ASTROSAT CZTI

Data Quality Report

Orbit 18149

Creation date: 2024-06-27T17:45:44.082166
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_082T08_9000002698_18149cztM0_level2.evt modeM0/AS1A05_082T08_9000002698_18149cztM0_level2_quad_clean.evt
Size (bytes)425,689,92076,910,400
Size406.0 MB 73.3 MB
Events in quadrant A2,951,411493,951
Events in quadrant B2,984,202499,516
Events in quadrant C2,919,637475,488
Events in quadrant D3,655,300467,192

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121131
B0121251
C0119051
D0145011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5617641.139398%
B5616731.299858%
C5616631.121795%
D5617771.370839%

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 6867 5619 2 2 0.03% 0.04%
B 6866 5618 8 8 0.12% 0.14%
C 6866 5618 1 1 0.01% 0.02%
D 6867 5619 35 35 0.51% 0.62%

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 4 2 49113 320.88 749 737 150.8
A 15 174 24234 155.86 749 737 150.8
A 0 226 6721 39.69 749 737 150.8
B 7 220 69238 487.5 735 718 140.6
B 4 173 17489 119.32 735 718 140.6
B 12 111 16046 109.06 735 718 140.6
C 14 238 110695 672.4 706 712 163.6
C 3 233 48801 294.0 706 712 163.6
C 13 61 4925 25.76 706 712 163.6
D 7 238 621755 3519.24 724 705 176.5
D 10 70 109478 616.37 724 705 176.5
D 11 176 57641 322.63 724 705 176.5

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