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XMM-Newton Science Analysis System


oal (oal-3.115) [xmmsas_20060628_1801-7.0.0]

Meta Index / Home Page / User-visible functionality / Environment variables

SAS_TIMECORR_TCX

The Reconstructed Time Correlation data provided in an ODF covers the entire revolution in which the observation was performed. If the TCX file is finally used through selection process described above the environment variable SAS_TIMECORR_TCX controls whether the entire dataset is used, or just the data corresponding the observation period. Using the entire data set may improve the fit under certain circumstances.

value of SAS_TIMECORR_TCX	meaning
OBS	Use just the observation period for constructing the data fit
ALL	Use the entire revolution when constructing the fit

If the variable is not set the default behavior is identical to the setting SAS_TIMECORR_TCX=OBS. This variable is ignored for TCS data, which covers just the observation period.