Supporting documentation:

02C.07.01.03 Pipeline Control and Infrastructure
  • Determine data to process
    • per sky tract?
  • Submit jobs to orchestration system
    • All visits can be generated in parallel
    • Then visits can be warped to tract WCS in parallel (some visits in multiple tracts)

02C.04.03 PSF Estimation Pipeline

 

PSF varies spatially and with source brightness.
  • Decompose PSF into atmospheric and telescope/camera components.
  • Estimate telescope/camera component using wavefront sensor and metrology.
  • Estimate atmospheric component by using bright, isolated stars.

 

02C.04.04 Image Coaddition Pipeline

 

  • Basic snap/visit processing (02C.03.01):
    • Instrument signature removal
    • Cosmic ray rejection
    • Basic PSF determination
    • Source extraction and basic WCS calibration
  • Apply results of relative astrometric solution from Single Frame Pipeline
  • Warp images to common coordinate system
  • Co-add images, optionally with “background matching"

  

02C.04.05 Object Detection and Deblending
  • Detect sources on co-adds
  • De-blend

 

02C.04.06 Object Characterization Pipeline
  • Associate CoaddSources with Level 1 catalog and single frame catalog
  • Source characterization:
    • Single-epoch characterization
    • Multifit
    • Point source model fit
    • Bulge-disk model fit
    • Trailed model fit
    • Dipole model fit
    • Centroids
    • Adaptive moments
    • Petrosian and Kron fluxes
    • Aperture surface brightness
    • Resolved/unresolved object separation
    • Variability Characterization
  • Forced photometry

  

02C.06.01.01 Catalogs, Alerts and Metadata
Databases used:
  • Read:
    • Level 1 Catalog
    • External Catalogs
  • Read/Write:
    • Catalogs from single frame processing
  • Write (during DRP / Read by SUI):
    • Object catalog
    • Forced Sources catalog

 

02C.05.02 Data Analysis and Visualization Tools 
  • Display and plot catalog from single visit
  • Display cutout of deep coadd and associated catalog overlay.
  • Display time-series for a selected source
  • View alert history for selected source including annotations.
  • Send complex query to object catalog and display results
  • Obtain provenance information for an Object (visits included, data release number, software versions used, associated alerts)
  • Create DOI for query
Relevant Key Performance Metrics
DLP-290 - Getting issue details... STATUS
DLP-308 - Getting issue details... STATUS
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DLP-333 - Getting issue details... STATUS
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