ASTROSAT CZTI

Data Quality Report

Orbit 20240416_A13_094T02_9000006190_level2

Creation date: 2024-04-20T10:23:56.811126
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/AS1A13_094T02_9000006190cztM0_level2.fits modeM0/AS1A13_094T02_9000006190cztM0_level2_quad_clean.evt
Size (bytes)537,989,760777,576,960
Size513.1 MB 741.6 MB
Events in quadrant A3,108,5024,918,957
Events in quadrant B3,041,2705,054,876
Events in quadrant C3,205,8225,039,902
Events in quadrant D2,638,9644,243,530

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012720
B012720
C012720
D012720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02121920
B01583330
C01374970
D01929270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6260719503.114668%
B6260816272.598709%
C626079121.456706%
D6260757669.209833%

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 74732 62596 0 0 0.00% 0.00%
B 74732 62593 0 0 0.00% 0.00%
C 74732 62587 0 0 0.00% 0.00%
D 74732 62544 0 0 0.00% 0.00%

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 15 236 2527 8.47 812 760 208.5
A 7 110 2460 8.15 812 760 208.5
A 0 29 2412 7.92 812 760 208.5
B 2 9 2940 13.98 805 767 155.5
B 2 8 2361 10.25 805 767 155.5
B 3 17 2258 9.59 805 767 155.5
C 3 202 2483 7.67 848 790 220.7
C 1 80 2394 7.27 848 790 220.7
C 3 203 2374 7.18 848 790 220.7
D 15 47 1968 6.0 758 686 213.5
D 10 189 1963 5.98 758 686 213.5
D 4 16 1952 5.93 758 686 213.5

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