ASTROSAT CZTI

Data Quality Report

Orbit 52573

Creation date: 2025-06-18T10:36:06.779047
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/AS1C09_011T06_9000006478_52573cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52573cztM0_level2_quad_clean.evt
Size (bytes)626,221,44093,162,240
Size597.2 MB 88.8 MB
Events in quadrant A3,374,684628,963
Events in quadrant B6,752,270646,561
Events in quadrant C4,054,162594,811
Events in quadrant D8,472,093475,078

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153591
B0248501
C0171561
D0299481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68131181.731983%
B68135127.515045%
C68131812.656686%
D6813137320.152649%

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 7244 6814 77 77 1.06% 1.13%
B 7244 6814 368 368 5.08% 5.40%
C 7244 6814 143 143 1.97% 2.10%
D 7244 6814 1491 1491 20.58% 21.88%

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 7 254 144545 819.59 697 681 175.5
A 5 243 129120 731.72 697 681 175.5
A 4 249 94614 535.14 697 681 175.5
B 10 254 3019735 20604.82 681 658 146.5
B 7 0 199778 1358.97 681 658 146.5
B 4 81 141144 958.8 681 658 146.5
C 13 3 658265 3546.18 667 662 185.4
C 12 249 232370 1249.5 667 662 185.4
C 15 248 197177 1059.72 667 662 185.4
D 6 42 2338144 13055.81 621 592 179.0
D 8 176 1253526 6997.95 621 592 179.0
D 2 62 825067 4604.9 621 592 179.0

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