ASTROSAT CZTI

Data Quality Report

Orbit 08945

Creation date: 2024-06-27T15:39:17.933458
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/AS1A03_092T01_9000001240_08945cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08945cztM0_level2_quad_clean.evt
Size (bytes)511,488,00098,262,720
Size487.8 MB 93.7 MB
Events in quadrant A3,841,016635,127
Events in quadrant B3,570,914642,269
Events in quadrant C3,253,424630,434
Events in quadrant D4,381,657612,379

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154703
B0145392
C0138252
D0170562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65372233.411351%
B65372143.273673%
C65371622.478201%
D65373635.553006%

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 9037 6537 34 34 0.38% 0.52%
B 9037 6537 8 8 0.09% 0.12%
C 9037 6537 0 0 0.00% 0.00%
D 9037 6537 137 137 1.52% 2.10%

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 358707 2069.61 860 843 172.9
A 5 16 64882 370.35 860 843 172.9
A 15 174 39626 224.29 860 843 172.9
B 12 32 134390 831.07 857 840 160.7
B 0 219 35558 216.05 857 840 160.7
B 6 51 21896 131.03 857 840 160.7
C 13 61 6330 28.97 833 838 189.6
C 12 4 2399 8.23 833 838 189.6
C 3 202 2084 6.57 833 838 189.6
D 12 233 567916 2692.04 828 805 210.7
D 8 195 278470 1318.06 828 805 210.7
D 1 52 174973 826.76 828 805 210.7

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