ASTROSAT CZTI

Data Quality Report

Orbit 21869

Creation date: 2024-06-27T18:33:14.791063
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/AS1A07_118T01_9000003232_21869cztM0_level2.evt modeM0/AS1A07_118T01_9000003232_21869cztM0_level2_quad_clean.evt
Size (bytes)472,999,680106,110,720
Size451.1 MB 101.2 MB
Events in quadrant A3,474,041704,445
Events in quadrant B3,511,629714,433
Events in quadrant C3,307,886679,520
Events in quadrant D3,589,513661,358

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145422
B0146852
C0139742
D0149842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6508741.137062%
B6508771.183159%
C6508991.521205%
D6508711.090965%

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 7749 6508 4 4 0.05% 0.06%
B 7749 6508 10 10 0.13% 0.15%
C 7749 6508 0 0 0.00% 0.00%
D 7749 6508 17 17 0.22% 0.26%

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 6 16 84260 480.36 863 847 173.6
A 4 2 33838 189.99 863 847 173.6
A 5 16 26283 146.48 863 847 173.6
B 3 64 63644 392.44 857 839 160.0
B 0 190 35176 214.55 857 839 160.0
B 0 230 26215 158.56 857 839 160.0
C 14 238 129184 677.35 815 820 189.5
C 13 61 5570 25.06 815 820 189.5
C 4 191 2295 7.78 815 820 189.5
D 2 136 143707 712.6 829 806 200.5
D 1 52 139538 691.81 829 806 200.5
D 13 172 49279 241.72 829 806 200.5

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