ASTROSAT CZTI

Data Quality Report

Orbit 16737

Creation date: 2024-06-27T17:27:01.604515
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_202T01_9000002484_16737cztM0_level2.evt modeM0/AS1A05_202T01_9000002484_16737cztM0_level2_quad_clean.evt
Size (bytes)664,948,800133,496,640
Size634.1 MB 127.3 MB
Events in quadrant A5,750,140852,333
Events in quadrant B4,091,505917,202
Events in quadrant C3,781,004876,352
Events in quadrant D5,980,674848,126

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227593
B0174872
C0165182
D0232232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A789288911.264572%
B78921461.849975%
C78921291.634567%
D78923103.928028%

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 8438 7895 496 496 5.88% 6.28%
B 8438 7895 33 33 0.39% 0.42%
C 8438 7895 13 13 0.15% 0.16%
D 8438 7895 181 181 2.15% 2.29%

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 15 174 2244424 12645.53 878 859 177.4
A 0 23 112414 628.76 878 859 177.4
A 0 226 13958 73.83 878 859 177.4
B 10 16 200511 1130.97 930 905 176.5
B 15 35 86154 483.02 930 905 176.5
B 7 220 47387 263.37 930 905 176.5
C 14 238 138588 669.22 884 886 205.8
C 0 207 117424 566.37 884 886 205.8
C 3 233 58201 278.55 884 886 205.8
D 1 52 1651810 7650.9 886 860 215.8
D 2 16 458058 2118.76 886 860 215.8
D 10 70 237524 1096.76 886 860 215.8

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