ASTROSAT CZTI

Data Quality Report

Orbit 46882

Creation date: 2024-06-27T23:28:54.927672
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_053T01_9000006274_46882cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46882cztM0_level2_quad_clean.evt
Size (bytes)523,042,560105,845,760
Size498.8 MB 100.9 MB
Events in quadrant A6,327,934719,944
Events in quadrant B5,537,393711,642
Events in quadrant C3,621,562677,058
Events in quadrant D3,380,680652,173

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229501
B0208061
C0154261
D0145751

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63692333.658345%
B63695228.195949%
C63693074.820223%
D63701091.711146%

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 7524 6370 36 36 0.48% 0.57%
B 7524 6369 306 306 4.07% 4.80%
C 7524 6370 246 246 3.27% 3.86%
D 7525 6371 78 78 1.04% 1.22%

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 3456124 23362.59 719 704 147.9
A 9 191 59766 399.33 719 704 147.9
A 13 6 13485 86.41 719 704 147.9
B 3 112 2496126 18240.01 706 683 136.8
B 5 172 103874 754.26 706 683 136.8
B 4 171 31870 227.96 706 683 136.8
C 14 254 948704 5999.15 680 685 158.0
C 14 67 6451 36.49 680 685 158.0
C 12 249 4620 24.9 680 685 158.0
D 2 249 235730 1351.73 703 680 173.9
D 1 52 188478 1079.99 703 680 173.9
D 13 249 82372 469.79 703 680 173.9

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