Struct Fei1Metadata 

pub struct Fei1Metadata {

    pub metadata_size: u32,
    pub metadata_version: u32,
    pub bitmask_1: u32,
    pub timestamp: f64,
    pub microscope_type: [u8; 16],
    pub ht: f64,
    pub dose: f64,
    pub alpha_tilt: f64,
    pub beta_tilt: f64,
    pub x_stage: f64,
    pub y_stage: f64,
    pub z_stage: f64,
    pub tilt_axis_angle: f64,
    pub pixel_size_x: f64,
    pub pixel_size_y: f64,
    pub defocus: f64,
    pub stem_defocus: f64,
    pub applied_defocus: f64,
    pub magnification: f64,
    pub camera_length: f64,
    pub spot_index: i32,
    pub illuminated_area: f64,
    pub intensity: f64,
    pub convergence_angle: f64,
    pub slit_width: f64,
    pub shift_offset_x: f64,
    pub shift_offset_y: f64,
    pub shift_x: f64,
    pub shift_y: f64,
    pub integration_time: f64,
    pub binning_width: i32,
    pub binning_height: i32,
    pub camera_name: [u8; 16],
    pub readout_area_left: i32,
    pub readout_area_top: i32,
    pub readout_area_right: i32,
    pub readout_area_bottom: i32,
    pub ceta_frames_summed: i32,
    pub phase_plate: bool,
    pub gain: f64,
    pub offset: f64,
    pub dwell_time: f64,
    pub frame_time: f64,
    pub full_scan_fov_x: f64,
    pub full_scan_fov_y: f64,
    pub is_dose_fraction: bool,
    pub fraction_number: i32,
    pub start_frame: i32,
    pub end_frame: i32,
    pub alpha_tilt_min: f64,
    pub alpha_tilt_max: f64,
}

Common FEI1 metadata fields.

Fields are parsed from big-endian bytes following the EPU/Thermo Fisher MRC-2014 specification. Not all 185 fields are exposed; only the most frequently used cryo-EM metadata is included. Access raw bytes for unsupported fields.

Fields

metadata_size: u32

Size of this FEI1 record in bytes (should be 768).

metadata_version: u32

Version number of the metadata format.

bitmask_1: u32

Bitmask of acquisition flags (little-endian, unlike the rest of the record).

timestamp: f64

Acquisition timestamp as Unix time (seconds since epoch).

microscope_type: [u8; 16]

Microscope model name as a null-padded byte string.

ht: f64

High tension (acceleration voltage) in kV.

dose: f64

Total electron dose in e⁻/Ų.

alpha_tilt: f64

Stage alpha (primary) tilt angle in degrees.

beta_tilt: f64

Stage beta (secondary) tilt angle in degrees.

x_stage: f64

Stage X position in µm.

y_stage: f64

Stage Y position in µm.

z_stage: f64

Stage Z position in µm.

tilt_axis_angle: f64

Tilt axis rotation angle in degrees.

pixel_size_x: f64

Pixel size in X in Å.

pixel_size_y: f64

Pixel size in Y in Å.

defocus: f64

Objective lens defocus in µm.

stem_defocus: f64

STEM defocus in µm.

applied_defocus: f64

Defocus value applied during acquisition in µm.

magnification: f64

Nominal magnification.

camera_length: f64

Camera length in mm.

spot_index: i32

Selected condenser spot index.

illuminated_area: f64

Illuminated area diameter in µm.

intensity: f64

Beam intensity setting.

convergence_angle: f64

Beam convergence semi-angle in mrad.

slit_width: f64

Energy-filter slit width in eV.

shift_offset_x: f64

Beam shift offset in X as a fraction of full scale.

shift_offset_y: f64

Beam shift offset in Y.

shift_x: f64

Beam shift in X.

shift_y: f64

Beam shift in Y.

integration_time: f64

Exposure/integration time in seconds.

binning_width: i32

Horizontal pixel binning factor.

binning_height: i32

Vertical pixel binning factor.

camera_name: [u8; 16]

Detector/camera name as a null-padded byte string.

readout_area_left: i32

Left pixel coordinate of the readout region.

readout_area_top: i32

Top pixel coordinate of the readout region.

readout_area_right: i32

Right pixel coordinate of the readout region.

readout_area_bottom: i32

Bottom pixel coordinate of the readout region.

ceta_frames_summed: i32

Number of CETA frames summed into this image.

phase_plate: bool

Whether a physical phase plate was inserted.

gain: f64

Detector gain factor.

offset: f64

Detector offset value.

dwell_time: f64

Pixel dwell time in seconds (STEM mode).

frame_time: f64

Total frame exposure time in seconds.

full_scan_fov_x: f64

Full-scan field of view in X in µm.

full_scan_fov_y: f64

Full-scan field of view in Y in µm.

is_dose_fraction: bool

Whether dose fractionation was enabled.

fraction_number: i32

Fraction index within a dose-fractionated series.

start_frame: i32

First frame number of this fraction.

end_frame: i32

Last frame number of this fraction.

alpha_tilt_min: f64

Minimum alpha tilt angle in degrees (tilt series).

alpha_tilt_max: f64

Maximum alpha tilt angle in degrees (tilt series).

Implementations

impl Fei1Metadata

pub fn from_bytes(bytes: &[u8]) -> Option<Self>

Parse a single FEI1 record from bytes.

Returns None if bytes is shorter than FEI1_RECORD_SIZE or if the metadata_size field does not match the expected record size.

Trait Implementations

impl Clone for Fei1Metadata

fn clone(&self) -> Fei1Metadata

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Fei1Metadata

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for Fei1Metadata

fn eq(&self, other: &Fei1Metadata) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Fei1Metadata