ASTROSAT CZTI

Data Quality Report

Orbit 46596

Creation date: 2024-06-27T23:25:16.453954
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/AS1A13_092T08_9000006236_46596cztM0_level2.fits modeM0/AS1A13_092T08_9000006236_46596cztM0_level2_quad_clean.evt
Size (bytes)599,699,520115,367,040
Size571.9 MB 110.0 MB
Events in quadrant A7,298,760776,979
Events in quadrant B3,621,586804,716
Events in quadrant C3,810,034768,671
Events in quadrant D6,897,717630,012

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270690
B0157200
C0165480
D0254580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73691842.496947%
B7370600.814111%
C7370901.221167%
D737097513.229308%

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 7369 7369 9 9 0.12% 0.12%
B 7370 7370 5 5 0.07% 0.07%
C 7370 7370 80 80 1.09% 1.09%
D 7370 7370 783 783 10.62% 10.62%

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 83 3632591 20727.19 835 815 175.2
A 9 191 259842 1478.31 835 815 175.2
A 13 248 73260 413.46 835 815 175.2
B 2 2 91775 551.02 833 807 165.1
B 15 201 56794 339.13 833 807 165.1
B 0 245 32602 192.59 833 807 165.1
C 12 2 328327 1677.19 820 824 195.3
C 14 254 144772 737.18 820 824 195.3
C 15 208 50069 252.19 820 824 195.3
D 2 249 1284799 6449.78 778 753 199.1
D 1 52 1242103 6235.32 778 753 199.1
D 13 249 500933 2512.41 778 753 199.1

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