• Lev0.3Doc

Level 0.3 / Level 0.5 Data

Level 0.3 and Level 0.5 data are very similar. The Level 0.3 data is a temporary, best effort set of Level 0.5 data based on what is available at the time of computation.

In theory, after N days the Level 0.3 data will disappear from a given date and a person will only view the Level 0.5 data. The value of N is yet to be determined. It may be as low as 5 days. Essentially, Level 0.3 is intended to be "QuickLook" data, only desired by the user who needs data ASAP (as opposed to a science analyst user).

Sources for the Level 0.3/0.5 data include:

• Level 0.1 data (metadata and images from the instruments)
• Orbit prediction data from the GSFC Flight Dynamics Center
• Attitude data from the spacecraft
• Temperature and Power data from the spacecraft and instruments

Data series that feed Level 0.3/0.5 include:

sdo.*

• sdo.fds
• sdo.fds_orbit_ingesthist
• sdo.fds_orbit_vectors (contains both helio- and geo-centric velocity)
• sdo.fds_orbit_vectors_sbox
• sdo.hk_dayfile (Prime keys – date, apid, source, also keyword source=moc. Contains all dayflies for all SDO APIDs from MOC product server)
• sdo.moc_fds
• sdo.ancillary_science_data

hmi.*

• hmi.lev0
• hmi.hk_dayfile

aia.*

• aia.lev0
• aia.hk_dayfile

Functions intended to feed the Level 0.3/0.5 data series include:

• A drms module, getfdsorbit – input: time (something that is not on the original time grid, so interpolation will be necessary), coord system (also specifies helio or geo/J2000 ecliptic or something else or interpolation parameters); output: position vector and velocity vector. Make the output doubles.
• No need for an intermediate series with interpolated/converted data.
• The master LZP MOC server download script, mocDlLzp.csh (JSOC/proj/lev0/scripts/mocserver), downloads files to /surge, and then calls script to ingest into sdo.hk_dayfile.
• The script/module to ingest into sdo.hk_dayfile
• Needs a sdo.asdp - Contains all the ancillary science data packet information (apid 129).
  1. Need to write an ingest script/module for sdo.asdp.
  2. Input to this script is sdo.hk_dayfile.
• Need a master lev 0.3 record creation module. It calls modules like getfdsorbit.
• sdo_get_pointing: a function to query the pointing data from the ancillary science data packet and return spacecraft pointing data in the co-ordinate system of the user's choice
• sdo_telem_processing: a statistics function performed on housekeeping data. This function will take in a parameter file, an input series and a type of statistical process to be performed, and a destination series. The input parameter file would contain three columns: source keyword, operation to be performed, and destination keyword.
• A parameter file example: