ASTROSAT CZTI

Data Quality Report

Orbit 56205

Creation date: 2026-02-16T23:47:20.513994
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_083T04_9000006550_56205cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56205cztM0_level2_quad_clean.evt
Size (bytes)872,974,08082,287,360
Size832.5 MB 78.5 MB
Events in quadrant A15,909,635176,706
Events in quadrant B4,748,051677,509
Events in quadrant C3,497,085630,430
Events in quadrant D7,616,822518,665

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0519821
B0191421
C0157931
D0275301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7011532475.937812%
B70124706.702795%
C70121111.583001%
D7011113616.203109%

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 7291 7011 5142 5142 70.53% 73.34%
B 7292 7016 205 205 2.81% 2.92%
C 7292 7016 67 67 0.92% 0.95%
D 7291 7014 1082 1082 14.84% 15.43%

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 12 115 12006281 101765.31 466 454 118.0
A 8 176 933007 7904.62 466 454 118.0
A 15 32 549684 4655.45 466 454 118.0
B 4 171 796775 5138.91 727 700 154.9
B 5 185 673553 4343.47 727 700 154.9
B 0 231 81818 523.64 727 700 154.9
C 12 252 433895 2198.92 718 710 197.0
C 9 237 91681 461.78 718 710 197.0
C 6 223 52657 263.69 718 710 197.0
D 11 129 2796280 14468.46 680 652 193.2
D 6 239 711711 3680.01 680 652 193.2
D 13 153 424759 2194.92 680 652 193.2

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