ASTROSAT CZTI

Data Quality Report

Orbit 41761

Creation date: 2024-06-27T22:32:32.187200
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/AS1A12_044T19_9000005698_41761cztM0_level2.fits modeM0/AS1A12_044T19_9000005698_41761cztM0_level2_quad_clean.evt
Size (bytes)87,577,92015,923,520
Size83.5 MB 15.2 MB
Events in quadrant A878,363107,760
Events in quadrant B560,082118,686
Events in quadrant C809,93692,986
Events in quadrant D917,36789,943

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032771
B022251
C029301
D033321

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9419510.095643%
B941171.806589%
C94013714.574468%
D94015015.957447%

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 941 941 66 66 7.01% 7.01%
B 940 940 4 4 0.43% 0.43%
C 940 940 126 126 13.40% 13.40%
D 939 939 120 120 12.78% 12.78%

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 6 10 200463 7945.36 115 112 25.2
A 10 83 143741 5695.93 115 112 25.2
A 7 16 62307 2466.48 115 112 25.2
B 5 255 57323 2359.04 115 112 24.3
B 0 183 22557 925.5 115 112 24.3
B 0 245 14052 574.8 115 112 24.3
C 0 10 372429 14752.04 100 100 25.2
C 15 214 42417 1676.64 100 100 25.2
C 0 207 897 31.58 100 100 25.2
D 2 120 284236 10097.97 108 104 28.1
D 12 6 193051 6857.28 108 104 28.1
D 2 249 22831 807.71 108 104 28.1

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