ASTROSAT CZTI

Data Quality Report

Orbit 59080

Creation date: 2026-08-29T09:18:49.588055
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_004T02_9000006600_59080cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59080cztM0_level2_quad_clean.evt
Size (bytes)754,801,92085,832,640
Size719.8 MB 81.9 MB
Events in quadrant A3,967,186649,034
Events in quadrant B4,597,184700,748
Events in quadrant C3,389,448639,898
Events in quadrant D15,474,491149,304

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164482
B0181852
C0148392
D0502982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65963104.699818%
B65962944.457247%
C6595891.349507%
D6595513177.801365%

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 7821 6597 182 182 2.33% 2.76%
B 7821 6596 173 173 2.21% 2.62%
C 7820 6596 84 84 1.07% 1.27%
D 7819 6594 5125 5125 65.55% 77.72%

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 15 233 564240 3185.36 720 701 176.9
A 10 248 280240 1580.07 720 701 176.9
A 13 248 181979 1024.66 720 701 176.9
B 10 128 1299309 8330.35 729 703 155.9
B 5 185 248723 1591.01 729 703 155.9
B 4 236 73644 467.9 729 703 155.9
C 6 223 279964 1409.91 720 715 198.1
C 12 252 161330 810.94 720 715 198.1
C 14 254 49874 248.2 720 715 198.1
D 12 1 13601689 142931.46 333 318 95.2
D 6 239 403988 4242.01 333 318 95.2
D 12 110 61712 645.17 333 318 95.2

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

TCT plots

Parameter TCT0 TCT_healed
Tct