batgrbproduct analysis for trigger=1197027

batgrbproduct Analysis for Trigger=1197027

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): Tue Dec 26 15:37:22 EST 2023
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1197027
======================================================================

  Trigger: 01197027      Segment: 000

  BAT Trigger Time: 721883032.064   [s; MET]
      Trigger Stop: 721883032.192   [s; MET]
               UTC: 2023-11-17T03:03:19.680140    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 332.409522560922   Dec: 13.5136059442377  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    24.19
     Image Trigger?:     NO
     Rate S/N Ratio:     255.998046867549  [ if not an image trigger ]
     Image S/N Ratio:    24.19

  Flight Position:   [ source = BAT ]
    RA: 332.409522560922   Dec: 13.5136059442377  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 332.404189217709   Dec: 13.5172795169078  [deg; J2000]  
        { 22h 09m 37.0s , +13d 31' 02.2" }
         +/- 0.603261094350448 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.186191084959103 [arcmin] (formal 1-sigma fit error)
    SNR: 62.6155517748003
 
  Angular difference between Flight and Ground position is 0.381300 arcmin
 
  Partial Coding Fraction: 0.8359375    [ including projection effects ]

  Duration
     T90: 0.667999863624573 +/- 0.0729931905000922
        Measured from: -0.0199999809265137
                   to: 0.647999882698059     [s; relative to TRIGTIME]
     T50: 0.199999928474426 +/- 0.00894431669225064
        Measured from: 0.0479999780654907
                   to: 0.247999906539917     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.0479999780654907     
                   to: 0.952000021934509     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.455999970436096     
                   to: 1.30400002002716     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.962306   1.343971   1.036657   0.290423
           0.020515   0.023899   0.022056   0.014677 [error]
 Peak      0.878971   1.279303   1.000736   0.285306
           0.018761   0.022530   0.021103   0.013808 [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 3.20e-07 5.70e-07 7.80e-07 2.20e-06 2.25e-06 3.87e-06   erg/cm2
              Error 1.49e-08 1.55e-08 2.25e-08 1.44e-07 5.52e-08 1.56e-07   erg/cm2
Peak flux Power-law 9.49e+00 9.50e+00 6.67e+00 7.42e+00 2.86e+01 3.31e+01   ph/cm2/s
              Error 4.45e-01 2.65e-01 1.82e-01 4.36e-01 7.40e-01 7.71e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.03e-07 5.79e-07 7.97e-07 1.65e-06 2.22e-06 3.33e-06   erg/cm2
              Error 1.95e-08 1.67e-08 2.59e-08 3.64e-07 5.97e-08 3.65e-07   erg/cm2
Peak flux Cutoff-PL 8.90e+00 9.61e+00 6.85e+00 5.85e+00 2.81e+01 3.12e+01   ph/cm2/s
              Error 5.90e-01 2.79e-01 2.21e-01 9.78e-01 8.07e-01 1.35e+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    1.550    0.044    -      -           1.36e-01 3.19e-03   62.420 57
CPL   1.323    0.179     165.7  187.9      1.73e-01 3.18e-02   57.490 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.510    0.043    -      -           2.28e-01 5.32e-03   60.720 57
CPL   1.261    0.178     165.5  141.2      2.96e-01 5.43e-02   54.740 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: 0.512000 sec.
T50 in the 50-300 keV band: 0.128000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    1.760   -0.456    1.304
T90     0.668   -0.020    0.648
T50     0.200    0.048    0.248
Peak    1.000   -0.048    0.952

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
  332.4042    13.5173   0.0031    28.7908  -178.2153         3.6243840     62.616 TRIG_01197027                 
 
Foreground time interval of the image:
 -0.456   1.304 (delta_t =   1.760 [sec])
Background time interval of the image:
-239.064  -0.456 (delta_t = 238.608 [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   -0.456 sec. to    1.304 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.55019     ( -0.0435536   0.0436437 )
Norm@50keV  : 0.136010    ( -0.00319437   0.00319427 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   62.42     using 59 bins.
 Reduced chi-squared = 1.09509
# Null hypothesis probability of 2.90e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1.76 sec: 17.2195 ( -0.4519  0.4532 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.25379e-06 ( -5.52036e-08  5.52077e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.456 sec. to    1.304 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.32260     ( -0.182393   0.175458 )
Epeak [keV] : 165.656      ( -49.5329 326.339 )
Norm@50keV  : 0.172595    ( -0.0283084   0.0353287 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   57.49     using 59 bins.
 Reduced chi-squared = 1.02661
# Null hypothesis probability of 4.20e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1.76 sec: 16.9353 ( -0.4962  0.4985 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.22471e-06 ( -5.98361e-08  5.96397e-08 ) ergs/cm2

Band function

Time interval is from   -0.456 sec. to    1.304 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]    : 16.4727  (  )
R^2/D10^2   : 1.35461  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  427.61     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.33e-58 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.328e-07   6.345e-09
25- 50  5.729e-07   1.778e-08
50-150  1.098e-06   5.051e-08
15-150  1.804e-06   4.778e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-11.0312      -200)
Norm        : 70.0027       (-1.64285     1.64285)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.74     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.43e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.069e-07   8.272e-09
25- 50  5.903e-07   1.549e-08
50-150  1.295e-06   3.467e-08
15-150  2.192e-06   5.720e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.88226        (-0.786495      0.84075)
R1^2/D10^2  : 11.5409        (-3.19212      4.90358)
kT2 [keV]   : 28.6030        (-2.72254      3.71289)
R2^2/D10^2  : 0.151023    (-0.0542051   0.0690974)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   74.95     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.81e-02 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.607e-07   2.130e-08
25- 50  5.965e-07   2.825e-08
50-150  1.341e-06   8.853e-08
15-150  2.198e-06   1.162e-07

