ASTROSAT CZTI

Data Quality Report

Orbit 28706

Creation date: 2024-06-27T19:55:11.969610
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/AS1A10_021T08_9000004118_28706cztM0_level2.evt modeM0/AS1A10_021T08_9000004118_28706cztM0_level2_quad_clean.evt
Size (bytes)535,786,56076,608,000
Size511.0 MB 73.1 MB
Events in quadrant A3,715,839470,565
Events in quadrant B3,789,836475,720
Events in quadrant C3,589,407460,113
Events in quadrant D4,679,861449,205

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149622
B0151692
C0144303
D0183132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66601422.132132%
B66602273.408408%
C66591942.913350%
D66592193.288782%

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 7610 6660 21 21 0.28% 0.32%
B 7610 6660 103 103 1.35% 1.55%
C 7609 6659 1 1 0.01% 0.02%
D 7609 6659 120 120 1.58% 1.80%

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 14 254 166891 940.2 885 867 176.6
A 4 2 83546 468.21 885 867 176.6
A 13 6 30397 167.23 885 867 176.6
B 4 80 327841 1979.75 862 843 165.2
B 15 33 31459 185.36 862 843 165.2
B 0 190 21664 126.06 862 843 165.2
C 14 238 150464 752.08 850 855 198.9
C 3 233 76819 381.87 850 855 198.9
C 14 254 24362 118.17 850 855 198.9
D 1 52 786089 3855.87 856 832 203.7
D 8 195 358263 1755.1 856 832 203.7
D 2 250 89460 435.19 856 832 203.7

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