ASTROSAT CZTI

Data Quality Report

Orbit 58543

Creation date: 2026-07-24T14:04:54.014045
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_58543cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58543cztM0_level2_quad_clean.evt
Size (bytes)439,076,16096,341,760
Size418.7 MB 91.9 MB
Events in quadrant A3,741,431640,349
Events in quadrant B3,542,913689,181
Events in quadrant C4,512,444570,476
Events in quadrant D3,952,484565,643

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154452
B0149692
C0180572
D0164262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6480671.033951%
B64801241.913580%
C64805708.796296%
D64801812.793210%

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 7610 6481 16 16 0.21% 0.25%
B 7610 6481 48 48 0.63% 0.74%
C 7610 6481 450 450 5.91% 6.94%
D 7610 6481 152 152 2.00% 2.35%

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 801988 4466.91 718 700 179.4
A 10 17 86742 479.66 718 700 179.4
A 4 3 18513 99.3 718 700 179.4
B 0 186 144384 941.69 716 690 152.6
B 0 171 122905 800.93 716 690 152.6
B 10 246 114077 743.07 716 690 152.6
C 14 245 1579021 8527.75 672 666 185.1
C 12 252 106745 573.14 672 666 185.1
C 12 249 73856 395.44 672 666 185.1
D 8 240 292767 1486.43 684 652 196.5
D 2 249 200331 1016.07 684 652 196.5
D 2 153 184863 937.36 684 652 196.5

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