ASTROSAT CZTI

Data Quality Report

Orbit 08983

Creation date: 2024-06-27T15:39:41.328042
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/AS1A03_025T08_9000001248_08983cztM0_level2.evt modeM0/AS1A03_025T08_9000001248_08983cztM0_level2_quad_clean.evt
Size (bytes)440,542,08081,449,280
Size420.1 MB 77.7 MB
Events in quadrant A3,433,071505,336
Events in quadrant B3,158,160510,644
Events in quadrant C3,079,210500,764
Events in quadrant D3,219,367486,192

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01435620
B01372114
C0138014
D0143096

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6649320.481275%
B6649310.466236%
C6654340.510971%
D6653490.736510%

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 7650 6656 6 6 0.08% 0.09%
B 7650 6656 7 7 0.09% 0.11%
C 7650 6656 23 23 0.30% 0.35%
D 7650 6656 33 33 0.43% 0.50%

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 8 5 369590 2306.1 777 758 159.9
A 5 16 35393 216.55 777 758 159.9
A 15 174 25393 154.03 777 758 159.9
B 4 173 43149 281.9 783 765 150.3
B 4 80 24828 160.05 783 765 150.3
B 0 219 23098 148.54 783 765 150.3
C 14 234 125451 709.95 755 760 175.6
C 12 4 7377 37.67 755 760 175.6
C 13 61 5756 28.45 755 760 175.6
D 1 52 204806 1071.25 746 726 190.5
D 2 14 81156 422.19 746 726 190.5
D 2 152 28889 147.83 746 726 190.5

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