ASTROSAT CZTI

Data Quality Report

Orbit 26979

Creation date: 2024-06-27T19:35:11.711072
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/AS1A09_145T01_9000003900_26979cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_26979cztM0_level2_quad_clean.evt
Size (bytes)671,279,04098,380,800
Size640.2 MB 93.8 MB
Events in quadrant A8,366,366516,934
Events in quadrant B3,488,741698,085
Events in quadrant C3,564,733672,070
Events in quadrant D4,479,439647,572

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293660
B0144330
C0147210
D0175870

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6367222834.992932%
B6366570.895382%
C63661141.790763%
D63662413.785737%

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 7591 6366 1752 1752 23.08% 27.52%
B 7591 6366 0 0 0.00% 0.00%
C 7591 6366 3 3 0.04% 0.05%
D 7591 6366 148 148 1.95% 2.32%

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 14 235 5416759 36607.46 743 733 147.9
A 6 16 48586 323.44 743 733 147.9
A 8 192 24746 162.31 743 733 147.9
B 12 111 18999 108.01 887 868 167.9
B 11 111 16893 95.46 887 868 167.9
B 14 111 14855 83.32 887 868 167.9
C 14 238 136755 676.98 863 875 200.7
C 2 16 32512 157.62 863 875 200.7
C 15 208 25112 120.75 863 875 200.7
D 1 52 964443 4753.17 856 836 202.7
D 2 250 167923 824.19 856 836 202.7
D 11 176 71680 349.45 856 836 202.7

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