ASTROSAT CZTI

Data Quality Report

Orbit 32784

Creation date: 2024-06-27T20:41:57.958711
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/AS1T04_064T01_9000004730_32784cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32784cztM0_level2_quad_clean.evt
Size (bytes)3,861,046,080326,448,000
Size3.6 GB 311.3 MB
Events in quadrant A22,391,4191,927,650
Events in quadrant B21,275,8722,065,093
Events in quadrant C22,163,5352,011,850
Events in quadrant D48,926,5901,645,830

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06620
B06620
C06620
D06620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0877717
B0845396
C0865246
D01681156

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3249021926.746691%
B324909472.914743%
C3249018875.807941%
D32490794324.447522%

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 43213 32496 1385 1385 3.21% 4.26%
B 43213 32497 611 611 1.41% 1.88%
C 43213 32497 1490 1490 3.45% 4.59%
D 43213 32497 7507 7507 17.37% 23.10%

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 15 237 5677092 7560.51 3759 3692 750.4
A 12 16 1249225 1659.83 3759 3692 750.4
A 7 16 223061 292.34 3759 3692 750.4
B 5 172 2633416 3615.8 3894 3814 727.3
B 0 219 1224367 1678.31 3894 3814 727.3
B 12 1 514591 702.34 3894 3814 727.3
C 0 10 5470579 6438.88 3693 3730 849.0
C 7 221 960368 1126.73 3693 3730 849.0
C 4 254 569129 665.93 3693 3730 849.0
D 8 195 19127689 21608.61 3428 3366 885.0
D 2 250 4585206 5177.03 3428 3366 885.0
D 12 227 4266539 4816.97 3428 3366 885.0

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