ASTROSAT CZTI

Data Quality Report

Orbit 20220810_A11_079T01_9000005284_level2

Creation date: 2022-08-21T01:29:42.751698
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/AS1A11_079T01_9000005284cztM0_level2_bc.evt modeM0/AS1A11_079T01_9000005284cztM0_level2_quad_clean.evt
Size (bytes)19,585,005,1205,761,748,160
Size18.2 GB 5.4 GB
Events in quadrant A111,836,19337,075,342
Events in quadrant B129,838,96136,703,548
Events in quadrant C147,013,47236,400,931
Events in quadrant D174,236,75433,888,128

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016760
B016760
C016760
D016760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090860
B090860
C090860
D090860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09476920
B010467070
C010484130
D011990730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A44475417390.391003%
B444754105402.369849%
C44475468151.532308%
D444754210364.729806%

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 610963 444850 220 220 0.04% 0.05%
B 610962 444755 1176 1176 0.19% 0.26%
C 610962 444759 1725 1725 0.28% 0.39%
D 610962 444761 4835 4835 0.79% 1.09%

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 16657463 3304.39 23207 22881 5034.1
A 15 237 1575079 308.34 23207 22881 5034.1
A 9 143 1369748 267.55 23207 22881 5034.1
B 5 172 15903135 3540.87 23066 22605 4484.9
B 4 251 6652829 1478.34 23066 22605 4484.9
B 5 184 5225502 1160.09 23066 22605 4484.9
C 10 49 18457003 3536.21 22549 22400 5213.1
C 15 214 18200481 3487.0 22549 22400 5213.1
C 14 254 9952064 1904.75 22549 22400 5213.1
D 2 249 25054786 4790.13 22371 21730 5226.0
D 10 253 15075013 2880.48 22371 21730 5226.0
D 1 52 8356392 1594.86 22371 21730 5226.0

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