ASTROSAT CZTI

Data Quality Report

Orbit 19336

Creation date: 2024-06-27T18:01:32.857669
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_204T01_9000002856_19336cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19336cztM0_level2_quad_clean.evt
Size (bytes)638,421,120100,687,680
Size608.8 MB 96.0 MB
Events in quadrant A3,520,670694,488
Events in quadrant B3,587,868694,058
Events in quadrant C3,496,591652,632
Events in quadrant D8,290,023554,405

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147302
B0148082
C0144492
D0291972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6496771.185345%
B6496751.154557%
C64961151.770320%
D6496155623.953202%

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 7746 6496 6 6 0.08% 0.09%
B 7746 6496 2 2 0.03% 0.03%
C 7746 6496 0 0 0.00% 0.00%
D 7745 6495 1471 1471 18.99% 22.65%

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 5 16 48740 268.3 898 881 178.4
A 13 252 9817 50.1 898 881 178.4
A 0 226 7927 39.5 898 881 178.4
B 0 229 72219 435.66 879 860 163.8
B 0 190 24951 147.08 879 860 163.8
B 0 230 22079 129.55 879 860 163.8
C 14 238 134863 688.6 842 849 194.6
C 3 233 78954 401.33 842 849 194.6
C 13 61 6022 26.58 842 849 194.6
D 7 238 4316588 22247.13 798 777 194.0
D 1 52 393921 2026.58 798 777 194.0
D 10 66 294566 1514.42 798 777 194.0

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