ASTROSAT CZTI

Data Quality Report

Orbit 28503

Creation date: 2024-06-27T19:52:26.276180
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/AS1A10_110T05_9000004098_28503cztM0_level2.evt modeM0/AS1A10_110T05_9000004098_28503cztM0_level2_quad_clean.evt
Size (bytes)678,389,760121,224,960
Size647.0 MB 115.6 MB
Events in quadrant A3,268,664838,004
Events in quadrant B3,276,128859,993
Events in quadrant C4,023,093824,240
Events in quadrant D9,544,494702,077

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138423
B0138642
C0160882
D0328122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63951101.720094%
B63961041.626016%
C63963215.018762%
D6396227735.600375%

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 7505 6395 6 6 0.08% 0.09%
B 7506 6396 0 0 0.00% 0.00%
C 7506 6396 126 126 1.68% 1.97%
D 7506 6396 2072 2072 27.60% 32.40%

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 15 174 97511 603.56 816 800 160.2
A 13 254 12139 70.76 816 800 160.2
A 8 192 10983 63.55 816 800 160.2
B 0 230 42630 276.19 818 798 151.5
B 12 111 18142 114.51 818 798 151.5
B 11 111 16115 101.13 818 798 151.5
C 4 254 738819 4041.47 799 806 182.6
C 14 238 129828 706.54 799 806 182.6
C 3 233 22604 119.37 799 806 182.6
D 8 195 3619976 21651.32 716 697 167.2
D 1 52 2968787 17755.76 716 697 167.2
D 2 250 93758 556.71 716 697 167.2

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