The QC group processes a stream of
science-grade data products for selected VLT instruments. They are created using certified pipelines and certified master calibrations.
Find an overview of the current streams here.
MUSE science data products, processed as Internal Data Products by
the Quality Control Group at ESO, are available covering the entire
data history. They can be downloaded from the phase3 archive interface.
The MUSE science data types are identified by the DPR TYPE keyword of the FITS headers.
Find information about the general MUSE data format here. The information
The SCIENCE further split into two different observing modes:
Wide Field Mode (WFM) and Narrow Field Mode (NFM, commissioned
in 2018). The WFM observations can be taken with Adaptive
Optics system (AO) or without (NOAO). The NFM data are only
taken with AO.
Processing of MUSE science data is done in few steps, using
different recipes at each step. To obtain final product, all
processing steps have to be applied.
frame
recipe
description
products
SCIENCE, sky
step1: muse_scibasic
bias subtraction, flat-fielding correction, wavelength-calibration, assigns 3D coordinates to each CCD-based pixel, creating a pixel table for each exposure
PIXTABLE_SKY
SCIENCE, sky
step2: muse_create_sky
merging of pixel tables from all IFUs of each exposure, creating night sky model from selected, empty pixels, image reconstruction
SKY_SPECTRUM, SKY_LINES, SKY_CONTINUUM, IMAGE_FOV
SCIENCE, object
step1: muse_scibasic
as above
PIXTABLE_OBJECT
SCIENCE, object
step2: muse_scipost
merging of pixel tables from all IFUs of each exposure, flux calibration, sky subtraction, resampling into a datacube, image reconstruction
DATACUBE_FINAL, IMAGE_FOV, PIXTABLE_REDUCED
SCIENCE, object
step3: muse_exp_align
computing coordinate offset for each input FOV image with respect to a reference
OFFSET_LIST
SCIENCE, object
step4: muse_exp_combine
combining several exposures into one datacube
DATACUBE_FINAL, IMAGE_FOV, PIXTABLE_COMBINED
The MUSE calibration scheme, including SCIENCE data reduction, is
shown here.