ASTROSAT CZTI

Data Quality Report

Orbit 55461

Creation date: 2025-12-28T21:27:33.612955
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_099T01_9000006536_55461cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55461cztM0_level2_quad_clean.evt
Size (bytes)456,724,80098,789,760
Size435.6 MB 94.2 MB
Events in quadrant A4,784,487636,369
Events in quadrant B3,559,875701,298
Events in quadrant C3,152,908623,071
Events in quadrant D4,895,331570,339

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188052
B0153782
C0143802
D0191213

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66075227.900711%
B66072253.405479%
C66081402.118644%
D66074757.189345%

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 7757 6607 422 422 5.44% 6.39%
B 7757 6607 46 46 0.59% 0.70%
C 7758 6608 68 68 0.88% 1.03%
D 7757 6607 378 378 4.87% 5.72%

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 78 1918903 10765.39 714 695 178.2
A 0 8 42274 233.35 714 695 178.2
A 7 243 14490 77.42 714 695 178.2
B 5 236 453128 2996.27 711 685 151.0
B 0 171 144570 952.87 711 685 151.0
B 10 247 49577 323.78 711 685 151.0
C 13 3 351248 1820.81 701 693 192.5
C 1 16 24142 121.8 701 693 192.5
C 12 252 16958 84.48 701 693 192.5
D 8 160 622550 3195.15 691 659 194.6
D 9 65 357414 1832.93 691 659 194.6
D 6 239 351642 1803.28 691 659 194.6

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