ASTROSAT CZTI

Data Quality Report

Orbit 35147

Creation date: 2022-03-29T22:40:23.023750
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_065T05_9000005032_35147cztM0_level2.evt modeM0/AS1A11_065T05_9000005032_35147cztM0_level2_quad_clean.evt
Size (bytes)544,043,52092,134,080
Size518.8 MB 87.9 MB
Events in quadrant A3,647,439622,067
Events in quadrant B3,708,130631,455
Events in quadrant C2,993,708619,679
Events in quadrant D5,796,906573,825

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138472
B0141821
C0117861
D0207121

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A489350310.279992%
B48932605.313713%
C48931062.166360%
D48933747.643572%

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 7046 4894 280 280 3.97% 5.72%
B 7046 4894 180 180 2.55% 3.68%
C 7046 4894 82 82 1.16% 1.68%
D 7046 4894 420 420 5.96% 8.58%

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 15 169 1145587 9266.93 621 611 123.6
A 10 83 59322 475.18 621 611 123.6
A 9 143 26783 211.82 621 611 123.6
B 5 236 1119115 9703.3 614 602 115.3
B 5 172 94881 817.89 614 602 115.3
B 0 189 52347 448.9 614 602 115.3
C 0 10 387706 2787.81 608 615 138.9
C 15 214 207404 1489.28 608 615 138.9
C 1 23 15200 105.04 608 615 138.9
D 8 195 2790688 18925.26 610 596 147.4
D 13 249 173356 1171.84 610 596 147.4
D 2 250 104651 705.81 610 596 147.4

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