ASTROSAT CZTI

Data Quality Report

Orbit 21946

Creation date: 2024-06-27T18:34:20.800787
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/AS1A07_007T02_9000003244_21946cztM0_level2.evt modeM0/AS1A07_007T02_9000003244_21946cztM0_level2_quad_clean.evt
Size (bytes)473,181,12098,043,840
Size451.3 MB 93.5 MB
Events in quadrant A3,337,188624,680
Events in quadrant B3,562,570636,122
Events in quadrant C3,439,394622,371
Events in quadrant D3,524,447607,508

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143792
B0149392
C0144582
D0150332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6858600.874891%
B68591241.807844%
C68591321.924479%
D6859851.239248%

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 8963 6860 0 0 0.00% 0.00%
B 8964 6861 24 24 0.27% 0.35%
C 8964 6859 0 0 0.00% 0.00%
D 8964 6861 42 42 0.47% 0.61%

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 13 254 11071 58.93 864 846 173.5
A 3 137 7492 38.3 864 846 173.5
A 0 226 7460 38.12 864 846 173.5
B 3 64 135193 829.86 856 834 161.9
B 0 230 30089 180.69 856 834 161.9
B 0 197 22118 131.46 856 834 161.9
C 14 238 131936 661.56 846 853 198.1
C 13 61 5617 24.04 846 853 198.1
C 4 175 4650 19.16 846 853 198.1
D 11 176 158420 765.18 850 826 206.0
D 1 52 121100 583.97 850 826 206.0
D 2 234 23956 112.3 850 826 206.0

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