XMM-Newton Science Analysis System


epspatialcti (epspatialcti-1.3.1) [22.0.0-9173c7d25-20250127]

Algorithm

Open the input event file
Read the observing mode from the input event file

if SD20mode is False

  Read from the EPN_CTI CCF coefficients and template values

  Loop over each event

    set coefficients(a,b,c) from the event CCD, RAWX, RAWY values
    set template value from the event CCD, RAWX, RAWY values

    h = log10(event_pi) - 3.0;
    f = a + (b + c * h) * h;

    event_pi = event_pi - template_value * f

  end of loop

else

  Read from the EPN_SPATIALCTI CCF offsets to apply to PI values

  Loop over each event

    set offset from the event epoch, CCD, RAWX, RAWY values

    event_pi = event_pi - offset

  end of loop

Add the keyword SPATCTIC = 'yes' into the EVENTS header