ASTROSAT CZTI

Data Quality Report

Orbit 16675

Creation date: 2024-06-27T17:26:05.065331
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_104T04_9000002464_16675cztM0_level2.evt modeM0/AS1A05_104T04_9000002464_16675cztM0_level2_quad_clean.evt
Size (bytes)566,265,600110,139,840
Size540.0 MB 105.0 MB
Events in quadrant A3,414,397754,903
Events in quadrant B3,896,527755,713
Events in quadrant C3,431,563718,149
Events in quadrant D5,966,539653,633

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142073
B0157902
C0140962
D0220342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64941552.386819%
B64941712.633200%
C64941812.787188%
D649497815.060055%

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 7785 6496 0 0 0.00% 0.00%
B 7785 6496 12 12 0.15% 0.18%
C 7785 6496 0 0 0.00% 0.00%
D 7785 6496 651 651 8.36% 10.02%

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 3 1 24521 135.49 877 862 174.6
A 9 143 8862 45.82 877 862 174.6
A 0 226 8041 41.11 877 862 174.6
B 15 35 217453 1338.02 868 849 161.9
B 0 229 187860 1155.21 868 849 161.9
B 0 189 30252 181.63 868 849 161.9
C 14 238 130302 675.74 829 838 191.6
C 3 233 65733 338.72 829 838 191.6
C 13 61 5930 26.58 829 838 191.6
D 2 16 1981286 10070.96 815 794 196.7
D 1 52 606261 3078.85 815 794 196.7
D 10 70 180427 913.45 815 794 196.7

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