urn:nasa:pds:lro-crater:data-raw-hk:crat_l0_hk_2025326
1.0
LRO CRaTER Lunar Reformatted Raw Data Housekeeping 2025-326 (2025-11-22)
1.18.0.0
Product_Observational
Spence, Harlan E.
2025
Lunar Reconnaissance Orbiter
LRO
Cosmic Ray Telescope for the Effects of Radiation
CRaTER
Raw (Level 0) housekeeping data from CRaTER for year 2025 day 326 (2025-11-22). These
data have been reformatted from the PDS3 data file CRAT_L0_HK_2025326_V02.LBL
during the process of migrating to PDS4. Bit fields in the original file
have been converted to integer values. Field values should be unchanged.
2026-02-24
1.0
This product, CRAT_L0_HK_2025326_V02.xml, is a reformatted
version of the product CRAT_L0_HK_2025326_V02.LBL, which was
originally released as part of the PDS3 EDR dataset. The data
values are unchanged. This version of the data and metadata are
the first version to be migrated to PDS4 so it carries a PDS4
version_id of 1.0.
2025-11-22T00:00:15.27Z
2025-11-22T23:59:59.27Z
Engineering
Raw
LRO
Mission
urn:nasa:pds:context:investigation:mission.lunar_reconnaissance_orbiter
data_to_investigation
CRaTER
Instrument
urn:nasa:pds:context:instrument:lro.crat
is_instrument
LRO
Host
urn:nasa:pds:context:instrument_host:spacecraft.lro
is_instrument_host
Moon
Satellite
urn:nasa:pds:context:target:satellite.earth.moon
data_to_target
SIXTH EXTENDED SCIENCE MISSION
0785462415.25
0785548799.25
1
urn:nasa:pds:lro-crater:data-raw-pri:crat_l0_pri_2025326::1.0
data_to_raw_product
LRO-L-CRAT-2-EDR-RAWDATA-V1.0:CRAT_L0_HK_2025326_V02:CRAT_L0_HK_2025326_V02.DAT
data_to_raw_source_product
10.17189/1519728
NASA Planetary Data System
This is the first version of this product converted to PDS4. The DOI provided
references the PDS3 source data set.
CRAT_L0_HK_2025326_V02.DAT
2025-11-24T20:55:45.000Z
367218
cc793e9e268d83bf4475ad530a1d71f0
This data file has been reformatted from the PDS3 version.
Header Record
0
1
Header for data file, consisting of 1 record. The first three bytes
are spare and not described by a Field_Binary object.
6
0
18
FileID
1
4
UnsignedByte
1
File Identifier (primary science = 200,
housekeeping = 201, secondary science = 202).
202
200
Reserved
2
5
UnsignedMSB4
4
Spare.
StartTimeSec
3
9
UnsignedMSB4
4
s
Spacecraft Time of First Packet in File (elapsed
seconds from epoch 2001-01-01T00:00:00.000 UTC)
2147483647
0
StartTimeSubsec
4
13
UnsignedByte
1
Counts
Spacecraft Time of First Packet in File--Fractional
Seconds. (Use only the 4 most significant bits (MSB) to compute
an unsigned integer corresponding to the number of
1/16th second increments. The 4 remaining bits are
undefined.)
15
0
StopTimeSec
5
14
UnsignedMSB4
4
s
Spacecraft Time of Last Packet in File (elapsed
seconds from epoch 2001-01-01T00:00:00.000 UTC).
2147483647
0
StopTimeSubsec
6
18
UnsignedByte
1
Counts
Spacecraft Time of Last Packet in File--Fractional
Seconds. (Use only the 4 most significant bits (MSB) to compute
an unsigned integer corresponding to the number of
1/16th second increments. The 4 remaining bits are
undefined.)
15
0
Data Table
18
5400
Table containing the measured data.
32
1
68
Version
1
1
UnsignedByte
1
Part of CCSDS Primary and Secondary Headers, ApId = 122.
PacketType
2
2
UnsignedByte
1
Packet Type. Part of CCSDS Primary and Secondary Headers, ApId = 122.
SecHdrFlag
3
3
UnsignedByte
1
Secondary Header Flag (1 = secondary header
follows). Part of CCSDS Primary and Secondary Headers, ApId = 122.
APID
4
4
UnsignedMSB2
2
Application Process ID (120 = primary science; 121 =
secondary science; 122 = housekeeping). Part of CCSDS Primary and
Secondary Headers, ApID = 122.
122
120
SegFlag
5
6
UnsignedByte
1
Packet Segmentation Flag (3 = no segmentation). Part of CCSDS
Primary and Secondary Headers, ApId = 122.
SeqCount
6
7
UnsignedMSB2
2
Sources Sequence Count (separate for each ApId). Part of CCSDS
Primary and Secondary Headers, ApID = 122.
16383
0
PacketLength
7
9
UnsignedMSB2
2
Packet Length (number of bytes following primary
header - 1). Part of CCSDS Primary and Secondary Headers, ApId = 122.
This is the original CCSDS packet length, not the reformatted
record length.
441
0
Time
8
11
UnsignedMSB4
4
s
Spacecraft Time (elapsed seconds from epoch
2001-01-01T00:00:00.000 UTC). Part of CCSDS Primary and
Secondary Headers, ApID = 122.