Peak spectrum fit

Power-law model

Time interval is from   -0.048 sec. to    0.952 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.51040     ( -0.0427523   0.0428411 )
Norm@50keV  : 0.228392    ( -0.00531923   0.00531914 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.72     using 59 bins.
 Reduced chi-squared = 1.06526
# Null hypothesis probability of 3.43e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 28.5936 ( -0.7389  0.7407 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.16327e-06 ( -5.26988e-08  5.27823e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.048 sec. to    0.952 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.26110     ( -0.181484   0.174696 )
Epeak [keV] : 165.533      ( -46.7874 235.61 )
Norm@50keV  : 0.296386    ( -0.0483893   0.0602865 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   54.74     using 59 bins.
 Reduced chi-squared = 0.9775
# Null hypothesis probability of 5.23e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 28.1039 ( -0.805  0.8083 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.13413e-06 ( -5.68741e-08  5.67067e-08 ) ergs/cm2

Band function

Time interval is from   -0.048 sec. to    0.952 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]    : 16.7326  (  )
R^2/D10^2   : 2.16819  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  417.52     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.68e-56 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.242e-07   6.050e-09
25- 50  5.424e-07   1.820e-08
50-150  1.079e-06   4.300e-08
15-150  1.745e-06   4.650e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-7.15936      -200)
Norm        : 117.395       (-2.7347     2.7347)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   64.47     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.32e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.924e-07   7.450e-09
25- 50  5.625e-07   1.540e-08
50-150  1.234e-06   3.050e-08
15-150  2.088e-06   5.400e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.42644        (-0.845113      0.902912)
R1^2/D10^2  : 15.2386        (-4.02615      6.10376)
kT2 [keV]   : 30.5061        (-3.29474      4.73268)
R2^2/D10^2  : 0.203405    (-0.0807245   0.106648)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   71.27     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.91e-02 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.321e-07   1.990e-08
25- 50  5.697e-07   2.530e-08
50-150  1.309e-06   9.850e-08
15-150  2.111e-06   1.155e-07

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: 1.55019     ( -0.0435536   0.0436437 )
Norm@50keV  : 0.136010    ( -0.00319437   0.00319427 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   62.42     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.90e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1.76 sec: 17.2190 ( -0.451852  0.453131 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.25347e-06 ( -5.5182e-08  5.52286e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.32260     ( -0.182394   0.175457 )
Epeak [keV] : 165.657      ( -49.5335 326.338 )
Norm@50keV  : 0.172595    ( -0.0283082   0.0353289 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   57.49     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 4.20e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1.76 sec: 16.9330 ( -0.4959  0.4983 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.22556e-06 ( 0  0 ) 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)  = 5.70e-07
S(50-100 keV) = 7.80e-07

T90 vs. Hardness ratio plot

T90                                   = 0.667999863624573 sec.
Hardness ratio (energy fluence ratio) = 1.36842

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.39662
Count Ratio (50-100 keV) / (15-25 keV) = 1.07726

Mask shadow pattern

IMX = -5.492785693867425E-01, IMY = 1.711529166567113E-02

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:
-239.064000 -0.456000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.6106  35.2031    0.8  25.0  -90.6   7.2020  14.5    1.0	Cyg X-1                       
307.9756  40.8142    7.6  17.0  -81.9   0.7471   1.5   10.3	Cyg X-3                       
326.1968  38.3059    4.6   5.2 -132.7   1.1141   2.5    1.5	Cyg X-2                       
359.3416   1.9813    2.8  47.8  145.0   5.5399   4.1  125.3	UNKNOWN                       
324.0712  40.6307    2.3   5.2 -100.9   2.1026   5.1 ------	UNKNOWN                       
308.1417  39.4463    3.0  17.2  -86.5   1.7480   3.8 ------	UNKNOWN

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

Time interval of the image:
-0.456000 1.304000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.7522  35.2729   14.7  24.9  -90.6   0.0505   0.8    9.0	Cyg X-1                       
308.0232  41.0813    7.1  16.9  -81.0   0.0886   1.6    8.7	Cyg X-3                       
326.1788  38.1782    6.4   5.3 -133.5  -0.0880  -1.8    8.6	Cyg X-2                       
332.4042  13.5173    0.2  28.8 -178.2   3.6244  62.6 ------	UNKNOWN                       
327.2174  29.2285    2.4  13.3 -161.6   0.2318   4.8 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
84.836630 717.679700
720.936000 962.976000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.6229  35.2075    0.7  36.6  -31.2  34.6895  16.4    1.6	Cyg X-1                       
308.3368  40.8826    0.0  34.5  -16.3   0.7504   0.4   11.1	Cyg X-3                       
326.2699  38.5064    0.0  25.6    5.5  -0.3406  -0.2   12.0	Cyg X-2                       
317.0781  60.4666    2.9  48.3    6.6   9.7613   3.9 ------	UNKNOWN                       
327.7328  11.0793    2.4   5.2 -100.9   7.2299   4.9 ------	UNKNOWN                       
315.5018   9.0429    4.0  17.2  -86.7   4.4153   2.9 ------	UNKNOWN                       
303.0190  33.0693    2.7  33.1  -32.2   8.2673   4.3 ------	UNKNOWN

Plot creation:
Tue Dec 26 17:01:10 EST 2023