ASTROSAT CZTI

Data Quality Report

Orbit 30881

Creation date: 2024-06-27T20:20:43.367775
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/AS1A10_071T49_9000004462_30881cztM0_level2.evt modeM0/AS1A10_071T49_9000004462_30881cztM0_level2_quad_clean.evt
Size (bytes)303,845,76063,878,400
Size289.8 MB 60.9 MB
Events in quadrant A1,781,722427,478
Events in quadrant B3,035,630423,945
Events in quadrant C1,789,426408,056
Events in quadrant D2,330,829400,992

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078530
B0119810
C078060
D093100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A388120.051533%
B3882350.901597%
C3882120.309119%
D3882471.210716%

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 3881 3881 0 0 0.00% 0.00%
B 3882 3882 17 17 0.44% 0.44%
C 3882 3882 0 0 0.00% 0.00%
D 3882 3882 50 50 1.29% 1.29%

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 12 96 14159 147.18 456 447 93.2
A 13 254 6858 68.81 456 447 93.2
A 8 255 5582 55.12 456 447 93.2
B 6 159 1060351 12083.57 447 436 87.7
B 4 171 57645 652.21 447 436 87.7
B 6 36 48860 552.05 447 436 87.7
C 14 238 69397 660.51 434 437 104.4
C 3 233 10566 97.02 434 437 104.4
C 2 114 8665 78.81 434 437 104.4
D 8 195 371923 3520.61 437 427 105.5
D 12 233 186390 1762.34 437 427 105.5
D 1 52 37186 348.36 437 427 105.5

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