ASTROSAT CZTI

Data Quality Report

Orbit 06175

Creation date: 2024-06-27T15:03:46.314428
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/AS1G06_139T05_9000000804_06175cztM0_level2.evt modeM0/AS1G06_139T05_9000000804_06175cztM0_level2_quad_clean.evt
Size (bytes)542,963,52084,870,720
Size517.8 MB 80.9 MB
Events in quadrant A4,423,623508,636
Events in quadrant B4,282,453516,562
Events in quadrant C3,614,953516,658
Events in quadrant D3,607,909500,575

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01582
B01582
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018350280
B017987297
C016149234
D016366200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75611752.314509%
B75534225.587184%
C75711331.756703%
D75841451.911920%

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 9323 7668 0 0 0.00% 0.00%
B 9323 7661 195 195 2.09% 2.55%
C 9323 7670 0 0 0.00% 0.00%
D 9323 7673 7 7 0.08% 0.09%

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 13 34 686842 3715.89 900 878 184.6
A 15 234 187650 1011.75 900 878 184.6
A 8 15 57407 306.22 900 878 184.6
B 3 64 753652 4283.71 898 873 175.7
B 12 111 18100 98.03 898 873 175.7
B 15 204 14736 78.89 898 873 175.7
C 12 16 152230 731.27 885 889 207.0
C 1 16 7046 29.75 885 889 207.0
C 13 61 6894 29.02 885 889 207.0
D 2 136 142704 649.66 884 856 218.3
D 5 97 28866 128.28 884 856 218.3
D 12 233 28202 125.24 884 856 218.3

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