ASTROSAT CZTI

Data Quality Report

Orbit 19335

Creation date: 2024-06-27T18:01:32.067475
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_19335cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19335cztM0_level2_quad_clean.evt
Size (bytes)496,428,48088,646,400
Size473.4 MB 84.5 MB
Events in quadrant A3,473,139572,022
Events in quadrant B3,556,374572,680
Events in quadrant C3,401,382543,995
Events in quadrant D4,155,831535,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145713
B0146512
C0141152
D0167062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66011041.575519%
B66011121.696713%
C66011201.817906%
D66011792.711710%

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 7736 6601 21 21 0.27% 0.32%
B 7736 6601 22 22 0.28% 0.33%
C 7736 6601 0 0 0.00% 0.00%
D 7736 6601 83 83 1.07% 1.26%

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 5 16 85527 485.02 872 855 174.6
A 9 143 14795 79.85 872 855 174.6
A 11 29 11890 63.21 872 855 174.6
B 3 64 97164 594.92 856 836 161.9
B 0 190 55295 336.34 856 836 161.9
B 0 229 43505 263.52 856 836 161.9
C 14 238 131799 691.38 818 824 189.4
C 3 233 76996 402.09 818 824 189.4
C 13 61 5728 25.89 818 824 189.4
D 1 52 459981 2283.6 833 810 201.1
D 10 66 243418 1206.57 833 810 201.1
D 11 176 236839 1173.85 833 810 201.1

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