ASTROSAT CZTI

Data Quality Report

Orbit 44674

Creation date: 2024-06-27T23:05:09.543982
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/AS1A13_072T01_9000006008_44674cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44674cztM0_level2_quad_clean.evt
Size (bytes)441,092,160108,624,960
Size420.7 MB 103.6 MB
Events in quadrant A4,995,137721,536
Events in quadrant B3,566,585743,273
Events in quadrant C3,015,444715,889
Events in quadrant D4,237,781648,196

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202664
B0152322
C0137142
D0173742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66011642.484472%
B66011602.423875%
C6601450.681715%
D66011782.696561%

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 7651 6602 17 17 0.22% 0.26%
B 7651 6602 68 68 0.89% 1.03%
C 7651 6602 7 7 0.09% 0.11%
D 7651 6602 99 99 1.29% 1.50%

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 10 83 2031241 13228.58 741 724 153.5
A 13 248 67049 432.1 741 724 153.5
A 15 223 18018 112.67 741 724 153.5
B 0 189 226894 1556.79 739 716 145.3
B 0 183 115980 793.37 739 716 145.3
B 0 186 85091 580.75 739 716 145.3
C 3 233 69096 397.78 735 738 171.8
C 14 254 61643 354.41 735 738 171.8
C 2 14 5443 27.38 735 738 171.8
D 1 52 694339 3801.97 727 704 182.4
D 13 249 298952 1634.76 727 704 182.4
D 2 249 110240 600.39 727 704 182.4

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