ASTROSAT CZTI

Data Quality Report

Orbit 46977

Creation date: 2024-06-27T23:30:12.495515
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_071T08_9000006292_46977cztM0_level2.fits modeM0/AS1A13_071T08_9000006292_46977cztM0_level2_quad_clean.evt
Size (bytes)574,980,480106,030,080
Size548.3 MB 101.1 MB
Events in quadrant A7,722,837654,638
Events in quadrant B5,252,554734,119
Events in quadrant C3,147,393716,339
Events in quadrant D4,627,721625,213

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273963
B0203422
C0144032
D0185782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A688277311.232200%
B68823164.591688%
C6883771.118698%
D68834887.089932%

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 7727 6883 642 642 8.31% 9.33%
B 7727 6883 166 166 2.15% 2.41%
C 7728 6884 16 16 0.21% 0.23%
D 7728 6884 386 386 4.99% 5.61%

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 10 83 3455139 22683.95 725 706 152.3
A 14 248 1426790 9364.55 725 706 152.3
A 9 191 26522 169.52 725 706 152.3
B 3 112 2016731 13653.44 745 720 147.7
B 15 201 142188 958.09 745 720 147.7
B 5 32 63805 427.24 745 720 147.7
C 14 254 132116 747.99 750 752 175.6
C 3 233 47574 266.6 750 752 175.6
C 12 2 41969 234.69 750 752 175.6
D 13 249 783650 4324.39 729 706 181.1
D 13 171 540412 2980.93 729 706 181.1
D 1 52 375418 2069.63 729 706 181.1

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