ASTROSAT CZTI

Data Quality Report

Orbit 24619

Creation date: 2024-06-27T19:07:58.866665
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/AS1T03_189T01_9000003614_24619cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24619cztM0_level2_quad_clean.evt
Size (bytes)466,320,96069,143,040
Size444.7 MB 65.9 MB
Events in quadrant A3,375,386423,240
Events in quadrant B3,383,533426,655
Events in quadrant C3,374,899402,376
Events in quadrant D3,557,967398,544

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140442
B0140132
C0139372
D0145912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6347681.071372%
B6347761.197416%
C6347971.528281%
D6347641.008350%

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 7547 6347 0 0 0.00% 0.00%
B 7547 6347 0 0 0.00% 0.00%
C 7547 6348 3 3 0.04% 0.05%
D 7547 6347 15 15 0.20% 0.24%

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 9240 48.62 874 859 172.4
A 6 16 8854 46.38 874 859 172.4
A 3 137 7683 39.59 874 859 172.4
B 12 111 19565 115.82 857 840 161.7
B 11 111 17930 105.71 857 840 161.7
B 14 111 16819 98.83 857 840 161.7
C 14 238 131633 692.85 818 825 188.8
C 9 54 35188 182.01 818 825 188.8
C 3 233 8290 39.54 818 825 188.8
D 1 52 190928 946.8 838 816 200.8
D 8 195 110682 547.16 838 816 200.8
D 10 70 58720 288.37 838 816 200.8

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