ASTROSAT CZTI

Data Quality Report

Orbit 20180317_G08_082T01_9000001986_level2

Creation date: 2023-02-04T15:49:36.260599
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/AS1G08_082T01_9000001986cztM0_level2.fits modeM0/AS1G08_082T01_9000001986cztM0_level2_quad_clean.evt
Size (bytes)1,593,783,3601,620,031,680
Size1.5 GB 1.5 GB
Events in quadrant A9,755,2189,857,049
Events in quadrant B9,444,6969,964,337
Events in quadrant C9,520,8889,331,752
Events in quadrant D8,153,4308,519,793

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02730

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03486510
B03584950
C03520970
D03954000

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033900
B033900
C033900
D033900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16630217871.074551%
B16630224451.470217%
C16630215530.933843%
D16630241222.478623%

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 197765 166301 0 0 0.00% 0.00%
B 197765 166301 0 0 0.00% 0.00%
C 197764 166295 0 0 0.00% 0.00%
D 197765 166291 0 0 0.00% 0.00%

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 0 29 9314 11.06 2537 2372 627.8
A 7 110 7952 8.89 2537 2372 627.8
A 9 19 7170 7.64 2537 2372 627.8
B 2 9 8069 11.75 2492 2379 484.3
B 3 17 6221 7.93 2492 2379 484.3
B 5 128 6198 7.89 2492 2379 484.3
C 1 81 7186 7.46 2515 2336 650.3
C 1 80 7101 7.33 2515 2336 650.3
C 12 241 6626 6.6 2515 2336 650.3
D 6 231 5848 6.06 2329 2122 615.0
D 10 189 5706 5.83 2329 2122 615.0
D 6 67 5591 5.64 2329 2122 615.0

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