SOI-MDI Stanford DSDS Browsers

Introduction and Overview

The Stanford Science Support Center (SSSC) is responsible for receiving, ingesting, processing, cataloging, archiving and distributing the MDI and spacecraft data from the SOHO spacecraft. The raw telemetry stream data as received on the ground is distributed by Goddard Space Flight Center on CD Roms. These data are ingested into the DSDS storage area and are processed via the pipeline programs to different stages identified as level-0, level-1, level-1.5 and level-2. Data are cataloged in the Oracle database at each stage of the processing with one entry per dataset. In addition to dataset information, the catalog database consists of tables to hold dataseries information, epoch information and other details pertaining to the DSDS system and Pipeline processes. Further FITS Keywords Dictionary is also stored in the database. A detailed description of the MDI Data Flow and Processing can be found in MDI-Data Flow Document.

Datasets Catalog

Description : The Data Naming Convention involves two important terms, DataSets and DataSeries . It is important to note the difference between these two. In general, a DataSet refers to all of the images of a certain type for a given block (usually the block is the block of time) and a DataSeries refers to all of the DataSets for the whole mission. Each DataSet is described by a unique combination of prog, level, series, series #, level #, prog #. Each DataSeries is described by prog, level, series. For more detailed explanation for the SSSC Naming Conventions refer to the MDI-Data Flow Document.
The Datasets Catalog consists of a number of tables in the Oracle Database. The two main tables of interest are the DS_Naming table which holds information about DataSeries and DSDS_Main which holds information about DataSets. In the following the DataSet query form can be used to query the Catalog for any prog, level, series, prog #, level #, series # and it shows additional information about the size of the DataSet in Bytes and T_First and T_Last. The DataSeries query form can be used to query the Catalog for any prog, level, series and in addition it shows Block (type of block), Ser_Type and Descriptions.
DataSets Full Information from Selected Progs & Levels
DataSets Full Information from Selected Progs & Levels w/Datasetnames
DataSets with Maximum Level Number from Selected Progs & Levels
DataSeries Query Form
DataSets Full Information Query Page Without Drop_Down Menus
Slow DataSets Full Information Query Page With Drop_Down Menus
Slow DataSets with Maximum Level Number General Query Page.

Dpc Table

Description : DPC (Data Product Code) is a 4 byte parameter that defines the type of data produced by the MDI instrument. The rules for forming and decoding DPC's can be found in Tech Note SOI-TN-96-133.
DPC Query Form to query the DPC table.
dpdc - a data product decoder made by Rick Bogart to decode any DPC's according to the Rock Bush rules for DPC construction.

Keywords Catalog

Description : FITS Keywords Dictionary is stored in the database table. The table consists of a list of keywords to be used by the SOI project, their type, format, units, category they belong to, defined by, source, short description and full definition. The following reports and forms are used to query the Keywords table in general and if there is a need to add new keywords then Oracle forms screens should be used to enter them into the database.
Keyword Query Form to query the Keyword table.
Level-2 Keywords(Obsolete and exists for historical reasons).

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Page last revised Thursday, 10-Mar-2005 11:02:07 PST