ASTROSAT CZTI

Data Quality Report

Orbit 53630

Creation date: 2025-08-27T18:47:39.679276
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_022T05_9000006504_53630cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53630cztM0_level2_quad_clean.evt
Size (bytes)970,637,76075,905,280
Size925.7 MB 72.4 MB
Events in quadrant A8,979,872457,768
Events in quadrant B7,563,597550,117
Events in quadrant C10,620,675354,169
Events in quadrant D8,275,483491,860

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309732
B0268362
C0357852
D0289342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6354223935.237646%
B6354176827.824992%
C6355299647.143981%
D6355143122.517703%

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 7524 6361 2132 2132 28.34% 33.52%
B 7524 6361 1375 1375 18.27% 21.62%
C 7525 6362 2835 2835 37.67% 44.56%
D 7525 6362 1453 1453 19.31% 22.84%

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 4 95 3135133 19716.03 641 624 159.0
A 3 78 1985410 12484.28 641 624 159.0
A 10 253 746803 4693.46 641 624 159.0
B 15 20 3581696 25357.56 655 632 141.2
B 4 206 649418 4594.06 655 632 141.2
B 10 254 176550 1245.68 655 632 141.2
C 1 241 5912274 41736.65 511 506 141.6
C 15 224 2111803 14905.6 511 506 141.6
C 13 3 179170 1261.35 511 506 141.6
D 8 176 4566086 24024.98 657 624 190.0
D 2 153 229771 1205.85 657 624 190.0
D 2 120 180143 944.69 657 624 190.0

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