ASTROSAT CZTI

Data Quality Report

Orbit 56076

Creation date: 2026-02-09T19:05:11.181804
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/AS1A14_083T03_9000006548_56076cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56076cztM0_level2_quad_clean.evt
Size (bytes)580,682,880117,100,800
Size553.8 MB 111.7 MB
Events in quadrant A5,143,734753,689
Events in quadrant B4,075,885838,882
Events in quadrant C4,467,799733,282
Events in quadrant D7,151,332632,135

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215840
B0184370
C0194420
D0274570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84543704.376626%
B8454660.780696%
C84541071.265673%
D84548099.569435%

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 8454 8454 295 295 3.49% 3.49%
B 8454 8454 32 32 0.38% 0.38%
C 8454 8454 72 72 0.85% 0.85%
D 8454 8454 842 842 9.96% 9.96%

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 15 32 1131992 5250.13 872 853 215.4
A 7 64 313114 1449.35 872 853 215.4
A 0 8 145266 670.29 872 853 215.4
B 5 185 125789 662.89 885 854 188.5
B 10 247 117605 619.46 885 854 188.5
B 7 252 71271 373.62 885 854 188.5
C 12 252 377339 1599.42 860 850 235.4
C 15 230 178845 756.17 860 850 235.4
C 9 38 139033 587.04 860 850 235.4
D 11 129 2834363 12300.86 819 782 230.4
D 8 240 277161 1199.79 819 782 230.4
D 8 129 221957 960.14 819 782 230.4

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