ASTROSAT CZTI

Data Quality Report

Orbit 59269

Creation date: 2026-09-11T02:10:31.225755
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_271T01_9000006604_59269cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59269cztM0_level2_quad_clean.evt
Size (bytes)452,831,04095,094,720
Size431.9 MB 90.7 MB
Events in quadrant A3,240,587630,303
Events in quadrant B3,290,272682,661
Events in quadrant C3,511,400614,807
Events in quadrant D6,240,513521,088

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139181
B0140311
C0144091
D0228981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61681342.172503%
B61681682.723735%
C61691131.831739%
D616975812.287243%

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 7383 6169 99 99 1.34% 1.60%
B 7383 6169 97 97 1.31% 1.57%
C 7384 6170 59 59 0.80% 0.96%
D 7384 6170 649 649 8.79% 10.52%

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 329370 1926.79 694 675 170.6
A 0 24 165999 969.12 694 675 170.6
A 15 233 29629 169.73 694 675 170.6
B 4 236 286482 1952.37 691 664 146.4
B 5 185 96417 654.07 691 664 146.4
B 4 201 89262 605.2 691 664 146.4
C 3 233 279537 1455.45 693 688 191.6
C 12 252 211904 1102.44 693 688 191.6
C 15 198 132843 689.78 693 688 191.6
D 11 129 1260884 6644.63 664 635 189.7
D 5 38 1251372 6594.47 664 635 189.7
D 12 110 906173 4774.42 664 635 189.7

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