ASTROSAT CZTI

Data Quality Report

Orbit 56782

Creation date: 2026-03-27T18:41:49.147721
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_56782cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56782cztM0_level2_quad_clean.evt
Size (bytes)443,626,56089,982,720
Size423.1 MB 85.8 MB
Events in quadrant A4,392,270598,159
Events in quadrant B4,690,512608,255
Events in quadrant C4,035,234554,245
Events in quadrant D2,832,737540,740

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175951
B0181741
C0163591
D0127981

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60611131.864379%
B60615038.298961%
C60612554.207227%
D6061480.791949%

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 7192 6062 43 43 0.60% 0.71%
B 7192 6062 287 287 3.99% 4.73%
C 7192 6062 213 213 2.96% 3.51%
D 7192 6062 25 25 0.35% 0.41%

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 1526409 9348.42 658 643 163.2
A 10 251 248760 1520.22 658 643 163.2
A 3 62 22821 135.89 658 643 163.2
B 4 206 1423110 10577.85 630 609 134.5
B 2 249 367274 2726.55 630 609 134.5
B 10 247 101647 751.33 630 609 134.5
C 15 230 470646 2738.8 623 617 171.6
C 9 38 375152 2182.37 623 617 171.6
C 14 96 368326 2142.59 623 617 171.6
D 2 249 169382 930.42 638 610 181.4
D 5 173 47112 256.36 638 610 181.4
D 15 142 43233 234.98 638 610 181.4

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