ASTROSAT CZTI

Data Quality Report

Orbit 47820

Creation date: 2024-08-01T10:12:55.635101
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_081T01_9000006354_47820cztM0_level2.fits modeM0/AS1A13_081T01_9000006354_47820cztM0_level2_quad_clean.evt
Size (bytes)546,923,520101,471,040
Size521.6 MB 96.8 MB
Events in quadrant A6,656,089694,987
Events in quadrant B3,060,771721,342
Events in quadrant C2,737,007694,851
Events in quadrant D7,280,339501,836

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239682
B0140342
C0133772
D0263372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65852083.158694%
B6585300.455581%
C658580.121488%
D6585159324.191344%

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 7630 6586 110 110 1.44% 1.67%
B 7630 6585 2 2 0.03% 0.03%
C 7630 6586 4 4 0.05% 0.06%
D 7629 6584 1446 1446 18.95% 21.96%

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 3910676 27294.18 692 677 143.3
A 13 248 28442 193.82 692 677 143.3
A 14 235 21098 142.55 692 677 143.3
B 0 200 219023 1594.0 696 673 137.0
B 10 7 19238 135.53 696 673 137.0
B 0 186 17799 125.02 696 673 137.0
C 1 3 17436 102.9 690 692 162.7
C 12 2 17265 101.85 690 692 162.7
C 14 254 13319 77.6 690 692 162.7
D 12 2 1833688 12090.91 599 580 151.6
D 2 249 1320029 8702.89 599 580 151.6
D 12 3 1299860 8569.86 599 580 151.6

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