ASTROSAT CZTI

Data Quality Report

Orbit 56677

Creation date: 2026-03-20T19:01:29.407061
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_56677cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56677cztM0_level2_quad_clean.evt
Size (bytes)592,027,20091,906,560
Size564.6 MB 87.6 MB
Events in quadrant A4,074,194624,152
Events in quadrant B3,433,684689,681
Events in quadrant C9,375,452433,674
Events in quadrant D4,507,235564,554

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168371
B0143941
C0325321
D0179751

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67562804.144464%
B6756650.962108%
C6756227033.599763%
D67562764.085258%

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 7686 6757 223 223 2.90% 3.30%
B 7686 6757 14 14 0.18% 0.21%
C 7686 6757 2340 2340 30.44% 34.63%
D 7686 6757 286 286 3.72% 4.23%

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 563033 3167.43 721 701 177.5
A 3 14 381648 2145.75 721 701 177.5
A 8 249 92003 514.27 721 701 177.5
B 7 0 286800 1872.34 718 691 152.8
B 4 21 102521 666.39 718 691 152.8
B 10 247 70274 455.36 718 691 152.8
C 15 230 5802097 35137.94 600 592 165.1
C 6 223 790686 4785.36 600 592 165.1
C 9 38 206244 1245.57 600 592 165.1
D 2 249 654638 3344.07 699 669 195.6
D 6 239 388877 1985.1 699 669 195.6
D 13 153 209982 1070.32 699 669 195.6

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