NEAR Data - Volume Naming Scheme

NEAR data reside on a mixture of CDs and DVDs. The names of each CD or DVD volume follow the scheme, Nipppp_dnnn, where:

• N   identifies the NEAR mission.
  

• i   identifies the instrument:

  G = SPICE (Spacecraft, Planet, Instrument, C-matrix, Events) Geometry Data for Eros Orbit
  L = Laser Range Finder (NLR)
  M = Magnetometer (MAG)
  N = Near-Infrared Spectrometer (NIS)
  R = Radio Science (RS)
  X = X-Ray and Gamma-Ray Spectrometer (XRS,GRS)
  I = Multispectral Imager (MSI)
  S = Summary; This code is used when CDs from more than one instrument collected on one DVD

• pppp   identifies the phase:

  CRU1 = Cruise 1
  ERTH = Earth Swing-By
  CRU2 = Cruise 2
  MATH = Mathilde Encounter
  CRU3 = Cruise 3
  ERFB = Eros Flyby
  CRU4 = Cruise 4
  EROS = Eros Orbital
  ERSF = Eros on Surface
  COLL = Multiple Phases; This code is used when CDs for several different phases, such as ERTH and CRU2, are collected on one DVD
  CRUZ = Multiple Cruise Phases; This code is used when CDs for several cruise phases, such as CRU1 and CRU2, are collected on one DVD

• d   identifies the series (CD, DVD, or reduced data):

  0 = uncalibrated data (level 1B) on CD
  1 = uncalibrated data (level 1B) on DVD
  2 = calibrated data (level 2) on CD
  3 = calibrated data (level 2) on DVD
  4 = higher-level (3+) data on CD
  5 = higher-level (3+) data on DVD
  

  Description of data levels:

  Level 1B:   that have been sorted by instrument data types and instrument modes. Data are in scientifically useful forms, such as FITS images or individual spectra. These data are not calibrated.

  Level 2:   Data with calibration and corrections applied to yield data in scientific units.

  Level 3:   Higher-level data products developed for specific scientific investigations.

• nnn   is the sequential number of the physical volume in that series. Documentation resides on volumes numbered '001'.

Series	Volume Name
level 1B, CDs	NIEROS_0001 to NIEROS_0101
level 1B, DVDs	NIEROS_1001 to NIEROS_1017
level 2 (calibrated), CDs	NIEROS_2001 to NIEROS_2330
level 2 (calibrated), DVDs	NIEROS_3001 to NIEROS_3055
higher level (3+), CDs	NIEROS_4001 to NIEROS_4bbb
higher level (3+), DVDs	NIEROS_5001 to NIEROS_5bbb

Another example is the DVD named NSEROS_1001. This DVD is a summary disk that contains level 1B (uncalibrated) data for a several instruments: NLR, MAG, and NIS.