ASTROSAT CZTI

Data Quality Report

Orbit 45620

Creation date: 2024-06-27T23:14:17.857231
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_071T08_9000006114_45620cztM0_level2.fits modeM0/AS1A13_071T08_9000006114_45620cztM0_level2_quad_clean.evt
Size (bytes)678,971,520106,511,040
Size647.5 MB 101.6 MB
Events in quadrant A5,908,357768,513
Events in quadrant B3,881,737769,773
Events in quadrant C3,229,228756,802
Events in quadrant D11,610,048475,538

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216101
B0157371
C0141031
D0390111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65111852.841345%
B65123104.760442%
C6512701.074939%
D6512244037.469287%

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 7686 6512 13 13 0.17% 0.20%
B 7687 6512 150 150 1.95% 2.30%
C 7687 6512 26 26 0.34% 0.40%
D 7686 6512 2262 2262 29.43% 34.74%

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 2883816 18314.8 766 749 157.4
A 13 248 22800 140.08 766 749 157.4
A 0 243 20792 127.32 766 749 157.4
B 5 172 312950 2164.63 750 730 144.2
B 15 201 286228 1979.37 750 730 144.2
B 4 170 85562 588.14 750 730 144.2
C 14 254 229242 1320.3 745 749 173.1
C 0 207 65115 371.92 745 749 173.1
C 12 2 18166 100.64 745 749 173.1
D 11 241 6351174 38836.9 645 625 163.5
D 2 249 1142240 6981.57 645 625 163.5
D 8 129 755479 4616.32 645 625 163.5

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