ASTROSAT CZTI

Data Quality Report

Orbit 45806

Creation date: 2024-06-27T23:16:22.785270
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_088T01_9000006126_45806cztM0_level2.fits modeM0/AS1T05_088T01_9000006126_45806cztM0_level2_quad_clean.evt
Size (bytes)766,609,920103,608,000
Size731.1 MB 98.8 MB
Events in quadrant A6,347,760729,634
Events in quadrant B6,076,283748,489
Events in quadrant C3,656,602759,198
Events in quadrant D11,798,287449,250

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230802
B0225412
C0152252
D0395472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64583385.233819%
B64585378.315268%
C6458951.471044%
D6458273442.335088%

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 7608 6459 193 193 2.54% 2.99%
B 7608 6459 272 272 3.58% 4.21%
C 7608 6459 48 48 0.63% 0.74%
D 7608 6459 2678 2678 35.20% 41.46%

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 2898642 18968.59 740 724 152.8
A 15 14 523181 3419.79 740 724 152.8
A 13 248 33585 215.09 740 724 152.8
B 3 112 2366670 16875.45 734 712 140.2
B 0 171 254006 1806.65 734 712 140.2
B 5 172 225372 1602.41 734 712 140.2
C 12 2 642771 3645.75 752 758 176.1
C 2 14 37117 206.47 752 758 176.1
C 12 250 18867 102.83 752 758 176.1
D 11 241 7064706 43173.04 648 630 163.6
D 1 52 1431925 8747.55 648 630 163.6
D 1 47 207714 1265.62 648 630 163.6

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