ASTROSAT CZTI

Data Quality Report

Orbit 12028

Creation date: 2024-06-27T16:21:24.291521
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/AS1A04_044T01_9000001782_12028cztM0_level2.evt modeM0/AS1A04_044T01_9000001782_12028cztM0_level2_quad_clean.evt
Size (bytes)450,014,400106,689,600
Size429.2 MB 101.7 MB
Events in quadrant A3,397,147711,378
Events in quadrant B3,280,667727,079
Events in quadrant C2,998,142692,047
Events in quadrant D3,521,414657,617

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141922
B0136991
C0130991
D0146381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6353841.322210%
B6353630.991657%
C6353300.472218%
D6353901.416654%

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 7664 6355 5 5 0.07% 0.08%
B 7664 6355 2 2 0.03% 0.03%
C 7664 6355 1 1 0.01% 0.02%
D 7664 6356 71 71 0.93% 1.12%

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 1 162 111974 690.64 800 788 161.0
A 1 178 57284 350.93 800 788 161.0
A 1 161 50563 309.18 800 788 161.0
B 4 239 51187 331.56 804 787 152.0
B 15 204 40125 258.79 804 787 152.0
B 0 85 34023 218.65 804 787 152.0
C 13 61 5554 27.04 767 773 176.8
C 12 4 5338 25.82 767 773 176.8
C 14 234 4912 23.41 767 773 176.8
D 1 52 258131 1439.52 754 734 178.8
D 13 105 181262 1009.62 754 734 178.8
D 13 122 84338 467.56 754 734 178.8

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