| Description: data_quality_index provides a more precise subjective assessment by the data provider of the quality of the observed/predicted ring occultation. Possible values are:. |
| Namespace Id: rings | Steward: rings | Class Name: Occultation_Ring_Profile | Type: ASCII_Short_String_Collapsed |
| Minimum Value: None | Maximum Value: None | Minimum Characters: 1 | Maximum Characters: 255 |
| Unit of Measure Type: None | Default Unit Id: None | Attribute Concept: None | Conceptual Domain: SHORT_STRING |
| Status: Active | Nillable: false | Pattern: None |
| Permissible Value(s) | Value | Value Meaning |
| | 0 | Not observable - observations at the predicted occultation event time for this ring were either not recorded (for example, the star was below the horizon) or the occultation chord did not intersect the ring. |
| | 1 | High-SNR profile with sharp edges matched by square-well model fit. |
| | 2 | Moderate-SNR profile with well-defined midtime from square-well model fit but possible systematic deviations of observed ring profile from model fit. |
| | 3 | Clear ring detection but less-reliable ring width and or mid-time due to noise or substantial convolution by star diameter and/or instrumental time constant. |
| | 4 | Unreliable detection - some hint of a ring occultation, fitted by square-well model, but ~50% chance it is just noise. |
| | 5 | No detection - Data were recorded at the expected location of a ring occultation, but no ring was observed, either because ring event was obscured by noise or (for the lambda ring) the optical depth of the ring at the observed longitude was below detectability, even if the overall SNR of the data is high. |
| | 6 | Is not an indication of data quality. Indicates the product is a profile of the entire ring system based on the equator system of the planet. |
| | B | Background is from a different occultation. |
| | F | Significant fraction of Sun is outside FOV. |
| | R | Some of the data are flagged for removal. |
| | U | Unocculted solar signal is from a different occultation. |
| | X | Observation is unusable for analysis. |