ASTROSAT CZTI

Data Quality Report

Orbit 40863

Creation date: 2024-06-27T22:21:28.912325
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_097T01_9000005574_40863cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40863cztM0_level2_quad_clean.evt
Size (bytes)355,582,08086,538,240
Size339.1 MB 82.5 MB
Events in quadrant A2,837,986582,377
Events in quadrant B3,336,001578,872
Events in quadrant C2,681,755572,044
Events in quadrant D3,893,771515,137

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117783
B0136562
C0113842
D0152372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5303160.301716%
B53032735.148029%
C5303390.735433%
D53031763.318876%

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 7066 5304 4 4 0.06% 0.08%
B 7066 5304 186 186 2.63% 3.51%
C 7066 5304 29 29 0.41% 0.55%
D 7066 5304 149 149 2.11% 2.81%

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 504063 4248.34 576 562 118.5
A 13 248 41776 347.75 576 562 118.5
A 2 79 27884 230.53 576 562 118.5
B 4 171 1013677 9335.93 562 545 108.5
B 5 255 36803 334.11 562 545 108.5
B 0 229 34452 312.45 562 545 108.5
C 15 214 222125 1672.02 566 568 132.5
C 14 254 139544 1048.81 566 568 132.5
C 0 10 66938 500.87 566 568 132.5
D 12 79 894565 6519.71 555 539 137.1
D 13 249 290120 2111.78 555 539 137.1
D 2 249 204461 1487.11 555 539 137.1

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