ASTROSAT CZTI

Data Quality Report

Orbit 52598

Creation date: 2025-06-19T04:10:23.001628
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_52598cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52598cztM0_level2_quad_clean.evt
Size (bytes)995,489,28072,990,720
Size949.4 MB 69.6 MB
Events in quadrant A4,530,060599,917
Events in quadrant B9,969,476459,306
Events in quadrant C9,471,280438,654
Events in quadrant D12,388,095267,755

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179142
B0340778
C0325442
D0411702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63664366.848885%
B6365251539.512962%
C6365197731.060487%
D6365358756.355067%

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 7536 6367 381 381 5.06% 5.98%
B 7535 6366 2406 2406 31.93% 37.79%
C 7535 6366 1980 1980 26.28% 31.10%
D 7535 6366 3674 3674 48.76% 57.71%

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 4 249 783432 4733.81 656 640 165.4
A 3 114 334819 2020.89 656 640 165.4
A 3 14 138390 833.02 656 640 165.4
B 10 254 2873261 23109.33 584 564 124.3
B 10 128 2595759 20876.97 584 564 124.3
B 10 44 1256463 10103.04 584 564 124.3
C 15 248 6776825 41779.04 579 574 162.2
C 12 254 168706 1036.62 579 574 162.2
C 15 233 96357 590.55 579 574 162.2
D 12 16 3790644 27856.39 463 440 136.1
D 12 1 1749310 12853.45 463 440 136.1
D 15 125 1639484 12046.28 463 440 136.1

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