ASTROSAT CZTI

Data Quality Report

Orbit 16722

Creation date: 2024-06-27T17:26:47.294837
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/AS1A05_059T05_9000002478_16722cztM0_level2.evt modeM0/AS1A05_059T05_9000002478_16722cztM0_level2_quad_clean.evt
Size (bytes)569,056,320144,411,840
Size542.7 MB 137.7 MB
Events in quadrant A4,171,982969,347
Events in quadrant B4,045,568985,643
Events in quadrant C4,220,472944,308
Events in quadrant D4,262,670928,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179173
B0171962
C0179052
D0182522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78502062.624204%
B78501051.337580%
C78501281.630573%
D78501151.464968%

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 8751 7854 93 93 1.06% 1.18%
B 8751 7854 19 19 0.22% 0.24%
C 8751 7854 30 30 0.34% 0.38%
D 8751 7854 51 51 0.58% 0.65%

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 15 174 593375 3277.08 903 884 180.8
A 9 143 74351 406.35 903 884 180.8
A 10 234 17730 93.18 903 884 180.8
B 15 35 191664 1094.64 916 891 174.3
B 0 229 78036 442.65 916 891 174.3
B 3 209 42687 239.82 916 891 174.3
C 3 233 451968 2232.54 871 878 202.1
C 0 207 217263 1070.94 871 878 202.1
C 14 238 134756 662.59 871 878 202.1
D 1 52 381752 1788.19 878 852 213.0
D 10 70 176947 826.7 878 852 213.0
D 2 16 163430 763.24 878 852 213.0

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