File naming for MSL MMM EDRs and single frame RDRs
mission specific
EDRs and single frame image RDRs generated by OPGS share the common file naming convention described on this page. File names take the pattern consisting of fixed-size fields:
| Field | sol | inst | prodid | CDPID cntr | CDPID | type | GOP cntr | ver | _ | proc | . | ext |
| Position | 1-4 | 5-6 | 7-15 | 16-17 | 18-22 | 23 | 24 | 25 | 26 | 27-30 | 31 | 32-34 |
Details of the file name fields are given below.
sol - Sol
Positions 1-4, 4 numeric characters representing the MSL sol on Mars, or 4 alpha characters representing ground testing phase.
| value | Meaning |
|---|---|
| 0000-9999 | MSL sol on Mars |
| ATL_ | ATLO (JPL and KSC venues) |
| CAL_ | Calibration (instrument stand-alone) |
| CRU_ | Cruise |
| DEL_ | Delivery (instrument delivery to JPL-Caltech) |
| DEV_ | Development (instrument assembly) |
| TVC_ | Thermal/Vac (instrument stand-alone) |
inst - Instrument
Positions 5-6, 2 alpha characters representing instrument ID, denoting the source MSL science or engineering instrument that acquired the data.
| inst | Meaning |
|---|---|
| MD | MARDI |
| MH | MAHLI |
| ML | Mastcam Left |
| MR | Mastcam Right |
prodid - Product ID
Positions 7-15, 9 characters as a product type identifier. The first 6 digits are the Sequence ID, and the remaining 3 digits are the Sequence line, or Command number.
CDPID cntr - Camera data product identifier counter
Positions 16-17, 2 numeric digits representing a counter for the number of times a CDPID for this instrument has been used (product erasures in NVM will re-use a CDPID). This is a single natural number starting at 1.
CDPID - Camera data product identifier
Positions 18-22, 5 numeric digits representing a value that is uniquely assigned by the camera to an image product. It is a numeric handle within NVM. Compression variations or thumbnails will share the same CDPID. This is a single natural number starting at 1.
type - Product type
Position 23 - 1 alpha character representing the type of product.
| type | Meaning |
|---|---|
| A | Raster 16 bit image |
| B | Raster 8 bit image |
| C | Losslessly compressed raster 8 bit image |
| D | JPEG grayscale image |
| E | JPEG 422 image |
| F | JPEG 444 image |
| G | Raster 8 bit thumbnail |
| H | JPEG grayscale thumbnail |
| I | JPEG 444 thumbnail |
| J | Raster 8 bit video |
| K | Losslessly compressed raster 8 bit video |
| L | JPEG grayscale video |
| M | JPEG 422 video |
| N | JPEG 444 video |
| O | Raster 8 bit video thumbnail |
| P | JPEG grayscale video thumbnail |
| Q | JPEG 444 video thumbnail |
| R | JPEG 444 focus merge image |
| S | JPEG grayscale range map image |
| T | JPEG 444 focus merge thumbnail |
| U | JPEG grayscale range map thumbnail |
GOP cntr - GOP counter
Position 24, 1 character representing a hexadecimal index of the image within a GOP. The value is 0 for non-GOP products.
ver - Version
Position 25, 1 alphanumeric character used to identify multiple versions of a product. Versions may be different compressions or duplicates for the same camera product. Versions start at 0 (indicating original image as stored on-board within each camera). For each image received, increment by 1. Versions are unique for each CDPID Counter and CDPID.
| ver | Meaning |
|---|---|
| 0, 1, ... 9 | 0-9 |
| A, B, ... Z | 10-35 |
proc - Processing code
Positions 27-30, 4 alpha characters representing processing code. Codes indicate ground processing performed on the camera product. No processing (EDR) is indicated by all fill characters (XXXX). As many as four codes may be indicated for a given product.
| proc | Meaning |
|---|---|
| C | Color corrected or contrast stretched |
| D | Decompressed |
| L | Linearized |
| R | Radiometrically calibrated |
| X | Fill character |
ext - Extension
Positions 32-34, 3 alphanumeric characters denoting the file type.
| ext | Meaning |
|---|---|
| DAT | Original camera data product |
| LBL | Label file for .DAT or .IMG files |
| IMG | Binary image data |
see also