ASTROSAT CZTI

Data Quality Report

Orbit 35605

Creation date: 2022-04-29T21:28:49.183482
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/AS1A10_065T04_9000005098_35605cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35605cztM0_level2_quad_clean.evt
Size (bytes)487,290,24079,963,200
Size464.7 MB 76.3 MB
Events in quadrant A2,660,997529,532
Events in quadrant B3,511,675522,376
Events in quadrant C3,725,753504,782
Events in quadrant D4,486,738480,315

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115183
B0141392
C0144962
D0170012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5489130.236837%
B54892815.119330%
C54892704.918929%
D54895059.200219%

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 7191 5490 2 2 0.03% 0.04%
B 7191 5490 162 162 2.25% 2.95%
C 7191 5490 201 201 2.80% 3.66%
D 7191 5490 445 445 6.19% 8.11%

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 145720 1126.15 640 627 128.8
A 8 144 14769 109.76 640 627 128.8
A 9 254 7885 56.33 640 627 128.8
B 5 172 951589 7917.45 622 607 120.1
B 15 85 55174 454.3 622 607 120.1
B 4 81 25076 203.72 622 607 120.1
C 0 10 731176 5150.81 608 613 141.8
C 1 23 361258 2542.71 608 613 141.8
C 15 214 224046 1575.31 608 613 141.8
D 7 80 1447373 9792.59 599 581 147.7
D 2 249 235365 1589.13 599 581 147.7
D 2 153 125360 844.56 599 581 147.7

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