ASTROSAT CZTI

Data Quality Report

Orbit 03870

Creation date: 2024-06-27T14:34:37.169693
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/AS1G05_083T01_9000000494_03870cztM0_level2.evt modeM0/AS1G05_083T01_9000000494_03870cztM0_level2_quad_clean.evt
Size (bytes)416,315,52053,798,400
Size397.0 MB 51.3 MB
Events in quadrant A4,053,410296,473
Events in quadrant B2,288,368347,005
Events in quadrant C3,158,475335,657
Events in quadrant D2,801,179332,068

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175182052
B0112001226
C0135511097
D0127521084

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011
B111
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09810
B010010
C09810
D09911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A448894521.056150%
B4520210.464602%
C45231773.913332%
D45251593.513812%

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 6438 4519 921 921 14.31% 20.38%
B 6433 4567 13 13 0.20% 0.28%
C 6433 4568 182 182 2.83% 3.98%
D 6445 4582 189 189 2.93% 4.12%

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 0 199 1571236 18266.89 407 395 86.0
A 15 234 586798 6819.12 407 395 86.0
A 0 226 158063 1833.48 407 395 86.0
B 4 48 179568 1941.25 477 465 92.3
B 15 204 136674 1476.34 477 465 92.3
B 5 200 32849 351.0 477 465 92.3
C 2 53 1100328 10322.38 453 455 106.6
C 1 16 275245 2578.92 453 455 106.6
C 10 65 4875 41.48 453 455 106.6
D 14 34 729075 6516.16 456 442 111.8
D 1 20 91580 815.05 456 442 111.8
D 2 32 89109 792.95 456 442 111.8

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
Veto Counter