ASTROSAT CZTI

Data Quality Report

Orbit 56830

Creation date: 2026-03-31T00:45:18.048953
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_9000006562_56830cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56830cztM0_level2_quad_clean.evt
Size (bytes)590,590,080105,471,360
Size563.2 MB 100.6 MB
Events in quadrant A6,726,412681,947
Events in quadrant B4,216,913745,593
Events in quadrant C6,552,032615,924
Events in quadrant D3,790,628632,641

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253761
B0177631
C0246511
D0167261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74303064.118439%
B74311852.489571%
C74316899.271969%
D7431740.995828%

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 7580 7431 95 95 1.25% 1.28%
B 7581 7432 85 85 1.12% 1.14%
C 7581 7432 533 533 7.03% 7.17%
D 7581 7432 62 62 0.82% 0.83%

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 14 3067178 15688.77 788 768 195.5
A 10 251 357470 1825.01 788 768 195.5
A 7 255 169179 861.65 788 768 195.5
B 5 185 525544 3111.8 784 755 168.6
B 10 16 103755 610.75 784 755 168.6
B 5 172 85252 501.03 784 755 168.6
C 9 38 1436663 7219.51 727 716 198.9
C 12 249 812596 4081.89 727 716 198.9
C 13 3 604445 3035.37 727 716 198.9
D 2 249 248870 1154.28 767 732 215.0
D 2 31 183244 849.0 767 732 215.0
D 2 120 113457 524.37 767 732 215.0

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