ASTROSAT CZTI

Data Quality Report

Orbit 31902

Creation date: 2024-06-27T20:34:00.892164
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/AS1A10_123T09_9000004654_31902cztM0_level2.evt modeM0/AS1A10_123T09_9000004654_31902cztM0_level2_quad_clean.evt
Size (bytes)719,530,560120,530,880
Size686.2 MB 114.9 MB
Events in quadrant A3,485,021865,053
Events in quadrant B5,677,640833,290
Events in quadrant C5,730,923758,513
Events in quadrant D6,471,642752,509

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143609
B02108110
C0216043
D0238212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63121171.853612%
B63113896.163841%
C631485713.573012%
D631487313.826417%

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 7579 6314 0 0 0.00% 0.00%
B 7579 6314 178 178 2.35% 2.82%
C 7579 6315 378 378 4.99% 5.99%
D 7579 6315 835 835 11.02% 13.22%

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 13 254 10820 56.05 900 886 177.2
A 3 137 7980 40.02 900 886 177.2
A 0 226 7853 39.31 900 886 177.2
B 6 159 1648841 10253.78 862 844 160.7
B 5 172 383211 2379.07 862 844 160.7
B 10 245 104025 641.99 862 844 160.7
C 3 233 1671106 9220.77 790 795 181.1
C 0 10 767954 4235.02 790 795 181.1
C 14 238 148900 817.6 790 795 181.1
D 12 218 1731733 8789.91 834 814 196.9
D 8 195 1285792 6525.34 834 814 196.9
D 12 233 94131 473.88 834 814 196.9

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