ASTROSAT CZTI

Data Quality Report

Orbit 00165

Creation date: 2024-06-27T13:57:17.202563
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/AS1P01_120T01_9000000006_00165cztM0_level2.evt modeM0/AS1P01_120T01_9000000006_00165cztM0_level2_quad_clean.evt
Size (bytes)895,089,60044,064,000
Size853.6 MB 42.0 MB
Events in quadrant A6,739,183235,431
Events in quadrant B6,892,856242,055
Events in quadrant C6,105,975242,364
Events in quadrant D7,001,401225,625

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01206
B01206
C01206
D01204

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024941997
B025291898
C022948867
D025599831

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5535120.216802%
B5541230.415088%
C553540.072267%
D55542183.925099%

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 7366 5589 137 137 1.86% 2.45%
B 7366 5585 167 167 2.27% 2.99%
C 7366 5580 53 53 0.72% 0.95%
D 7366 5596 429 429 5.82% 7.67%

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 12 244 60499 158.68 1692 1677 370.7
A 14 10 56487 147.85 1692 1677 370.7
A 13 17 29617 75.37 1692 1677 370.7
B 10 199 326234 821.14 1670 1684 395.2
B 5 216 83525 207.06 1670 1684 395.2
B 8 233 17562 40.17 1670 1684 395.2
C 8 31 28327 62.54 1516 1570 427.8
C 0 188 26999 59.44 1516 1570 427.8
C 0 202 23340 50.88 1516 1570 427.8
D 13 71 628811 1353.59 1503 1556 463.4
D 13 28 141908 302.87 1503 1556 463.4
D 7 68 125425 267.3 1503 1556 463.4

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