[ ESO ]
NACO Pipeline:
General Information

CAL | HC | refs | QC
QUALITY CONTROL
    HOME
NACO QC
Trending & QC1
Pipeline
general info
Data Management
QC links:
general NACO

PIPELINES AT ESO

This page provides information about pipeline processing and data types.

Raw data are selected, associated and inserted into a reduction mechanism which produces calibration products, science products and quality control information. This mechanism is the data processing pipeline. There is one such pipeline for each VLT and VLTI instrument.

Find general information about ESO reduction pipelines here.

FUNCTIONALITIES

The main functionalities of the pipelines are:

  • create master calibration data,
  • reduce science frames,
  • extract QC information from the data.

QC Garching creates master calibration data from all raw calibration data. The raw data are stored in the ESO Archive and are public. They are quality-checked and used for data reduction and for trending.

Before October 2011 QC Garching processed science data, using the best available, quality-checked master calibration data. As of October 2011 this service is not offered anymore.

OPERATIONS

There are two instances of the data reduction pipelines:

  • at the instrument workstation on Paranal, running in automatic mode,
  • at HQ Garching, run by the Quality Control Group in the optimized mode.

The automatic mode is used for quick look purposes and for on-site quality control. It processes all raw data sequentially, as they arrive from the instrument. If calibration products ("master calibrations") are required for processing science data, these are taken from a database with standard, pre-manufactured calibration products. The automatic mode is not tuned to obtain the best possible results.

The optimized mode is the mode, which uses all data of a night, including the daytime calibrations. The calibration data are sorted and grouped according to their dependencies. Master calibration data are created. Their quality is checked.

top NACO INFORMATION

The NACO pipeline is publicly available.

The NACO pipeline is based on the ESO Common Pipeline Library (CPL). It has been used since January 01, 2006. Before that date older version of NACO pipeline, using Data Reduction Software (DRS) was active. It was written in C, based on the (stand-alone) eclipse library.


 
[ESO][Index][Search][Help][News]