BadPixelMap Data Product#
FITS HDU Structure#
Index |
Name |
Datatype |
Array Size |
|---|---|---|---|
0 |
Primary |
None |
0 |
1 |
Image |
float32 |
(1024, 1024) |
2 |
ERR |
float32 |
(1, 1024, 1024) |
3 |
DQ |
uint16 |
(1024, 1024) |
Header#
Primary Header (HDU 0)#
Keyword |
Datatype |
Example Value |
Description |
|---|---|---|---|
SIMPLE |
bool |
True |
conforms to FITS standard |
BITPIX |
int |
8 |
array data type |
NAXIS |
int |
0 |
number of array dimensions |
EXTEND |
bool |
True |
Denotes FITS extensions |
VISITID |
str |
-999 |
The full visit ID assigned to this pointing |
CDMSVERS |
str |
331 |
SSC CDMS pipeline build version used to generate L1 |
FSWDVERS |
str |
1.1.3 |
Record of the CGI FSW dictionary used to parse the telemetry |
MOCK |
bool |
True |
Only used for simulated data examples |
TELESCOP |
str |
ROMAN |
Telescope name |
INSTRUME |
str |
CGI |
Instrument designation |
DETECTOR |
str |
EXCAM |
Name of the detector |
ORIGIN |
str |
DRP |
Who is responsible for the data |
FILETIME |
str |
2026-02-20T04:35:34.595972+… |
When file was created |
DATAVERS |
int |
1 |
Version of data (increments for reprocessing) |
PROGNUM |
str |
-999 |
The Program ID in visit hierarchy (first 5 digits) |
EXECNUM |
str |
-999 |
The Execution Number in visit hierarchy (digits 6-7) |
CAMPAIGN |
str |
-999 |
The Pass/Campaign in visit hierarchy (digits 8-10) |
SEGMENT |
str |
-999 |
The Segment Number in visit hierarchy (digits 11-13) |
OBSNUM |
str |
-999 |
The Observation Number in visit hierarchy (digits 14-16) |
VISNUM |
str |
-999 |
The Visit number in visit hierarchy (digits 17-19) |
CPGSFILE |
str |
-999 |
Campaign-level XML containing the current visit |
AUXFILE |
str |
-999 |
An AUX file associated with this observation |
VISTYPE |
str |
-999 |
The visit file template used for this observation |
TARGET |
str |
-999 |
Name of pointing target |
RA |
float |
-999.0 |
Planned RA |
DEC |
float |
-999.0 |
Planned DEC |
EQUINOX |
float |
2000 |
J2000 |
RAPM |
float |
-999.0 |
RA proper motion |
DECPM |
float |
-999.0 |
DEC proper motion |
PSFREF |
int |
0 |
Whether this is a PSF reference observation or not |
OPGAIN |
str |
-999 |
Planned EXCAM EM gain or “AUTO” |
PHTCNT |
str |
-999 |
Whether photon counting mode is planned, or if set to “AUTO”. “FALSE” = Photon-counting mode not planned. “TRUE”=Photon- |
FRAMET |
str |
-999 |
Planned exposure time per frame or if set to “AUTO”. Taken from the observation plan |
PA_V3 |
float |
-999.0 |
Observatory position angle |
PA_APER |
float |
-999.0 |
Position angle in the CGI aperture |
SVB_1 |
float |
-999.0 |
Sun unit vector in the body frame axis 1 |
SVB_2 |
float |
-999.0 |
Sun unit vector in the body frame axis 2 |
SVB_3 |
float |
-999.0 |
Sun unit vector in the body frame axis 3 |
ROLL |
float |
-999.0 |
S/C roll angle wrt the reference frame |
PITCH |
float |
-999.0 |
S/C pitch angle wrt the reference frame |
YAW |
float |
-999.0 |
S/C yaw angle wrt the reference frame |
FILENAME |
str |
cgi_0089001001001001109_202… |
The name of the file |
OBSNAME |
str |
-999 |
User-defined label for the associated observation plan |
WBJ_1 |
float |
-999.0 |
S/C angular momentum axis 1 |
WBJ_2 |
float |
-999.0 |
S/C angular momentum axis 2 |
WBJ_3 |
float |
-999.0 |
S/C angular momentum axis 3 |
Image Header (HDU 1)#
ERR Header (HDU 2)#
Keyword |
Datatype |
Example Value |
Description |
|---|---|---|---|
XTENSION |
str |
IMAGE |
Image extension |
BITPIX |
int |
-64 |
array data type |
NAXIS |
int |
3 |
number of array dimensions |
NAXIS1 |
int |
1024 |
Raw data axis 1 size |
NAXIS2 |
int |
1024 |
Raw data axis 2 size for SCI frames (1200) or ENG frames (2200) |
NAXIS3 |
int |
1 |
Length of third array dimension (axis 3) |
PCOUNT |
int |
0 |
number of parameters |
GCOUNT |
int |
1 |
number of groups |
EXTNAME |
str |
ERR |
FITS extension name |
TRK_ERRS |
bool |
False |
Whether individual errors are tracked (T/F) |
LAYER_1 |
str |
combined_error |
|
BUNIT |
str |
-999 |
|
KGAINPAR |
float |
-999.0 |
|
KGAIN_ER |
float |
0.0 |
|
RN |
float |
100.0 |
|
RN_ERR |
float |
0.0 |
|
DESMEAR |
bool |
True |
|
HISTORY |
str |
Added error term: prescan_b… |
|
COMMENT |
str |
err not meaningful for this… |
DQ Header (HDU 3)#
Keyword |
Datatype |
Example Value |
Description |
|---|---|---|---|
XTENSION |
str |
IMAGE |
Image extension |
BITPIX |
int |
16 |
array data type |
NAXIS |
int |
2 |
number of array dimensions |
NAXIS1 |
int |
1024 |
Raw data axis 1 size |
NAXIS2 |
int |
1024 |
Raw data axis 2 size for SCI frames (1200) or ENG frames (2200) |
PCOUNT |
int |
0 |
number of parameters |
GCOUNT |
int |
1 |
number of groups |
BSCALE |
int |
1 |
Linear factor in scaling equation. Needed for non-standard FITS data types |
BZERO |
int |
32768 |
Offset for 16-bit unsigned data type (FITS format determined) |
EXTNAME |
str |
DQ |
FITS extension name |
COMMENT |
str |
DQ not meaningful for this … |