ASTROSAT CZTI

Data Quality Report

Orbit 59156

Creation date: 2026-09-03T12:14:19.108751
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_59156cztM0_level2.fits modeM0/AS1T05_264T01_9000006602_59156cztM0_level2_quad_clean.evt
Size (bytes)787,144,32096,402,240
Size750.7 MB 91.9 MB
Events in quadrant A3,547,344720,742
Events in quadrant B3,690,995788,076
Events in quadrant C4,276,361707,613
Events in quadrant D17,034,192175,239

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160350
B0162200
C0179371
D0557850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7575410.541254%
B75761221.610348%
C75751281.689769%
D7575572875.617162%

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 7575 7575 12 12 0.16% 0.16%
B 7576 7576 11 11 0.15% 0.15%
C 7575 7575 101 101 1.33% 1.33%
D 7575 7575 5621 5621 74.20% 74.20%

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 143091 664.68 861 836 214.0
A 3 245 32132 146.23 861 836 214.0
A 15 248 19924 89.19 861 836 214.0
B 5 185 127771 679.3 857 823 186.9
B 0 197 49210 258.92 857 823 186.9
B 4 236 42086 220.8 857 823 186.9
C 5 250 687544 2966.33 837 829 231.5
C 12 252 126731 543.84 837 829 231.5
C 14 254 56766 241.62 837 829 231.5
D 12 1 10130740 91996.14 380 361 110.1
D 12 110 4818482 43754.39 380 361 110.1
D 6 239 540259 4902.93 380 361 110.1

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