ASTROSAT CZTI

Data Quality Report

Orbit 52602

Creation date: 2025-06-19T12:17:35.300630
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/AS1C09_011T06_9000006478_52602cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52602cztM0_level2_quad_clean.evt
Size (bytes)876,453,12090,944,640
Size835.9 MB 86.7 MB
Events in quadrant A3,787,496677,591
Events in quadrant B6,654,301654,604
Events in quadrant C10,366,662464,963
Events in quadrant D11,068,359446,034

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168812
B0250451
C0359451
D0380071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73281692.306223%
B732989212.170828%
C7329238132.487379%
D7329239632.692045%

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 7748 7330 109 109 1.41% 1.49%
B 7749 7331 577 577 7.45% 7.87%
C 7749 7331 2334 2334 30.12% 31.84%
D 7749 7331 2405 2405 31.04% 32.81%

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 0 250 217291 1150.59 751 731 188.2
A 3 28 181273 959.22 751 731 188.2
A 4 249 143538 758.73 751 731 188.2
B 10 128 2382106 15762.12 716 691 151.1
B 10 254 569636 3765.74 716 691 151.1
B 4 81 437855 2893.5 716 691 151.1
C 15 248 6386187 36889.89 618 612 173.1
C 4 5 588106 3393.99 618 612 173.1
C 1 44 392341 2263.04 618 612 173.1
D 8 176 2684644 14604.59 628 596 183.8
D 12 16 2600946 14149.17 628 596 183.8
D 2 62 1357971 7385.82 628 596 183.8

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