ASTROSAT CZTI

Data Quality Report

Orbit 40963

Creation date: 2024-06-27T22:22:45.549387
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/AS1A12_052T04_9000005582_40963cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40963cztM0_level2_quad_clean.evt
Size (bytes)317,992,32093,553,920
Size303.3 MB 89.2 MB
Events in quadrant A3,029,177625,089
Events in quadrant B2,448,044636,978
Events in quadrant C2,724,670612,593
Events in quadrant D3,126,669561,029

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123973
B0113792
C0117642
D0133742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5676120.211416%
B567630.052854%
C5676180.317125%
D56761192.096547%

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 7380 5677 2 2 0.03% 0.04%
B 7380 5677 0 0 0.00% 0.00%
C 7380 5677 18 18 0.24% 0.32%
D 7380 5677 99 99 1.34% 1.74%

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 518157 4024.3 626 611 128.6
A 12 189 71140 548.41 626 611 128.6
A 2 79 15669 117.09 626 611 128.6
B 12 111 15188 122.56 617 599 119.0
B 11 111 14268 114.83 617 599 119.0
B 14 111 13792 110.83 617 599 119.0
C 15 214 248102 1731.88 606 609 142.9
C 0 10 94890 659.75 606 609 142.9
C 12 249 15861 106.73 606 609 142.9
D 13 249 327483 2229.15 606 588 146.6
D 2 249 209900 1427.33 606 588 146.6
D 12 217 92440 626.35 606 588 146.6

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