Table 9
AOT_DETECTORS fields.
| Name | Type | Unit | Description |
|---|---|---|---|
| UID | str | n.a. | Unique ID that identifies the detector.(a,b) |
| TYPE | str | n.a. | Identifies the type of detector, such as ‘CMOS’ or ‘CCD’. |
| SAMPLING_TECHNIQUE | str | n.a. | Identifies the sampling technique, for example ‘Single Reset Read’, ‘Fowler’, ‘Double Correlated’, ‘Uncorrelated’. |
| SHUTTER_TYPE | str | n.a. | Identifies the shutter type, typically ‘Rolling’ or ‘Global’. |
| FLAT_FIELD | str | n.a. | Image-reference. |
| READOUT_NOISE | flt | e− s−1 pix−1 | Digital detector read noise generated by its output amplifier in photoelectrons / second / pixel. |
| PIXEL_INTENSITIES | str | n.a. | Image-reference. |
| FIELD_CENTRE_X | flt | pix | Defines the horizontal coordinate of the detector pixel on which the centre of the field is projected.(d) |
| FIELD_CENTRE_Y | flt | pix | Defines the vertical coordinate of the detector pixel on which the centre of the field is projected.(d) |
| INTEGRATION_TIME | flt | s | Duration in seconds a pixel integrates flux, independent of the detector reading scheme. |
| COADDS | int | count | Number of frame co-additions. |
| DARK | str | n.a. | Image-reference. |
| WEIGHT_MAP | str | n.a. | Image-reference. |
| QUANTUM_EFFICIENCY | flt | n.a. | A 0–1 scalar indicating the ability to convert a photon into a usable electron. Quoted at the central wavelength as an effective value. |
| PIXEL_SCALE | flt | rad pix−1 | Resolution in radians per detector pixel. |
| BINNING | int | count | Integer value indicating the 2D pixel combination by the binning factor |
| BANDWIDTH | flt | m | Width of the filter/bandpass of the optics+detector. |
| TRANSMISSION_WAVELENGTH | lst | m | List of wavelengths that describe a transmission profile.(c) |
| TRANSMISSION | lst | n.a. | List of transmission percentages that describe a transmission profile.(c) |
| SKY_BACKGROUND | str | n.a. | Image-reference. |
| GAIN | flt | e− | Scalar magnitude of detector signal amplification. |
| EXCESS_NOISE | flt | e− | Photon-noise gain factor (scalar) as a result of the electron-multiplied gain amplification in EMCCDs. |
| FILTER | str | n.a. | Name of filter in use. |
| BAD_PIXEL_MAP | str | n.a. | Image-reference. |
| DYNAMIC_RANGE | flt | dB | Ratio of the maximum signal that can be integrated to the rms noise floor. If this ratio is R, then dynamic range in decibels is 20 log R. |
| READOUT_RATE | flt | pix s−1 | Inverse of the time required to digitise a single pixel. |
| FRAME_RATE | flt | frame s−1 | Inverse of the time needed for the detector to acquire an image and then completely read it out. |
| TRANSFORMATION_MATRIX | str | n.a. | Image-reference. |
Notes. (a)Strictly mandatory (value must not be null). (b)All entries in this field must be unique. (c)For each row in the table, entries in these fields must have the same length, equal to the number of wavelengths at which transmission was calculated. (d)A fractional value implies the centre is located in-between two pixels.
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