ASTROSAT CZTI

Data Quality Report

Orbit 21933

Creation date: 2024-06-27T18:34:09.272007
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/AS1A07_100T03_9000003242_21933cztM0_level2.evt modeM0/AS1A07_100T03_9000003242_21933cztM0_level2_quad_clean.evt
Size (bytes)644,878,080136,437,120
Size615.0 MB 130.1 MB
Events in quadrant A4,968,950911,568
Events in quadrant B3,621,732949,373
Events in quadrant C3,457,782930,224
Events in quadrant D6,985,495830,721

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198081
B0156201
C0152011
D0257681

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73353865.262440%
B7335811.104294%
C7335791.077028%
D7335102013.905930%

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 7640 7336 254 254 3.32% 3.46%
B 7640 7337 21 21 0.27% 0.29%
C 7640 7337 1 1 0.01% 0.01%
D 7640 7335 845 845 11.06% 11.52%

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 1666618 9724.12 850 831 171.3
A 4 2 15318 84.57 850 831 171.3
A 13 254 12917 70.55 850 831 171.3
B 3 64 133948 805.49 869 846 165.2
B 12 111 19920 115.43 869 846 165.2
B 0 190 19900 115.31 869 846 165.2
C 14 238 131724 660.52 849 851 198.1
C 9 54 14418 68.47 849 851 198.1
C 13 61 5872 25.34 849 851 198.1
D 1 52 2000961 10471.01 791 769 191.0
D 12 235 1257026 6576.51 791 769 191.0
D 7 238 607378 3175.6 791 769 191.0

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