ASTROSAT CZTI

Data Quality Report

Orbit 59155

Creation date: 2026-09-03T10:26:56.156729
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_59155cztM0_level2.fits modeM0/AS1T05_264T01_9000006602_59155cztM0_level2_quad_clean.evt
Size (bytes)843,428,16094,849,920
Size804.4 MB 90.5 MB
Events in quadrant A3,604,880732,148
Events in quadrant B3,900,226793,662
Events in quadrant C4,629,118717,623
Events in quadrant D18,496,135100,039

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162372
B0168872
C0189482
D0601712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76001101.447368%
B76002333.065789%
C76002423.184211%
D7601661787.054335%

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 9190 7602 10 10 0.11% 0.13%
B 9190 7603 64 64 0.70% 0.84%
C 9190 7603 123 123 1.34% 1.62%
D 9190 7600 6572 6572 71.51% 86.47%

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 10 251 149219 693.15 872 850 214.1
A 3 245 31591 143.62 872 850 214.1
A 4 3 17408 77.36 872 850 214.1
B 4 236 222525 1186.56 863 829 186.8
B 5 185 209237 1115.44 863 829 186.8
B 12 111 23019 118.77 863 829 186.8
C 5 250 966777 4108.39 849 840 235.1
C 14 254 94784 399.57 849 840 235.1
C 12 252 93397 393.67 849 840 235.1
D 12 1 10921373 101115.92 370 353 108.0
D 12 110 4657375 43118.6 370 353 108.0
D 6 239 724853 6708.03 370 353 108.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct