ASTROSAT CZTI

Data Quality Report

Orbit 20872

Creation date: 2024-06-27T18:20:34.196718
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_160T01_9000003078_20872cztM0_level2.evt modeM0/AS1A05_160T01_9000003078_20872cztM0_level2_quad_clean.evt
Size (bytes)563,999,04085,389,120
Size537.9 MB 81.4 MB
Events in quadrant A3,438,856558,437
Events in quadrant B3,556,800570,752
Events in quadrant C3,356,665521,643
Events in quadrant D6,300,552493,703

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137713
B0142733
C0135553
D0231713

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6312550.871356%
B6313901.425630%
C6313761.203865%
D631381112.846507%

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 7667 6314 0 0 0.00% 0.00%
B 7668 6315 12 12 0.16% 0.19%
C 7668 6315 1 1 0.01% 0.02%
D 7668 6315 972 972 12.68% 15.39%

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 5 203 17981 97.7 890 875 175.1
A 0 226 7675 38.84 890 875 175.1
A 3 137 6920 34.53 890 875 175.1
B 3 64 49809 298.07 875 857 164.2
B 0 219 29891 176.79 875 857 164.2
B 0 229 27320 161.13 875 857 164.2
C 14 238 133757 700.06 824 832 189.9
C 9 54 9696 46.68 824 832 189.9
C 13 61 5720 25.74 824 832 189.9
D 1 20 2270616 11353.97 830 809 199.9
D 9 1 423635 2115.05 830 809 199.9
D 1 52 156586 779.22 830 809 199.9

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