ASTROSAT CZTI

Data Quality Report

Orbit 40541

Creation date: 2024-06-27T22:17:19.365824
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/AS1A12_006T09_9000005546_40541cztM0_level2.fits modeM0/AS1A12_006T09_9000005546_40541cztM0_level2_quad_clean.evt
Size (bytes)392,080,32090,207,360
Size373.9 MB 86.0 MB
Events in quadrant A3,168,962630,293
Events in quadrant B3,329,943640,642
Events in quadrant C2,950,963607,592
Events in quadrant D4,613,036448,630

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129432
B0137992
C0126532
D0176132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5779140.242256%
B5779841.453539%
C5779350.605641%
D5779135823.498875%

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 7061 5780 6 6 0.08% 0.10%
B 7061 5780 44 44 0.62% 0.76%
C 7061 5780 18 18 0.25% 0.31%
D 7061 5780 436 436 6.17% 7.54%

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 534620 4032.22 634 621 132.4
A 12 189 144389 1085.59 634 621 132.4
A 3 1 24743 182.14 634 621 132.4
B 7 202 660730 5354.77 628 609 123.3
B 3 112 83404 671.62 628 609 123.3
B 0 156 30116 239.35 628 609 123.3
C 15 214 252012 1731.78 614 618 145.2
C 14 254 193594 1329.35 614 618 145.2
C 10 20 84062 574.82 614 618 145.2
D 2 250 1375154 9962.78 548 532 138.0
D 12 227 552672 4001.72 548 532 138.0
D 12 6 216379 1564.38 548 532 138.0

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