| Field Name |
Length (bits) |
Bit |
Contents |
Description |
| Item |
Total |
Algn |
Off |
| dataTeBiasMap |
352 + 32*n |
32 |
0 |
telemetry Packet |
Portion of a Timed Exposure Bias Map from one FEP (see table 25, swreq Rev. I) |
header |
64 | 64 |
32 |
0 |
telemetry Header |
Telemetry Packet Header |
synch |
32 | 32 |
32 |
0 |
uint32 = 0x736f4166 |
This field delimits the start of a telemetry packet. |
telemetryLength |
10 | 10 |
1 |
32 |
uint10 = 11+n |
This field indicates the total number of 32-bit words in the telemetry packet |
formatTag |
6 | 6 |
1 |
42 |
uint6 = 14 |
This field identifies the content of the telemetry packet [see enum TlmFormatTag]: TTAG_SCI_TE_BIAS |
sequenceNumber |
16 | 16 |
1 |
48 |
uint16 |
This field is the sequence number of the telemetry packet |
biasStartTime |
32 | 32 |
32 |
64 |
uint32 |
Science timestamp counter value at start of bias computation |
biasParameterId |
32 | 32 |
32 |
96 |
uint32 |
Bias Run's Parameter Block's Identifier field |
ccdId |
4 | 4 |
1 |
128 |
uint4 |
Identify which CCD produced the data [see enum CcdId] |
fepId |
3 | 3 |
1 |
132 |
uint3 |
Identifies which FEP computed and used the bias map [see enum FepId] |
dataPacketNumber |
16 | 16 |
16 |
144 |
uint16 |
Bias Packet Sequence Number |
initialOverclocks[4] |
16 | 64 |
16 |
160 |
uint16 |
Output node initial overclock values added to pixel map values (In Full/Diag Mode, nodes are ordered as [A, B, C, D]. In AC mode, [A, C, x, x], and in BD mode [B, D, x, x]) |
pixelsPerRow |
10 | 10 |
1 |
224 |
uint10 |
Total number of pixels in each bias row minus 1 (i.e. 0 corresponds to 1 pixel) |
rowsPerBias |
10 | 10 |
1 |
234 |
uint10 |
Total number of rows in bias image minus 1 (i.e. 0 corresponds to 1 row) |
ccdRow |
10 | 10 |
1 |
244 |
uint10 |
CCD Row position of first pixel in data packet |
ccdRowCount |
10 | 10 |
1 |
254 |
uint10 |
Number of rows compressed into this data packet minus 1 |
compressionTableSlotIndex |
8 | 8 |
1 |
264 |
uint8 |
Slot index of Compression Table Identifier used to pack data (255 no compression) |
compressionTableIdentifier |
32 | 32 |
1 |
272 |
uint32 |
Identifier stored within Huffman Compression Table used to pack data (0 if no compression) |
pixelCount |
32 | 32 |
1 |
304 |
uint32 |
The total number of pixels packed into the packet |
data[pl-11] |
32 | 32*n |
32 |
352 |
uint32 |
Compressed bias map data values (12-bits/uncompressed value). Indexed by column, starting from 0. Rows sent in reverse order (farthest from Framestore first) |