ASTROSAT CZTI

Data Quality Report

Orbit 19268

Creation date: 2024-06-27T18:00:52.554634
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/AS1A05_107T01_9000002852_19268cztM0_level2.evt modeM0/AS1A05_107T01_9000002852_19268cztM0_level2_quad_clean.evt
Size (bytes)393,045,12076,930,560
Size374.8 MB 73.4 MB
Events in quadrant A2,563,327485,461
Events in quadrant B2,738,235498,792
Events in quadrant C2,690,924493,698
Events in quadrant D3,536,536466,692

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113361
B0117451
C0115022
D0144521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5500240.436364%
B5500781.418182%
C5499771.400255%
D54993526.401164%

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 6335 5501 0 0 0.00% 0.00%
B 6335 5501 13 13 0.21% 0.24%
C 6334 5500 1 1 0.02% 0.02%
D 6334 5500 247 247 3.90% 4.49%

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 13 254 8585 58.82 664 649 134.9
A 0 226 5852 38.56 664 649 134.9
A 3 137 5365 34.95 664 649 134.9
B 10 244 51503 403.15 665 648 126.1
B 0 230 39235 305.89 665 648 126.1
B 12 111 15537 118.03 665 648 126.1
C 14 238 100971 660.28 648 655 151.9
C 3 233 30527 196.62 648 655 151.9
C 9 54 24788 158.84 648 655 151.9
D 7 238 904425 5940.91 629 612 152.1
D 1 52 215556 1412.86 629 612 152.1
D 2 234 21586 137.87 629 612 152.1

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