ASTROSAT CZTI

Data Quality Report

Orbit 59199

Creation date: 2026-09-07T11:33:06.016485
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_59199cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59199cztM0_level2_quad_clean.evt
Size (bytes)483,229,440109,097,280
Size460.8 MB 104.0 MB
Events in quadrant A3,957,511718,438
Events in quadrant B3,695,990764,047
Events in quadrant C4,455,047687,175
Events in quadrant D5,203,306618,041

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172663
B0164553
C0185063
D0208193

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7411981.322359%
B74111752.361355%
C74111742.347861%
D74113594.844151%

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 7756 7413 31 31 0.40% 0.42%
B 7756 7413 48 48 0.62% 0.65%
C 7756 7413 95 95 1.22% 1.28%
D 7756 7413 213 213 2.75% 2.87%

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 15 233 455172 2243.36 821 797 202.5
A 10 251 261419 1286.75 821 797 202.5
A 0 24 30622 147.25 821 797 202.5
B 10 247 188013 1075.89 810 781 174.0
B 4 201 90275 514.26 810 781 174.0
B 5 236 71422 405.92 810 781 174.0
C 3 233 704279 3221.77 802 797 218.4
C 15 147 266886 1218.62 802 797 218.4
C 14 254 221994 1013.03 802 797 218.4
D 12 110 1128505 5115.37 782 748 220.5
D 11 129 392192 1775.54 782 748 220.5
D 2 249 202883 916.86 782 748 220.5

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