ASTROSAT CZTI

Data Quality Report

Orbit 16791

Creation date: 2024-06-27T17:28:00.469602
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_004T07_9000002492_16791cztM0_level2.evt modeM0/AS1A05_004T07_9000002492_16791cztM0_level2_quad_clean.evt
Size (bytes)692,173,440106,102,080
Size660.1 MB 101.2 MB
Events in quadrant A6,534,035687,844
Events in quadrant B3,847,198733,179
Events in quadrant C4,268,966692,392
Events in quadrant D5,873,868646,610

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239132
B0154951
C0169301
D0217191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A649592514.241724%
B64951552.386451%
C64952193.371824%
D649588413.610470%

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 7766 6497 723 723 9.31% 11.13%
B 7766 6497 14 14 0.18% 0.22%
C 7766 6497 11 11 0.14% 0.17%
D 7765 6496 627 627 8.07% 9.65%

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 10 234 2920479 17366.04 844 829 168.1
A 15 174 335739 1992.04 844 829 168.1
A 9 143 37276 216.79 844 829 168.1
B 15 35 349926 2185.59 853 835 159.7
B 0 229 71454 442.13 853 835 159.7
B 3 209 26786 162.47 853 835 159.7
C 3 233 838443 4487.05 813 817 186.7
C 14 238 127236 677.21 813 817 186.7
C 0 207 101730 540.57 813 817 186.7
D 1 52 2373799 12198.08 804 781 194.5
D 10 70 188445 964.65 804 781 194.5
D 12 218 184025 941.93 804 781 194.5

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