ASTROSAT CZTI

Data Quality Report

Orbit 20655

Creation date: 2024-06-27T18:17:54.446673
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_082T09_9000003054_20655cztM0_level2.evt modeM0/AS1A05_082T09_9000003054_20655cztM0_level2_quad_clean.evt
Size (bytes)498,458,880109,537,920
Size475.4 MB 104.5 MB
Events in quadrant A3,243,640744,525
Events in quadrant B3,673,423736,242
Events in quadrant C3,513,311697,192
Events in quadrant D4,224,227685,818

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136911
B0150061
C0144301
D0168431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6504650.999385%
B6505961.475788%
C65051121.721752%
D65051652.536510%

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 7799 6505 0 0 0.00% 0.00%
B 7800 6506 17 17 0.22% 0.26%
C 7800 6506 16 16 0.21% 0.25%
D 7800 6506 80 80 1.03% 1.23%

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 0 226 7611 40.09 843 829 169.1
A 12 194 6356 32.68 843 829 169.1
A 3 137 5882 29.87 843 829 169.1
B 0 228 120651 766.91 833 815 156.3
B 0 190 94188 597.55 833 815 156.3
B 7 220 84551 535.88 833 815 156.3
C 0 207 138580 744.91 798 805 185.0
C 14 238 125718 675.37 798 805 185.0
C 9 54 47002 249.77 798 805 185.0
D 1 52 329723 1660.57 814 794 198.1
D 1 239 281588 1417.57 814 794 198.1
D 13 153 156651 786.83 814 794 198.1

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