ASTROSAT CZTI

Data Quality Report

Orbit 30595

Creation date: 2024-06-27T20:17:26.487863
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_058T03_9000004408_30595cztM0_level2.evt modeM0/AS1A10_058T03_9000004408_30595cztM0_level2_quad_clean.evt
Size (bytes)694,134,72077,466,240
Size662.0 MB 73.9 MB
Events in quadrant A3,381,778522,834
Events in quadrant B5,461,825522,224
Events in quadrant C5,310,140335,874
Events in quadrant D6,394,176477,337

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143873
B0213242
C0202902
D0241212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6985660.944882%
B69851321.889764%
C6985382854.803150%
D69852183.120974%

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 8740 6987 0 0 0.00% 0.00%
B 8740 6987 6 6 0.07% 0.09%
C 8740 6987 25 25 0.29% 0.36%
D 8740 6987 90 90 1.03% 1.29%

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 8 192 21129 116.56 870 853 174.0
A 13 254 12219 65.34 870 853 174.0
A 3 137 8891 46.21 870 853 174.0
B 6 159 1960669 11847.18 863 842 165.4
B 0 229 44043 261.15 863 842 165.4
B 4 171 21534 125.08 863 842 165.4
C 14 254 1339786 8864.38 645 649 151.1
C 14 238 1160110 7675.02 645 649 151.1
C 0 10 181343 1196.1 645 649 151.1
D 8 195 2748913 13773.11 831 809 199.5
D 13 249 199896 997.8 831 809 199.5
D 1 52 149639 745.91 831 809 199.5

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