ASTROSAT CZTI

Data Quality Report

Orbit 44774

Creation date: 2024-06-27T23:06:22.188922
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_004T12_9000006020_44774cztM0_level2.fits modeM0/AS1A13_004T12_9000006020_44774cztM0_level2_quad_clean.evt
Size (bytes)509,993,28093,355,200
Size486.4 MB 89.0 MB
Events in quadrant A6,760,589565,874
Events in quadrant B4,239,907627,464
Events in quadrant C2,751,354636,764
Events in quadrant D4,659,493576,124

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246851
B0166181
C0126551
D0179231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A601898616.384181%
B60184567.577268%
C6018530.880691%
D60192584.286426%

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 7023 6018 740 740 10.54% 12.30%
B 7023 6018 337 337 4.80% 5.60%
C 7023 6019 19 19 0.27% 0.32%
D 7024 6020 221 221 3.15% 3.67%

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 15 223 2463055 19235.52 619 605 128.0
A 10 83 1754699 13702.17 619 605 128.0
A 13 248 107115 832.01 619 605 128.0
B 0 189 1012510 8015.89 634 615 126.2
B 4 171 379397 3000.58 634 615 126.2
B 5 255 142977 1127.74 634 615 126.2
C 14 254 169736 1116.42 646 648 151.5
C 12 249 32322 209.13 646 648 151.5
C 0 207 10247 63.38 646 648 151.5
D 13 249 448865 2780.89 642 622 161.2
D 11 241 410984 2545.88 642 622 161.2
D 13 174 358422 2219.79 642 622 161.2

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