ASTROSAT CZTI

Data Quality Report

Orbit 27722

Creation date: 2024-06-27T19:43:32.135159
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/AS1T03_263T01_9000003990_27722cztM0_level2.evt modeM0/AS1T03_263T01_9000003990_27722cztM0_level2_quad_clean.evt
Size (bytes)521,308,800109,126,080
Size497.2 MB 104.1 MB
Events in quadrant A3,807,895730,316
Events in quadrant B3,518,773745,535
Events in quadrant C3,833,249711,750
Events in quadrant D4,189,455666,428

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153070
B0143070
C0154750
D0168070

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64611412.182325%
B64621512.336738%
C64621682.599814%
D64622463.806871%

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 7276 6461 40 40 0.55% 0.62%
B 7277 6462 16 16 0.22% 0.25%
C 7277 6462 2 2 0.03% 0.03%
D 7277 6462 173 173 2.38% 2.68%

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 6 16 331965 1841.06 850 836 179.9
A 0 13 201934 1118.09 850 836 179.9
A 13 254 10926 56.1 850 836 179.9
B 3 64 144969 849.3 846 829 169.7
B 15 32 24234 137.91 846 829 169.7
B 4 200 21642 122.63 846 829 169.7
C 3 233 450748 2233.4 814 824 201.5
C 14 238 132266 652.47 814 824 201.5
C 0 207 73969 363.09 814 824 201.5
D 1 52 1009621 5066.54 801 782 199.1
D 11 176 109481 545.9 801 782 199.1
D 2 250 27493 134.15 801 782 199.1

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