ASTROSAT CZTI

Data Quality Report

Orbit 46982

Creation date: 2024-06-27T23:30:16.528131
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_9000006292_46982cztM0_level2.fits modeM0/AS1A13_071T08_9000006292_46982cztM0_level2_quad_clean.evt
Size (bytes)767,453,760102,643,200
Size731.9 MB 97.9 MB
Events in quadrant A6,662,238756,436
Events in quadrant B11,424,428506,752
Events in quadrant C3,312,474758,713
Events in quadrant D6,499,861626,260

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247154
B03854718
C0144184
D0238121

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65882644.007286%
B6588310247.085610%
C65891402.124753%
D659190613.746017%

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 7760 6591 7 7 0.09% 0.11%
B 7759 6590 2349 2349 30.27% 35.64%
C 7761 6591 54 54 0.70% 0.82%
D 7761 6592 755 755 9.73% 11.45%

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 3626293 22831.26 770 755 158.8
A 0 243 16543 99.42 770 755 158.8
A 7 3 14485 86.46 770 755 158.8
B 3 112 7380452 56800.62 670 650 129.9
B 15 201 1233509 9489.03 670 650 129.9
B 4 171 120903 925.56 670 650 129.9
C 14 254 184862 1052.88 757 759 174.9
C 12 2 161036 916.62 757 759 174.9
C 11 16 7896 40.82 757 759 174.9
D 13 249 1903593 10562.24 722 699 180.2
D 1 52 1633573 9063.46 722 699 180.2
D 2 249 121490 670.46 722 699 180.2

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