ASTROSAT CZTI

Data Quality Report

Orbit 10281

Creation date: 2024-06-27T15:57:22.570620
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/AS1C02_021T01_9000001482_10281cztM0_level2.evt modeM0/AS1C02_021T01_9000001482_10281cztM0_level2_quad_clean.evt
Size (bytes)1,144,823,040248,497,920
Size1.1 GB 237.0 MB
Events in quadrant A7,951,6051,607,851
Events in quadrant B8,411,0221,583,074
Events in quadrant C7,270,7171,602,616
Events in quadrant D9,905,7741,580,271

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151
B0162
C0162
D0162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0518166
B0518165
C0518171
D0509154

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05466019339
B05797322075
C05272318628
D06438323829

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A165551260.761099%
B163831661.013245%
C16722660.394690%
D171362101.225490%

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 19370 17714 14 14 0.07% 0.08%
B 19370 17561 33 33 0.17% 0.19%
C 19370 17778 0 0 0.00% 0.00%
D 19370 17646 106 106 0.55% 0.60%

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 8 5 487823 1289.94 1880 1837 376.8
A 8 15 130333 341.06 1880 1837 376.8
A 15 174 77099 199.77 1880 1837 376.8
B 11 51 385715 1105.17 1861 1816 347.4
B 4 239 320739 918.11 1861 1816 347.4
B 0 85 99728 281.87 1861 1816 347.4
C 13 61 14013 28.43 1857 1862 427.4
C 9 68 10953 21.27 1857 1862 427.4
C 14 67 10763 20.83 1857 1862 427.4
D 8 195 938525 2072.01 1898 1845 452.1
D 12 233 458443 1010.03 1898 1845 452.1
D 1 52 335345 737.73 1898 1845 452.1

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