ASTROSAT CZTI

Data Quality Report

Orbit 16693

Creation date: 2024-06-27T17:26:20.063611
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T03_024T01_9000002472_16693cztM0_level2.evt modeM0/AS1T03_024T01_9000002472_16693cztM0_level2_quad_clean.evt
Size (bytes)751,124,160111,611,520
Size716.3 MB 106.4 MB
Events in quadrant A4,457,195751,690
Events in quadrant B3,978,465765,110
Events in quadrant C3,831,911736,362
Events in quadrant D9,968,087600,041

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181842
B0165661
C0162121
D0348351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75613114.113213%
B75611892.499669%
C75611391.838381%
D7561262434.704404%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7702 7563 150 150 1.95% 1.98%
B 7702 7563 8 8 0.10% 0.11%
C 7702 7563 0 0 0.00% 0.00%
D 7702 7563 1896 1896 24.62% 25.07%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 699410 3607.49 948 930 193.6
A 9 143 87999 449.69 948 930 193.6
A 12 96 20558 101.37 948 930 193.6
B 15 35 131500 704.6 959 937 185.3
B 0 229 48599 257.21 959 937 185.3
B 0 189 28262 147.46 959 937 185.3
C 14 238 140489 638.02 921 930 218.7
C 3 233 86608 391.69 921 930 218.7
C 7 247 9941 41.2 921 930 218.7
D 1 52 5680419 30305.38 752 732 187.4
D 2 16 1152716 6146.7 752 732 187.4
D 5 222 136504 724.45 752 732 187.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter