ASTROSAT CZTI

Data Quality Report

Orbit 03477

Creation date: 2024-06-27T14:29:32.024440
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_211T01_9000000464_03477cztM0_level2.evt modeM0/AS1G05_211T01_9000000464_03477cztM0_level2_quad_clean.evt
Size (bytes)413,375,04058,155,840
Size394.2 MB 55.5 MB
Events in quadrant A3,273,539339,549
Events in quadrant B3,110,321345,624
Events in quadrant C3,222,671341,220
Events in quadrant D2,523,134333,944

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137193
B0130842
C0137342
D0119732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57261192.078240%
B5726961.676563%
C57261322.305274%
D5726210.366748%

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 6121 5728 64 64 1.05% 1.12%
B 6121 5728 26 26 0.42% 0.45%
C 6121 5728 99 99 1.62% 1.73%
D 6121 5728 10 10 0.16% 0.17%

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 0 118 532303 3947.87 645 630 134.7
A 0 50 119714 884.24 645 630 134.7
A 14 238 60570 445.08 645 630 134.7
B 2 249 220901 1702.52 657 640 129.4
B 15 204 190236 1465.49 657 640 129.4
B 3 0 85773 658.04 657 640 129.4
C 7 220 669539 4526.29 630 634 147.8
C 6 80 72437 485.87 630 634 147.8
C 1 192 8018 49.97 630 634 147.8
D 2 31 34098 219.98 628 608 152.2
D 13 223 26437 169.66 628 608 152.2
D 13 239 22121 141.31 628 608 152.2

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