ASTROSAT CZTI

Data Quality Report

Orbit 58503

Creation date: 2026-07-21T14:25:43.158451
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_044T04_9000006592_58503cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58503cztM0_level2_quad_clean.evt
Size (bytes)543,746,880119,992,320
Size518.6 MB 114.4 MB
Events in quadrant A4,116,004785,555
Events in quadrant B4,107,415845,372
Events in quadrant C6,177,123729,057
Events in quadrant D5,078,332693,328

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182520
B0181160
C0240830
D0210260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83502012.407186%
B83492703.233920%
C83496407.665589%
D83493253.892682%

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 8350 8350 78 78 0.93% 0.93%
B 8349 8349 12 12 0.14% 0.14%
C 8349 8349 462 462 5.53% 5.53%
D 8349 8349 244 244 2.92% 2.92%

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 10 17 249961 1045.54 962 933 238.2
A 4 249 40342 165.46 962 933 238.2
A 10 1 32110 130.9 962 933 238.2
B 4 171 122579 581.38 955 916 209.3
B 0 245 40511 189.21 955 916 209.3
B 10 247 36253 168.86 955 916 209.3
C 15 157 1845150 7393.51 907 897 249.4
C 4 5 218236 871.3 907 897 249.4
C 5 10 168671 672.6 907 897 249.4
D 3 12 991307 3870.61 916 874 255.9
D 2 31 147850 574.38 916 874 255.9
D 12 248 130290 505.76 916 874 255.9

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