ASTROSAT CZTI

Data Quality Report

Orbit 59152

Creation date: 2026-09-03T05:12:17.556047
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/AS1T05_264T01_9000006602_59152cztM0_level2.fits modeM0/AS1T05_264T01_9000006602_59152cztM0_level2_quad_clean.evt
Size (bytes)620,884,80086,587,200
Size592.1 MB 82.6 MB
Events in quadrant A3,221,368638,214
Events in quadrant B3,105,256703,310
Events in quadrant C3,525,663623,437
Events in quadrant D12,646,367222,231

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137822
B0133932
C0147482
D0418452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6230941.508828%
B62301191.910112%
C62301893.033708%
D6229402664.633167%

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 7440 6231 29 29 0.39% 0.47%
B 7440 6231 31 31 0.42% 0.50%
C 7440 6231 142 142 1.91% 2.28%
D 7438 6228 3978 3978 53.48% 63.87%

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 3 254 149231 845.03 714 696 175.8
A 3 14 116838 660.75 714 696 175.8
A 10 251 108108 611.08 714 696 175.8
B 4 236 132874 871.7 714 690 151.6
B 5 236 53946 351.2 714 690 151.6
B 5 185 23681 151.62 714 690 151.6
C 5 250 386757 2005.63 698 692 192.5
C 14 254 288784 1496.65 698 692 192.5
C 5 233 39251 200.32 698 692 192.5
D 12 1 9048546 87560.25 358 341 103.3
D 12 110 1789421 17313.08 358 341 103.3
D 6 239 170373 1645.41 358 341 103.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct