ASTROSAT CZTI

Data Quality Report

Orbit 08771

Creation date: 2024-06-27T15:36:59.305658
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/AS1G07_010T01_9000001220_08771cztM0_level2.evt modeM0/AS1G07_010T01_9000001220_08771cztM0_level2_quad_clean.evt
Size (bytes)474,042,240105,465,600
Size452.1 MB 100.6 MB
Events in quadrant A3,420,382697,706
Events in quadrant B3,133,653707,254
Events in quadrant C3,115,330698,866
Events in quadrant D4,269,884661,131

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141163
B0131992
C0131322
D0168112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6151791.284344%
B6151811.316859%
C6151661.072996%
D61512123.446594%

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 7486 6151 1 1 0.01% 0.02%
B 7486 6151 6 6 0.08% 0.10%
C 7486 6151 5 5 0.07% 0.08%
D 7486 6151 147 147 1.96% 2.39%

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 257614 1595.98 802 787 160.9
A 13 251 33071 200.62 802 787 160.9
A 13 248 32443 196.72 802 787 160.9
B 10 16 36292 238.32 798 780 149.0
B 12 111 16003 102.16 798 780 149.0
B 11 111 12824 80.83 798 780 149.0
C 9 68 39857 216.35 787 793 180.6
C 13 61 5936 28.48 787 793 180.6
C 12 4 4322 19.54 787 793 180.6
D 13 122 702499 3701.1 777 759 189.6
D 2 152 323423 1701.79 777 759 189.6
D 2 16 87430 457.12 777 759 189.6

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