ASTROSAT CZTI

Data Quality Report

Orbit 20210529_C05_007T01_9000004418_level2

Creation date: 2025-12-26T04:31:05.021179
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/AS1C05_007T01_9000004418cztM0_level2.fits modeM0/AS1C05_007T01_9000004418cztM0_level2_quad_clean.evt
Size (bytes)503,784,000290,194,560
Size480.4 MB 276.8 MB
Events in quadrant A3,271,3181,521,857
Events in quadrant B2,983,4221,445,425
Events in quadrant C3,088,1321,410,914
Events in quadrant D2,590,0601,085,465

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01067500
B01619990
C01123070
D02065690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09840
B09840
C09840
D09840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0930
B0930
C0930
D0930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A484005951.229339%
B4840034817.192149%
C484009571.977273%
D48400601712.431818%

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 57675 48397 0 0 0.00% 0.00%
B 57675 48390 0 0 0.00% 0.00%
C 57675 48398 0 0 0.00% 0.00%
D 57675 48397 0 0 0.00% 0.00%

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 29 2694 9.1 853 806 207.5
A 7 110 2527 8.29 853 806 207.5
A 9 19 2438 7.86 853 806 207.5
B 2 9 2336 10.17 788 756 155.3
B 5 128 2030 8.2 788 756 155.3
B 5 225 1954 7.71 788 756 155.3
C 1 81 2327 7.53 817 768 207.1
C 1 80 2284 7.32 817 768 207.1
C 3 187 2098 6.42 817 768 207.1
D 15 46 1984 6.71 740 678 194.7
D 10 189 1861 6.08 740 678 194.7
D 7 3 1807 5.8 740 678 194.7

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