ASTROSAT CZTI

Data Quality Report

Orbit 45632

Creation date: 2024-06-27T23:14:24.041776
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_071T08_9000006114_45632cztM0_level2.fits modeM0/AS1A13_071T08_9000006114_45632cztM0_level2_quad_clean.evt
Size (bytes)1,063,932,480207,057,600
Size1014.6 MB 197.5 MB
Events in quadrant A11,388,7841,430,858
Events in quadrant B10,066,3391,308,738
Events in quadrant C5,865,0681,435,255
Events in quadrant D11,077,5051,213,200

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0415453
B0382663
C0264763
D0416893

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127554123.230106%
B12754169013.250745%
C127541311.027129%
D1275511128.718150%

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 15910 12756 30 30 0.19% 0.24%
B 15909 12756 1146 1146 7.20% 8.98%
C 15909 12756 6 6 0.04% 0.05%
D 15910 12757 800 800 5.03% 6.27%

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 5534282 18144.84 1479 1445 304.9
A 13 248 52031 165.9 1479 1445 304.9
A 10 255 38602 121.86 1479 1445 304.9
B 3 112 2037971 7642.41 1381 1338 266.5
B 12 18 1271657 4766.84 1381 1338 266.5
B 5 172 884985 3315.86 1381 1338 266.5
C 14 254 125765 364.94 1456 1465 340.6
C 2 14 46800 133.1 1456 1465 340.6
C 0 64 11746 30.18 1456 1465 340.6
D 13 249 1713359 4804.37 1424 1380 356.3
D 11 241 1613977 4525.47 1424 1380 356.3
D 1 52 709515 1987.26 1424 1380 356.3

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