ASTROSAT CZTI

Data Quality Report

Orbit 34649

Creation date: 2022-02-24T07:49:03.761469
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/AS1T05_008T01_9000004956_34649cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34649cztM0_level2_quad_clean.evt
Size (bytes)465,687,36072,636,480
Size444.1 MB 69.3 MB
Events in quadrant A2,550,481457,758
Events in quadrant B3,442,510459,698
Events in quadrant C2,934,161458,067
Events in quadrant D4,792,568428,487

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01149525
B01392359
C01221616
D01821570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A565250.088464%
B56461302.302515%
C5661761.342519%
D56441222.161588%

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 7342 5665 1 1 0.01% 0.02%
B 7342 5663 94 94 1.28% 1.66%
C 7342 5668 60 60 0.82% 1.06%
D 7342 5663 85 85 1.16% 1.50%

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 46306 358.75 642 631 127.3
A 13 6 10462 77.22 642 631 127.3
A 13 254 10375 76.53 642 631 127.3
B 5 172 802560 6549.75 638 620 122.4
B 4 232 68046 550.69 638 620 122.4
B 0 219 21425 169.92 638 620 122.4
C 15 214 239134 1655.91 621 625 144.0
C 0 10 231827 1605.18 621 625 144.0
C 14 67 23965 162.04 621 625 144.0
D 8 195 1884868 12466.23 614 596 151.2
D 2 120 184491 1216.64 614 596 151.2
D 2 250 116375 765.98 614 596 151.2

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