ASTROSAT CZTI

Data Quality Report

Orbit 56672

Creation date: 2026-03-20T09:44:03.195980
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_083T06_9000006558_56672cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56672cztM0_level2_quad_clean.evt
Size (bytes)607,331,520130,452,480
Size579.2 MB 124.4 MB
Events in quadrant A5,830,244832,727
Events in quadrant B4,336,129932,051
Events in quadrant C4,743,490811,369
Events in quadrant D6,857,542735,344

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240363
B0197090
C0207440
D0270450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A92014214.575590%
B9201680.739050%
C9201630.684708%
D92024885.303195%

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 9200 9200 410 410 4.46% 4.46%
B 9200 9200 26 26 0.28% 0.28%
C 9200 9200 39 39 0.42% 0.42%
D 9201 9201 499 499 5.42% 5.42%

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 26 1562805 6488.93 979 954 240.7
A 0 8 357236 1480.22 979 954 240.7
A 8 249 57806 236.2 979 954 240.7
B 4 21 125163 581.76 994 955 213.5
B 0 213 100856 467.91 994 955 213.5
B 10 247 42172 193.05 994 955 213.5
C 12 252 227863 863.31 968 960 262.8
C 15 148 190363 720.63 968 960 262.8
C 9 38 78226 293.98 968 960 262.8
D 8 240 1465492 5589.43 942 903 262.0
D 2 249 810860 3091.11 942 903 262.0
D 10 199 180694 686.15 942 903 262.0

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