ASTROSAT CZTI

Data Quality Report

Orbit 35149

Creation date: 2022-03-30T01:43:18.078879
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/AS1A11_065T05_9000005032_35149cztM0_level2.evt modeM0/AS1A11_065T05_9000005032_35149cztM0_level2_quad_clean.evt
Size (bytes)128,537,28021,024,000
Size122.6 MB 20.1 MB
Events in quadrant A855,517141,984
Events in quadrant B1,037,247140,980
Events in quadrant C769,508139,973
Events in quadrant D1,154,695130,826

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032041
B037801
C029251
D042321

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108119117.668825%
B108118917.483811%
C1081797.308048%
D108113612.580944%

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 1081 1081 88 88 8.14% 8.14%
B 1081 1081 109 109 10.08% 10.08%
C 1081 1081 52 52 4.81% 4.81%
D 1081 1081 96 96 8.88% 8.88%

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 15 169 320519 11369.76 129 126 28.2
A 10 83 32976 1165.75 129 126 28.2
A 13 6 2314 77.65 129 126 28.2
B 5 236 488371 18770.3 124 121 26.0
B 4 232 45462 1743.09 124 121 26.0
B 5 172 12995 494.93 124 121 26.0
C 0 10 229723 7325.22 126 126 31.3
C 15 214 47125 1499.49 126 126 31.3
C 13 61 872 23.8 126 126 31.3
D 13 249 301106 9183.08 126 123 32.8
D 8 195 218326 6657.44 126 123 32.8
D 7 80 63406 1930.78 126 123 32.8

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