ASTROSAT CZTI

Data Quality Report

Orbit 03838

Creation date: 2024-06-27T14:34:12.618047
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_189T01_9000000492_03838cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03838cztM0_level2_quad_clean.evt
Size (bytes)651,127,68059,376,960
Size621.0 MB 56.6 MB
Events in quadrant A4,873,905348,941
Events in quadrant B3,319,775356,539
Events in quadrant C7,679,537293,040
Events in quadrant D3,398,205337,332

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189162
B0139601
C0272991
D0148731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66196249.427406%
B66191492.251095%
C6619184227.828977%
D66191922.900740%

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 7349 6619 421 421 5.73% 6.36%
B 7349 6619 0 0 0.00% 0.00%
C 7349 6619 1714 1714 23.32% 25.90%
D 7349 6619 71 71 0.97% 1.07%

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 15 234 1852600 11722.3 769 753 158.0
A 0 50 27167 167.2 769 753 158.0
A 13 251 22884 140.09 769 753 158.0
B 15 204 161746 1018.23 803 786 158.1
B 14 167 25360 155.45 803 786 158.1
B 4 81 16053 96.58 803 786 158.1
C 1 241 4873483 31791.83 649 652 153.3
C 14 234 141142 916.6 649 652 153.3
C 2 53 92050 596.31 649 652 153.3
D 13 248 265570 1413.42 765 745 187.4
D 13 223 115523 612.59 765 745 187.4
D 2 14 51733 272.13 765 745 187.4

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