ASTROSAT CZTI

Data Quality Report

Orbit 43838

Creation date: 2024-06-27T22:56:24.568473
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_018T01_9000005906_43838cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43838cztM0_level2_quad_clean.evt
Size (bytes)618,111,360101,502,720
Size589.5 MB 96.8 MB
Events in quadrant A4,548,621711,630
Events in quadrant B3,611,333734,481
Events in quadrant C6,073,846680,185
Events in quadrant D8,162,373510,645

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184216
B0146871
C0225393
D0284714

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62501973.152000%
B62531872.990565%
C62525578.909149%
D6252166026.551504%

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 7232 6252 19 19 0.26% 0.30%
B 7233 6253 47 47 0.65% 0.75%
C 7233 6253 368 368 5.09% 5.89%
D 7232 6252 1579 1579 21.83% 25.26%

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 929770 6103.18 740 726 152.2
A 15 223 642052 4213.07 740 726 152.2
A 13 248 38267 246.62 740 726 152.2
B 0 200 199276 1363.7 736 714 145.6
B 4 170 160610 1098.15 736 714 145.6
B 5 235 119260 814.16 736 714 145.6
C 3 233 3224093 19433.1 708 712 165.9
C 15 158 32160 189.59 708 712 165.9
C 15 157 27025 158.64 708 712 165.9
D 12 33 3885616 22666.39 662 641 171.4
D 5 235 513704 2993.4 662 641 171.4
D 1 52 255034 1484.22 662 641 171.4

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