ASTROSAT CZTI

Data Quality Report

Orbit 31217

Creation date: 2024-06-27T20:25:09.146776
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/AS1T04_019T01_9000004516_31217cztM0_level2.evt modeM0/AS1T04_019T01_9000004516_31217cztM0_level2_quad_clean.evt
Size (bytes)587,998,08077,333,760
Size560.8 MB 73.8 MB
Events in quadrant A3,034,257486,512
Events in quadrant B4,965,940486,136
Events in quadrant C3,412,633465,522
Events in quadrant D5,964,279459,196

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129881
B0191491
C0141612
D0226411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6365570.895522%
B63661031.617970%
C63651392.183818%
D63651882.953653%

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 7210 6366 0 0 0.00% 0.00%
B 7211 6367 0 0 0.00% 0.00%
C 7210 6366 15 15 0.21% 0.24%
D 7210 6366 74 74 1.03% 1.16%

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 5 16 20955 127.97 781 766 157.8
A 13 254 10680 62.84 781 766 157.8
A 3 137 8087 46.41 781 766 157.8
B 6 159 1940975 12973.59 768 748 149.6
B 12 111 19099 122.71 768 748 149.6
B 11 111 17833 114.24 768 748 149.6
C 3 233 238092 1346.95 741 745 176.2
C 14 238 123038 694.02 741 745 176.2
C 0 10 113810 641.65 741 745 176.2
D 8 195 3122897 17584.68 747 731 177.6
D 12 79 24584 134.34 747 731 177.6
D 2 234 23018 125.52 747 731 177.6

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