| Field Name |
Length (bits) |
Bit |
Contents |
Description |
| Item |
Total |
Algn |
Off |
| dataTeEvHist |
128 + 32*n |
32 |
0 |
telemetry Packet |
Data Packet, Timed Exposure, Event Histogram Mode (Patch) |
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 = 4+n |
This field indicates the total number of 32-bit words in the telemetry packet |
formatTag |
6 | 6 |
1 |
42 |
uint6 = 48 |
This field identifies the content of the telemetry packet [see enum TlmFormatTag]: TTAG_SCI_TE_DAT_EV_HIST |
sequenceNumber |
16 | 16 |
1 |
48 |
uint16 |
This field is the sequence number of the telemetry packet |
ccdId |
4 | 4 |
1 |
64 |
uint4 |
Identify which CCD produced the data [see enum CcdId] |
fepId |
3 | 3 |
1 |
68 |
uint3 |
Identify which FEP processed the data [see enum FepId] |
dataPacketNumber |
20 | 20 |
1 |
71 |
uint20 |
Data Packet Number within the current CCD exposure |
outputNodeId |
2 | 2 |
1 |
91 |
uint2 |
Identify which CCD output node produced the histogram data |
startingBin |
16 | 16 |
1 |
93 |
uint16 |
Identify the first histogram bin contained in the packet |
binValues[pl-4] |
32 | 32*n |
32 |
128 |
uint32 |
Low-order 26 bits contain the count of number of pixels at raw pulse height identified by bin #. The high-order 5 bits contain a Hamming error correction code for the word. |