ASTROSAT CZTI

Data Quality Report

Orbit 36483

Creation date: 2022-06-28T11:27:52.741896
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/AS1A11_049T04_9000005210_36483cztM0_level2.evt modeM0/AS1A11_049T04_9000005210_36483cztM0_level2_quad_clean.evt
Size (bytes)349,070,40057,830,400
Size332.9 MB 55.2 MB
Events in quadrant A2,327,623358,890
Events in quadrant B2,676,622357,665
Events in quadrant C2,442,010348,518
Events in quadrant D2,788,254338,595

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101502
B0111451
C0103451
D0118261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495280.161551%
B4952470.949111%
C4952180.363489%
D49521122.261712%

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 6295 4953 1 1 0.02% 0.02%
B 6295 4953 32 32 0.51% 0.65%
C 6295 4953 10 10 0.16% 0.20%
D 6295 4953 85 85 1.35% 1.72%

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 10 83 132494 1148.4 564 552 114.9
A 9 143 10892 90.0 564 552 114.9
A 13 254 7571 61.09 564 552 114.9
B 5 255 321186 2968.2 556 541 108.0
B 5 172 94727 871.88 556 541 108.0
B 0 190 23857 215.84 556 541 108.0
C 15 214 208558 1640.86 542 546 126.8
C 0 10 94774 743.3 542 546 126.8
C 8 79 16084 122.57 542 546 126.8
D 13 249 362431 2739.44 540 525 132.1
D 2 250 86416 650.15 540 525 132.1
D 12 17 40784 304.74 540 525 132.1

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