Open raw data file

The data obtained at Plateau de Bure are stored in files of extension IPB. The parameters derived from the calibration are stored in files of extension hpb (or header files). A naked version of these files can be created with the option Open raw data file (Figure ) in the CLIC menu (Figure ).

First of all, the location of the raw data (IPB files) must be defined, either by clicking in RAW DATA DIRECTORIES (see Figure ) or within the .gag.dico gildas file. In the IRAM project accounts (see Sect. ) the location of the raw data is already predefined. A raw data file must be selected among the Project_Date choices. OPEN and FIND opens this file and proposes a standard name for the output file. CREATE HEADER FILE creates a hpb file ready to calibrate the data in antenna-based mode. By default Mode (in the widget) is NEW, and so a new hpb file is created each time. By selecting OLD, visibilities can be added to an existing hpb file, which is very convenient if observations were contiguous in time.

Figure: Open raw data file, in the CLIC menu.

In this and the following widgets there are at the top the options GO and ABORT. GO is aimed to run all the options proposed as clickable buttons, from left to right, with no stop. In general, its use is only recommended for the First Look (see Sect. ). ABORT closes the widget and returns to the parent widget.

As mentioned in Sect. , the hpb files resulting from the PdB pipeline calibration are given in the directory reports. We recommend not to use them to create the final uv-tables since, for the time being, they were not created with this purpose and so may include severe flags or artifacts due to a further AoD analysis.