Bit

Description

0

1

Comment

BURST CAT

0

Odd Parity

-

-

This is not a data quality information. It is used for checking validation of DQV.

1

Lock flag

Unlocked

Locked

This bit checks K1:GRD-LSC_LOCK_STATE_N (When GRD channel shows 31415, arm cavity is locked).

CAT1

2

SDF flag

Not nominal

Nominal

This bit checks the setting of the IFO control is nominal or not
(It may not work during IMC ER because someone will work on downstream of IMC).

CAT2

3

Science mode

Not Science mode

Science mode

Science mode flag should be turned ON by manually after human check
(It is automatically turned off when the lock is lost).

4

not used

-

-

(This bit will check OMC PD overflow for O3.)

CAT2

5

MCE overflow

Overflow

No overflow

This bit checks MCE coil out overflow. (It will check ETMX for O3.)

CAT2

6

not used

-

-

(This bit will check ETMY coil out overflow.)

CAT2

7

NO Stoch injection

Injection

No injection

This bit checks the injection port of the k1calcs, k1calex, (and k1caley).

CAT4

8

NO CBC injection

Injection

No injection

This bit checks the injection port of the k1calcs, k1calex, (and k1caley).

CAT4

9

NO Burst injection

Injection

No injection

This bit checks the injection port of the k1calcs, k1calex, (and k1caley).

CAT4

10

NO DET injection

Injection

No injection

This bit checks the injection port of the k1calcs, k1calex, (and k1caley).

CAT4

11

NO CW injection

Injection

No injection

This bit checks the injection port of the k1calcs, k1calex, (and k1caley).

CAT4

12

not assigned yet

13

not assigned yet

14

not assigned yet

15

not assigned yet