2147483647
0
FracTime
9
15
UnsignedByte
1
Counts
Spacecraft Time--Fractional Seconds (number of 1/16 sec increments). Part of CCSDS Primary and
Secondary Headers, ApID = 122.
15
0
TestFlag
10
16
UnsignedByte
1
Test Mode Flag (1 = test enabled). Part of CCSDS Primary and Secondary Headers,
ApID = 122.
1
0
OneHertz
11
17
UnsignedByte
1
External 1-Hz Time Sync Pulse Flag (1 = not
received). Part of CCSDS Primary and Secondary Headers,
ApID = 122.
1
0
SerialNumber
12
18
UnsignedByte
1
Instrument Serial Number. Part of CCSDS Primary and Secondary Headers,
ApID = 122.
31
0
FPGA_SN
13
19
UnsignedByte
1
FPGA Revision Code.
15
0
V5Digital
14
20
UnsignedMSB2
2
+5V DC Digital Regulated Voltage Monitor Value. (VOLTS = 0.00200*DN)
4095
0
VAnalogErr
15
22
UnsignedByte
1
Analog Voltage Status Indicator (0 = on; 15 = off,
remaining H/K invalid). (Part of Analog Voltage Status Indicator and
+5V DC Analog Regulated Voltage Monitor Value.)
15
0
V5Plus
16
23
UnsignedMSB2
2
+5V DC Analog Regulated Voltage Monitor Value. (Part of Analog Voltage Status Indicator
and +5V DC Analog Regulated Voltage Monitor Value.) (VOLTS = 0.00200*DN.)
4095
0
V5Neg
17
25
UnsignedMSB2
2
-5V DC Analog Regulated Voltage Monitor Value. (VOLTS = -0.00201*DN.)
4095
0
BiasCurrents
6
1
0
Detector Bias Current Monitor Values (AMPS = 5E-10*DN,
5E-9*DN, 5E-10*DN, ...).
27
12
BiasCurrent
1
1
UnsignedMSB2
2
Detector Bias Current Monitor Value. (AMPS = 5E-10*DN, 5E-9*DN, 5E-10*DN, ...)
4095
0
BiasVoltThin
24
39
UnsignedMSB2
2
Thin Detector (D1, D3, D5) Bias Monitor Value.
(VOLTS = 0.101*DN.)
4095
0
BiasVoltThick
25
41
UnsignedMSB2
2
Thick Detector (D1, D3, D5) Bias Monitor Value.
(VOLTS = 0.101*DN.)
4095
0
CalAmp
26
43
UnsignedMSB2
2
Internal Calibration Pulser Amplitude Monitor Value.
(VOLTS = 0.00100*DN.)
4095
0
LLDThin
27
45
UnsignedMSB2
2
LLD Amplitude Monitor Value--Thin Detectors (D1, D3, D5).
(VOLTS = 0.000124*DN - 0.124.)
4095
0
LLDThick
28
47
UnsignedMSB2
2
LLD Amplitude Monitor Value--Thick Detectors (D2, D4, D6).
(VOLTS = 0.000124*DN - 0.124.)
4095
0
TTelescope
29
49
UnsignedMSB2
2
Temperature Monitor Value--Telescope Assembly
(in UNITS formula V5plus in volts).
(CELSIUS = 100*V5plus(field 18 in volts) - 0.100*DN - 273.2.)
4095
0
TAnalog
30
51
UnsignedMSB2
2
Temperature Monitor Value--Analog Electronics Board
(in UNITS formula V5plus in volts).
(CELSIUS = 100*V5plus(field 18 in volts) - 0.100*DN - 273.2.)
4095
0
TDigital
31
53
UnsignedMSB2
2
Temperature Monitor Value--Digital Electronics Board
(in UNITS formula V5plus in volts).
(CELSIUS = 100*V5plus(field 18 in volts) - 0.100*DN - 273.2.)
4095
0
TPower
32
55
UnsignedMSB2
2
Temperature Monitor Value--Power Supply
(in UNITS formula V5plus in volts).
(CELSIUS = 100*V5plus(field 18 in volts) - 0.100*DN - 273.2.)
4095
0
TRef
33
57
UnsignedMSB2
2
Temperature Monitor Value--Reference Location,
Telescope Housing Wall (in UNITS formula V5plus in volts).
(CELSIUS = 100*V5plus(field 18 in volts) - 0.100*DN - 273.2.)
4095
0
RadHighSens
34
59
UnsignedMSB2
2
Radiation Monitor Scalar Output--High Sensitivity. (RADS = 0.00002*((DN+8)/16).
4095
0
RadMedSens
35
61
UnsignedMSB2
2
Radiation Monitor Scalar Output--Medium Sensitivity. (RADS = 0.00512*((DN+8)/16).)
4095
0
RadLowSens
36
63
UnsignedMSB2
2
Radiation Monitor Scalar Output--Low Sensitivity. (RADS = 1.31*((DN+8)/16).)
4095
0
TPRT
37
65
UnsignedMSB2
2
Temperature Monitor Value--Reference Location,
Instrument Chassis (ground test only).
(CELSIUS = 0.1299*(4*DN-1E4)/(5-DN/1E3).)
4095
0
Purge
38
67
UnsignedMSB2
2
GN2 Purge Flow Rate Monitor Value (ground test only)
(in UNITS formula V5plus in volts, Tref in Celsius).
(CU FT/HR = DN-0.371*V5plus(field 18 in volts)+19*(Tref(field 35 in Celsius)-20).)
4095
0