ASTROSAT CZTI

Data Quality Report

Orbit 14924

Creation date: 2024-06-27T17:01:23.724776
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/AS1A04_099T01_9000002204_14924cztM0_level2.evt modeM0/AS1A04_099T01_9000002204_14924cztM0_level2_quad_clean.evt
Size (bytes)522,109,44066,222,720
Size497.9 MB 63.2 MB
Events in quadrant A3,245,523406,571
Events in quadrant B5,826,683399,497
Events in quadrant C3,254,995388,435
Events in quadrant D3,069,077382,874

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130643
B0211312
C0130322
D0128842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61271051.713726%
B6127121819.879223%
C6127801.305696%
D6127711.158805%

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 7368 6129 0 0 0.00% 0.00%
B 7368 6129 899 899 12.20% 14.67%
C 7368 6129 0 0 0.00% 0.00%
D 7368 6129 2 2 0.03% 0.03%

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 12 189 34828 203.98 836 822 166.7
A 0 226 7437 39.68 836 822 166.7
A 12 194 5957 30.8 836 822 166.7
B 10 16 2977394 21625.2 722 704 137.6
B 0 229 23507 165.66 722 704 137.6
B 12 111 16461 114.47 722 704 137.6
C 3 233 151873 827.03 795 804 182.7
C 13 61 5717 26.9 795 804 182.7
C 10 22 4157 18.36 795 804 182.7
D 13 104 22371 114.03 799 781 189.3
D 2 234 20293 103.06 799 781 189.3
D 13 249 14346 71.65 799 781 189.3

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