Up: IPP at the ROE

IPP Filename Structure

There are two parts to the filenames

• Observation
• Data reduction product
• In the form Observation.DataReductionProduct

Observation

Consider: o4997g0240o.77966

• o = OTIS (Observatory, Telescope, Instrument, and Software). Nothing else possible?
• 4997 = Julian Date - 2,450,000
• g = Gigapixel Camera. Let's us know this is a PS1 observation. Though what will it be for PS4?
• 0240 = Observation sequence number
• o = object, bais, dark, flat, etc.
• 77966 = Exposure ID

Data reduction product

Consider:

• Either:
  • o4997g0240o.77966.ch.41966.XY76.trace
  • o4997g0240o.77966.wrp.16984.skycell.1480.060.trace`
• 'ch' = chip or warp or ...
  • If ch then it's a chip (i.e. detector coordinates)
    • 41966 = chip analysis. Not clear what this means.
    • XY76 => chip in the GPC frame
      • i = 0 to 7, j = 0 to 7, with no 00, 07, 70, or 77)
    • trace
    • psf
    • pplmerge.mdc
    • mdl
    • log
    • cmf
    • ch.wt
    • ch.mk
    • ch
  • If wrp then it's a warm (i.e. mapped to sky coordinates)
    • 169841 = ?
    • skycell = invariant. Just lets you know the next two numbers are skycell references
    • 1480 = Skycell 1480. Doesn't tell you much if you don't know the particular choice of skycell geometry. Just that it's the 1480th cell in the sky.
    • 060 = the 60th subcell in the skycell.
      • trace
      • stats
      • pswarp.mdc
      • log

Skycells