ASTROSAT CZTI

Data Quality Report

Orbit 11886

Creation date: 2024-06-27T16:19:36.376854
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/AS1T01_209T01_9000001758_11886cztM0_level2.evt modeM0/AS1T01_209T01_9000001758_11886cztM0_level2_quad_clean.evt
Size (bytes)505,071,360101,468,160
Size481.7 MB 96.8 MB
Events in quadrant A3,651,634651,649
Events in quadrant B4,003,817657,998
Events in quadrant C3,135,885655,958
Events in quadrant D4,029,266619,551

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153963
B0164042
C0143512
D0163732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70061582.255210%
B70062984.253497%
C70061191.698544%
D70061732.469312%

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 8767 7009 9 9 0.10% 0.13%
B 8767 7009 91 91 1.04% 1.30%
C 8767 7009 1 1 0.01% 0.01%
D 8767 7009 52 52 0.59% 0.74%

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 7 144 133351 802.4 814 795 165.2
A 8 15 130860 787.32 814 795 165.2
A 1 162 91566 549.46 814 795 165.2
B 4 239 596150 3845.91 818 798 154.8
B 15 204 142167 913.23 818 798 154.8
B 0 214 22170 138.06 818 798 154.8
C 0 207 6708 32.06 801 801 184.2
C 13 61 5968 28.05 801 801 184.2
C 14 234 3373 13.96 801 801 184.2
D 8 195 394774 2083.89 791 766 189.1
D 10 50 285681 1506.9 791 766 189.1
D 1 52 80243 420.35 791 766 189.1

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