ASTROSAT CZTI

Data Quality Report

Orbit 11910

Creation date: 2024-06-27T16:19:56.998450
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/AS1A04_088T05_9000001764_11910cztM0_level2.evt modeM0/AS1A04_088T05_9000001764_11910cztM0_level2_quad_clean.evt
Size (bytes)540,123,84093,395,520
Size515.1 MB 89.1 MB
Events in quadrant A3,508,830609,220
Events in quadrant B5,032,972580,282
Events in quadrant C3,058,901607,594
Events in quadrant D4,315,187576,436

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145503
B0193202
C0135012
D0173472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6519811.242522%
B65194737.255714%
C6519440.674950%
D65192333.574168%

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 7720 6520 1 1 0.01% 0.02%
B 7720 6520 345 345 4.47% 5.29%
C 7720 6520 0 0 0.00% 0.00%
D 7719 6519 133 133 1.72% 2.04%

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 8 15 160672 987.93 805 788 161.8
A 1 162 91916 563.08 805 788 161.8
A 1 178 47361 287.78 805 788 161.8
B 4 239 1189585 8051.12 784 764 147.7
B 5 8 273579 1847.6 784 764 147.7
B 15 204 229303 1547.75 784 764 147.7
C 13 61 5657 27.08 783 788 179.8
C 12 4 3496 15.06 783 788 179.8
C 14 234 2941 11.97 783 788 179.8
D 1 52 431449 2356.38 777 758 182.8
D 13 249 226908 1237.3 777 758 182.8
D 10 199 197487 1076.33 777 758 182.8

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter