List of workflow tasks

This is the list of all the tasks and associated recipes in the SPHERE-ZIMPOL workflow. Only some of them are needed for scientific reduction, they are indicated by the flag “yes” (triggered by default) or “optional” (triggered only if requested by a workflow parameter). Other tasks are not used for scientific reduction (they are indicated by the flag “no”), they are mainly used for instrument monitoring and they can be executed only by specifying them as target. Note that, when a task is specified as target, all the tasks that generate the calibrations needed for it are automatically executed.

TASK	RECIPE	Used in science reduction	Notes
zimpol_bias_imaging	sph_zpl_master_bias_imaging	no	Creates the imaging master bias for both cameras; mainly used for detector monitoring and standard-star reductions.
zimpol_dark_imaging	sph_zpl_master_dark_imaging	yes	Produces the imaging master dark calibration for both cameras.
zimpol_flat_imaging_cam1	sph_zpl_intensity_flat_imaging	optional	Generates the imaging intensity flat-field calibration for camera 1.
zimpol_flat_imaging_cam2	sph_zpl_intensity_flat_imaging	optional	Generates the imaging intensity flat-field calibration for camera 2.
zimpol_standard_astrometry_imaging	sph_zpl_science_imaging	optional	Reduces astrometric standard-field observations for calibration monitoring.
zimpol_standard_flux_imaging	sph_zpl_science_imaging	no	Reduces photometric standard-star observations for zeropoint monitoring.
zimpol_coronagraph_center_imaging	sph_zpl_star_center_img	yes	Determines the stellar position behind the coronagraph for centering and rotation-center definition.
zimpol_science_flux_imaging	sph_zpl_science_imaging	optional	Reduces off-axis flux frames associated with imaging science observations.
zimpol_science_imaging	sph_zpl_science_imaging	yes	Main ZIMPOL imaging science reduction task.
zimpol_bias_polarimetry	sph_zpl_master_bias	no	Creates the polarimetric master bias for both cameras. Used mainly for FastPolarimetry monitoring.
zimpol_dark_polarimetry	sph_zpl_master_dark	optional	Produces the polarimetric master dark for both cameras.
zimpol_flat_polarimetry_qc	sph_zpl_intensity_flat	no	Produces polarimetric intensity-flat products for QC and monitoring only.
zimpol_flat_polarimetry_cam1	sph_zpl_intensity_flat	optional	Generates the polarimetric intensity flat for camera 1.
zimpol_flat_polarimetry_cam2	sph_zpl_intensity_flat	optional	Generates the polarimetric intensity flat for camera 2.
zimpol_modem_efficiency_qc	sph_zpl_modem_efficiency	no	Computes modulation/demodulation efficiency products for QC and monitoring only.
zimpol_modem_efficiency_cam1	sph_zpl_modem_efficiency	optional	Generates the modulation/demodulation efficiency calibration for camera 1.
zimpol_modem_efficiency_cam2	sph_zpl_modem_efficiency	optional	Generates the modulation/demodulation efficiency calibration for camera 2.
zimpol_standard_polarimetry_unpolarized	sph_zpl_science_p1	no	Reduces unpolarized standard stars to monitor instrumental polarization.
zimpol_standard_polarimetry_polarized	sph_zpl_science_p1	no	Reduces highly polarized standard stars to monitor polarization angle and polarization-level offsets.
zimpol_coronagraph_center_polarimetry	sph_zpl_star_center_pol	yes	Determines the stellar position behind the coronagraph for polarimetric observations.
zimpol_science_flux_p1	sph_zpl_science_p1	optional	Reduces off-axis flux frames for polarimetric science observations taken in mode P1.
zimpol_science_p1	sph_zpl_science_p1	yes	Main polarimetric science reduction for observations taken in mode P1.
zimpol_science_flux_p2	sph_zpl_science_p23	optional	Reduces off-axis flux frames for polarimetric science observations taken in mode P2.
zimpol_science_p2	sph_zpl_science_p23	yes	Main polarimetric science reduction for observations taken in mode P2.

Notes

• In polarimetry, the bias is associated only in FastPolarimetry, while the dark is associated only for SlowPolarimetry exposures with EXPTIME > 30 s.

• Modulation–demodulation efficiency calibrations are matched differently depending on whether they are used for calibration, flux/center, or science observations.