ASTROSAT CZTI

Data Quality Report

Orbit 12277

Creation date: 2024-06-27T16:24:52.143959
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/AS1G08_064T01_9000001814_12277cztM0_level2.evt modeM0/AS1G08_064T01_9000001814_12277cztM0_level2_quad_clean.evt
Size (bytes)746,982,72065,980,800
Size712.4 MB 62.9 MB
Events in quadrant A3,880,818396,835
Events in quadrant B9,452,723354,430
Events in quadrant C3,138,973401,119
Events in quadrant D5,684,872365,857

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159622
B0326411
C0140531
D0215621

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6868971.412347%
B6868288942.064648%
C6868620.902737%
D68686809.900990%

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 7560 6871 12 12 0.16% 0.17%
B 7559 6869 2173 2173 28.75% 31.63%
C 7560 6871 0 0 0.00% 0.00%
D 7560 6871 571 571 7.55% 8.31%

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 1 162 129756 770.78 821 802 167.3
A 8 15 103941 616.48 821 802 167.3
A 1 178 74220 438.83 821 802 167.3
B 0 85 4132027 34424.32 626 610 120.0
B 4 239 2481952 20675.36 626 610 120.0
B 3 64 149743 1242.63 626 610 120.0
C 3 233 16351 83.95 796 799 185.2
C 14 234 11722 58.96 796 799 185.2
C 13 61 5989 28.02 796 799 185.2
D 1 52 2109787 11186.01 776 754 188.5
D 10 199 145591 768.2 776 754 188.5
D 13 104 138396 730.03 776 754 188.5

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