Difference: HipeKnownIssues (192 vs. 193)

Revision 1932016-10-18 - AlvarGarcia

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Known issues in HIPE 14

scanamorphosNoiseSpectrum task outputs can have subtle differences between runs due to using a different random seed each time

Changed:
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Ticket number: HCSS-21420 (Won't fix)
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Ticket number: PACS-6858
 
Changed:
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Versions affected: 14.x, 15.x
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Versions affected: 14.x
 
Changed:
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Description: Maps that are mosaicked using the Scanamorphos method can have subtle differences in the output flux between runs of the mosaicking pipeline.
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Description: Maps reduced using the JScanam method can have subtle (always below the noise level) differences in the output flux between runs.
 
Changed:
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Root cause: While initialising a (pseudo) random number generator in task =scanamorphosIndividualDrifts, the seed is left up to the system, so the distribution of the values is different between runs and this affects the final result.
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Root cause: While initialising a (pseudo) random number generator in task scanamorphosNoiseSpectrum, used internally in scanamorphosIndividualDrifts, the seed is left up to the system, so the distribution of the values is different between runs and this affects the final result.
  Workaround: None at the time, because this behaviour is not controlled by any user property or parameter.
 
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