ASTROSAT CZTI

Data Quality Report

Orbit 30777

Creation date: 2024-06-27T20:19:30.087932
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/AS1A10_071T12_9000004446_30777cztM0_level2.evt modeM0/AS1A10_071T12_9000004446_30777cztM0_level2_quad_clean.evt
Size (bytes)726,192,00092,041,920
Size692.6 MB 87.8 MB
Events in quadrant A4,672,275584,321
Events in quadrant B5,697,965596,715
Events in quadrant C4,506,696564,147
Events in quadrant D6,629,734540,757

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182962
B0220842
C0177942
D0244512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72044836.704609%
B72053484.829979%
C72054856.731437%
D72045828.078845%

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 8929 7204 232 232 2.60% 3.22%
B 8930 7205 2 2 0.02% 0.03%
C 8930 7205 90 90 1.01% 1.25%
D 8929 7204 445 445 4.98% 6.18%

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 13 1050073 5580.64 939 922 188.0
A 13 254 12911 63.77 939 922 188.0
A 3 137 9280 44.46 939 922 188.0
B 6 159 1979605 11004.33 928 902 179.8
B 12 111 22168 118.27 928 902 179.8
B 5 172 21056 112.08 928 902 179.8
C 0 10 716416 3441.67 882 887 207.9
C 3 233 178538 854.49 882 887 207.9
C 14 238 139906 668.67 882 887 207.9
D 8 195 1916974 8122.53 893 877 235.9
D 10 253 642489 2719.86 893 877 235.9
D 13 249 507826 2149.01 893 877 235.9

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