161.386      ( -161.406 -161.406 )
Norm@50keV  : 2.47114E-02    ( -0.0104078   0.0380597 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   56.69     using 59 bins.
 Reduced chi-squared = 1.01232
# Null hypothesis probability of 4.49e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 1.87049 ( -0.25344  0.25396 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.58921e-07 ( -2.17507e-08  2.15469e-08 ) ergs/cm2

Band function

Time interval is from   22.164 sec. to   23.164 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]    : 19.4077  (-2.93883  3.60588)
R^2/D10^2   : 9.70698E-02  (-0.0424417   0.072226)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   68.63     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.39e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.131e-09   1.740e-09
25- 50  3.481e-08   8.015e-09
50-150  9.673e-08   2.097e-08
15-150  1.387e-07   2.480e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-36.4964      -200)
Norm        : 8.02514       (-1.01289     1.01289)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   63.77     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.51e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.999e-08   1.114e-08
25- 50  3.845e-08   2.147e-08
50-150  8.433e-08   4.601e-08
15-150  1.428e-07   7.975e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.61238        (-5.00955      5.62219)
R1^2/D10^2  : 0.608597        (-0.423097      5.93899)
kT2 [keV]   : 35.2003        (-13.5853      -35.4016)
R2^2/D10^2  : 1.03649E-02    (-0.00997141   0.0497433)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   57.05     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.99e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.310e-08   7.555e-09
25- 50  3.837e-08   2.071e-08
50-150  1.082e-07   5.755e-08
15-150  1.597e-07   8.120e-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: 1.08393     ( -0.065494   0.0646652 )
Norm@50keV  : 7.39398E-03    ( -0.000282782   0.000281785 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   50.92     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.01e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 51.94 sec: 0.856369 ( -0.0345383  0.0346399 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.03609e-06 ( -1.50644e-07  1.50785e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.686050     ( -0.285013   0.266981 )
Epeak [keV] : 202.502      ( -58.957 263.226 )
Norm@50keV  : 1.08091E-02    ( -0.00237735   0.00323855 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   44.27     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.71e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 51.94 sec: 0.838763 ( -0.03626  0.036436 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.99075e-06 ( -1.55898e-07  1.55212e-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)  = 1.42e-06
S(50-100 keV) = 2.21e-06

T90 vs. Hardness ratio plot

T90                                   = 130.088000059128 sec.
Hardness ratio (energy fluence ratio) = 1.55634

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.5677
Count Ratio (50-100 keV) / (15-25 keV) = 1.43491

Mask shadow pattern

IMX = 6.978609709133737E-01, IMY = 4.293089372563206E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

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:
-239.992000 -28.428000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.6046  35.1847    0.6  33.2 -121.4   7.2168  18.9    1.2	Cyg X-1                       
308.0945  40.9482    2.8  24.8 -116.2   1.2018   4.1    0.8	Cyg X-3                       
326.2281  38.2897    4.5  13.1 -142.3   0.6450   2.6    3.3	Cyg X-2                       
297.1034  38.1839    2.5  33.7 -114.9   1.9266   4.6 ------	UNKNOWN

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

Time interval of the image:
-28.428000 23.508600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.5948  35.3348   22.4  33.2 -121.1   0.0746   0.5    8.0	Cyg X-1                       
308.2211  41.0595    5.2  24.7 -116.0  -0.2498  -2.2    8.1	Cyg X-3                       
326.3926  38.3702    8.0  12.9 -142.3   0.1240   1.5   10.8	Cyg X-2                       
317.2065  -7.9406    2.9  56.8  179.2   2.0679   3.9 ------	UNKNOWN                       
 71.1316  80.6249    2.6  46.3  -17.2   0.7515   4.4 ------	UNKNOWN                       
333.7056  83.5774    0.3  39.3  -31.6   5.8250  41.0 ------	UNKNOWN                       
300.3467  33.1929    2.2  33.7 -125.1   0.7372   5.2 ------	UNKNOWN                       
284.1933  40.7653    2.8  41.6 -104.2   1.6573   4.1 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
103.308600 962.081100
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.5550  35.1983    1.5  49.6 -175.2  19.0638   7.8    1.7	Cyg X-1                       
308.2393  41.0638    4.6  43.2  176.0   4.3275   2.5    8.9	Cyg X-3                       
326.3158  38.2859    7.5  45.3  155.9   4.4412   1.5    7.1	Cyg X-2                       
 91.8100  49.3245    3.5  44.0   23.7   4.5449   3.3 ------	UNKNOWN                       
303.3406  32.8347    2.5  51.7 -179.5  12.7485   4.7 ------	UNKNOWN                       
256.2283  40.7697    3.5  48.1 -129.2  17.5390   3.3 ------	UNKNOWN

Plot creation:
Wed Dec 18 17:44:07 EST 2024