ASTROSAT CZTI

Data Quality Report

Orbit 58870

Creation date: 2026-08-15T07:51:28.135898
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_004T07_9000006598_58870cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58870cztM0_level2_quad_clean.evt
Size (bytes)2,480,351,040214,669,440
Size2.3 GB 204.7 MB
Events in quadrant A18,905,6791,418,745
Events in quadrant B25,587,9711,340,036
Events in quadrant C29,949,2791,039,026
Events in quadrant D15,929,4451,408,669

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0693143
B0890886
C01020363
D06009717

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18748333017.761895%
B18748575130.675272%
C18748765140.809686%
D18746199110.620932%

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 20188 18749 2930 2930 14.51% 15.63%
B 20188 18748 4174 4174 20.68% 22.26%
C 20188 18749 7477 7477 37.04% 39.88%
D 20188 18748 2075 2075 10.28% 11.07%

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 14 238 6009230 12767.19 1909 1866 470.5
A 15 233 4500418 9560.57 1909 1866 470.5
A 3 14 442962 937.44 1909 1866 470.5
B 5 172 15986082 41095.31 1829 1755 389.0
B 2 249 860528 2207.88 1829 1755 389.0
B 5 185 615512 1577.95 1829 1755 389.0
C 9 38 21893970 48679.48 1653 1635 449.7
C 6 223 348858 772.08 1653 1635 449.7
C 12 252 338288 748.58 1653 1635 449.7
D 12 110 6885243 12475.92 1930 1845 551.7
D 11 129 533667 963.91 1930 1845 551.7
D 7 222 373852 674.25 1930 1845 551.7

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