ASTROSAT CZTI

Data Quality Report

Orbit 45519

Creation date: 2024-06-27T23:13:04.865683
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/AS1A13_031T01_9000006102_45519cztM0_level2.fits modeM0/AS1A13_031T01_9000006102_45519cztM0_level2_quad_clean.evt
Size (bytes)485,052,480108,673,920
Size462.6 MB 103.6 MB
Events in quadrant A5,509,202729,267
Events in quadrant B3,254,382762,802
Events in quadrant C3,034,226731,851
Events in quadrant D5,663,888623,173

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211143
B0137541
C0134391
D0211071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63601672.625786%
B6361661.037573%
C6361440.691715%
D63616369.998428%

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 7505 6361 18 18 0.24% 0.28%
B 7506 6362 20 20 0.27% 0.31%
C 7506 6362 20 20 0.27% 0.31%
D 7506 6362 521 521 6.94% 8.19%

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 2530712 16671.63 731 716 151.8
A 7 3 118698 777.45 731 716 151.8
A 13 248 22580 144.07 731 716 151.8
B 12 18 122287 841.54 737 714 144.5
B 5 172 117927 811.36 737 714 144.5
B 4 158 31815 215.29 737 714 144.5
C 14 254 132696 772.59 732 737 170.8
C 1 3 40163 230.83 732 737 170.8
C 13 61 4984 24.87 732 737 170.8
D 13 249 1010242 5716.95 703 682 176.6
D 2 249 910242 5150.67 703 682 176.6
D 1 52 787883 4457.77 703 682 176.6

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