ASTROSAT CZTI

Data Quality Report

Orbit 59222

Creation date: 2026-09-07T22:16:22.310074
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_59222cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59222cztM0_level2_quad_clean.evt
Size (bytes)579,962,880100,949,760
Size553.1 MB 96.3 MB
Events in quadrant A3,350,558694,035
Events in quadrant B3,476,672735,841
Events in quadrant C7,290,950568,756
Events in quadrant D6,814,025576,031

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147692
B0151342
C0264422
D0251982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69121492.155671%
B69132022.922031%
C6913122517.720237%
D69136399.243454%

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 8802 6913 18 18 0.20% 0.26%
B 8803 6913 35 35 0.40% 0.51%
C 8803 6913 929 929 10.55% 13.44%
D 8803 6913 455 455 5.17% 6.58%

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 0 24 164832 835.81 804 781 196.3
A 3 14 27386 135.55 804 781 196.3
A 10 251 22378 110.03 804 781 196.3
B 4 201 95260 557.65 788 760 169.5
B 5 248 57392 334.19 788 760 169.5
B 10 247 56540 329.16 788 760 169.5
C 5 250 2424838 12176.06 730 724 199.1
C 6 223 826267 4146.61 730 724 199.1
C 3 233 458321 2298.46 730 724 199.1
D 12 110 2015672 9452.9 762 732 213.2
D 11 129 1343117 6297.67 762 732 213.2
D 1 27 152861 713.7 762 732 213.2

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