ASTROSAT CZTI

Data Quality Report

Orbit 21350

Creation date: 2024-06-27T18:26:39.246891
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/AS1A05_041T01_9000003150_21350cztM0_level2.evt modeM0/AS1A05_041T01_9000003150_21350cztM0_level2_quad_clean.evt
Size (bytes)626,192,64078,871,680
Size597.2 MB 75.2 MB
Events in quadrant A3,519,720504,854
Events in quadrant B3,507,200506,691
Events in quadrant C3,919,271482,641
Events in quadrant D7,597,145459,388

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145192
B0144272
C0158222
D0268992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62291302.087012%
B62291462.343875%
C62292153.451597%
D6229100316.102103%

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 7524 6229 0 0 0.00% 0.00%
B 7524 6229 6 6 0.08% 0.10%
C 7524 6229 7 7 0.09% 0.11%
D 7524 6229 629 629 8.36% 10.10%

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 5 168 74155 419.28 886 870 174.8
A 9 143 12570 66.94 886 870 174.8
A 15 174 10732 56.42 886 870 174.8
B 0 197 34738 206.88 873 853 163.8
B 3 64 27676 163.76 873 853 163.8
B 0 230 21483 125.95 873 853 163.8
C 3 233 502413 2594.83 841 849 193.3
C 14 238 134425 691.05 841 849 193.3
C 13 61 5876 26.01 841 849 193.3
D 13 174 3874762 19420.18 833 811 199.5
D 1 52 311803 1559.01 833 811 199.5
D 13 104 98984 492.14 833 811 199.5

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