ASTROSAT CZTI

Data Quality Report

Orbit 56709

Creation date: 2026-03-22T20:43:30.223384
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_56709cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56709cztM0_level2_quad_clean.evt
Size (bytes)505,604,16083,033,280
Size482.2 MB 79.2 MB
Events in quadrant A3,909,267545,003
Events in quadrant B5,474,808556,650
Events in quadrant C5,641,163498,470
Events in quadrant D3,232,602502,143

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158161
B0202405
C0209351
D0138611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59003826.474576%
B589871412.105799%
C59015399.134045%
D59011772.999492%

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 6970 5901 280 280 4.02% 4.74%
B 6970 5901 566 566 8.12% 9.59%
C 6971 5902 329 329 4.72% 5.57%
D 6971 5902 125 125 1.79% 2.12%

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 3 62 1271486 8310.23 616 599 152.9
A 10 251 131768 857.7 616 599 152.9
A 8 26 36910 237.43 616 599 152.9
B 5 185 2755778 21274.63 606 586 129.5
B 10 247 92272 707.97 606 586 129.5
B 2 249 60486 462.53 606 586 129.5
C 9 38 2005000 12503.9 581 573 160.3
C 13 3 998550 6225.52 581 573 160.3
C 12 252 103068 639.38 581 573 160.3
D 2 249 484020 2846.08 602 576 169.9
D 2 252 78615 459.42 602 576 169.9
D 5 173 53366 310.78 602 576 169.9

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