ASTROSAT CZTI

Data Quality Report

Orbit 15260

Creation date: 2024-06-27T17:06:00.813983
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/AS1A04_207T01_9000002254_15260cztM0_level2.evt modeM0/AS1A04_207T01_9000002254_15260cztM0_level2_quad_clean.evt
Size (bytes)382,740,48068,973,120
Size365.0 MB 65.8 MB
Events in quadrant A2,642,121429,024
Events in quadrant B3,000,847430,461
Events in quadrant C2,911,984435,478
Events in quadrant D2,666,729413,435

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113932
B0123621
C0119691
D0116831

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5424200.368732%
B54241302.396755%
C5424300.553097%
D5424390.719027%

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 5780 5426 1 1 0.02% 0.02%
B 5780 5426 78 78 1.35% 1.44%
C 5780 5426 2 2 0.03% 0.04%
D 5780 5426 25 25 0.43% 0.46%

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 12 189 90048 666.8 652 637 134.1
A 9 143 17671 127.03 652 637 134.1
A 0 253 15192 108.55 652 637 134.1
B 10 16 323741 2563.42 650 635 126.0
B 4 48 43614 340.98 650 635 126.0
B 0 190 21016 161.7 650 635 126.0
C 3 233 385866 2605.72 633 636 147.8
C 4 254 52745 352.47 633 636 147.8
C 13 61 4695 27.46 633 636 147.8
D 13 172 120442 770.4 631 611 155.5
D 2 33 95748 611.64 631 611 155.5
D 2 234 20443 127.5 631 611 155.5

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