ASTROSAT CZTI

Data Quality Report

Orbit 08120

Creation date: 2024-06-27T15:28:15.921847
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/AS1G06_033T01_9000001116_08120cztM0_level2.evt modeM0/AS1G06_033T01_9000001116_08120cztM0_level2_quad_clean.evt
Size (bytes)456,952,32067,633,920
Size435.8 MB 64.5 MB
Events in quadrant A3,282,506403,061
Events in quadrant B3,400,377406,137
Events in quadrant C3,239,450410,417
Events in quadrant D3,488,674388,846

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136293
B0139432
C0134162
D0144082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62941221.938354%
B62941211.922466%
C6294891.414045%
D62941392.208452%

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 7579 6294 3 3 0.04% 0.05%
B 7579 6294 10 10 0.13% 0.16%
C 7579 6294 0 0 0.00% 0.00%
D 7579 6295 38 38 0.50% 0.60%

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 12 112 9496 50.46 846 832 171.7
A 0 226 8070 42.15 846 832 171.7
A 12 194 7874 41.01 846 832 171.7
B 10 16 53324 324.08 849 832 162.0
B 0 219 19513 115.33 849 832 162.0
B 0 214 19324 114.17 849 832 162.0
C 13 61 6505 29.67 829 837 191.0
C 1 16 5728 25.6 829 837 191.0
C 14 67 2114 6.68 829 837 191.0
D 2 152 90915 445.0 829 806 202.5
D 13 105 77863 380.55 829 806 202.5
D 5 233 52101 253.32 829 806 202.5

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