ASTROSAT CZTI

Data Quality Report

Orbit 18978

Creation date: 2024-06-27T17:57:25.620805
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_166T04_9000002826_18978cztM0_level2.evt modeM0/AS1A05_166T04_9000002826_18978cztM0_level2_quad_clean.evt
Size (bytes)502,041,60076,282,560
Size478.8 MB 72.7 MB
Events in quadrant A2,896,945483,461
Events in quadrant B3,262,793493,005
Events in quadrant C3,078,378477,788
Events in quadrant D5,573,494450,935

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119971
B0131451
C0124941
D0205633

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57881151.986869%
B57891512.608395%
C57891442.487476%
D578861810.677263%

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 6783 5789 5 5 0.07% 0.09%
B 6784 5790 16 16 0.24% 0.28%
C 6784 5790 13 13 0.19% 0.22%
D 6783 5789 345 345 5.09% 5.96%

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 4 2 30582 200.07 742 727 149.2
A 0 226 6431 38.22 742 727 149.2
A 11 29 6228 36.86 742 727 149.2
B 3 112 276088 1971.28 733 716 139.7
B 7 220 36293 254.68 733 716 139.7
B 0 197 26845 187.05 733 716 139.7
C 0 207 160099 951.43 713 719 167.5
C 14 238 109339 648.41 713 719 167.5
C 7 220 17029 97.36 713 719 167.5
D 7 238 2533736 14529.48 709 689 174.3
D 1 52 147121 839.93 709 689 174.3
D 12 218 87091 495.6 709 689 174.3

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