ASTROSAT CZTI

Data Quality Report

Orbit 18612

Creation date: 2024-06-27T17:52:24.509566
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_083T01_9000002772_18612cztM0_level2.evt modeM0/AS1A05_083T01_9000002772_18612cztM0_level2_quad_clean.evt
Size (bytes)486,201,60071,688,960
Size463.7 MB 68.4 MB
Events in quadrant A3,454,517433,865
Events in quadrant B3,417,948443,426
Events in quadrant C3,510,203430,686
Events in quadrant D3,912,897421,493

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144992
B0142792
C0146242
D0158772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6325590.932806%
B6325701.106719%
C63251121.770751%
D63241552.450980%

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 7570 6325 3 3 0.04% 0.05%
B 7570 6325 1 1 0.01% 0.02%
C 7570 6325 4 4 0.05% 0.06%
D 7569 6324 92 92 1.22% 1.45%

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 0 13 84978 489.1 865 848 172.0
A 9 143 20531 114.43 865 848 172.0
A 14 111 12037 65.05 865 848 172.0
B 12 111 18694 109.71 865 846 162.7
B 11 111 16445 95.89 865 846 162.7
B 0 189 15502 90.09 865 846 162.7
C 14 238 134142 686.67 840 847 194.1
C 3 233 88365 450.85 840 847 194.1
C 9 54 12547 60.27 840 847 194.1
D 5 222 290196 1408.36 846 823 205.5
D 1 52 235385 1141.6 846 823 205.5
D 7 238 77365 372.52 846 823 205.5

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