ASTROSAT CZTI

Data Quality Report

Orbit 13797

Creation date: 2024-06-27T16:46:14.965190
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_199T01_9000002040_13797cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13797cztM0_level2_quad_clean.evt
Size (bytes)569,848,32094,861,440
Size543.4 MB 90.5 MB
Events in quadrant A3,976,601585,138
Events in quadrant B4,198,910590,015
Events in quadrant C3,957,491578,811
Events in quadrant D4,579,542560,284

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168413
B0173942
C0168462
D0185682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80292463.063893%
B80293073.823639%
C80291842.291693%
D80292453.051439%

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 9535 8030 0 0 0.00% 0.00%
B 9535 8031 9 9 0.09% 0.11%
C 9535 8032 2 2 0.02% 0.02%
D 9535 8032 59 59 0.62% 0.73%

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 8 15 48032 228.12 1011 986 206.2
A 1 162 23794 110.59 1011 986 206.2
A 0 226 9167 39.67 1011 986 206.2
B 0 219 146669 744.38 1010 984 195.7
B 3 209 30795 152.32 1010 984 195.7
B 12 111 23301 114.03 1010 984 195.7
C 3 233 101805 434.84 986 990 231.8
C 14 234 12315 48.85 986 990 231.8
C 13 61 7202 26.79 986 990 231.8
D 1 52 547754 2289.2 975 950 238.9
D 10 157 265636 1108.11 975 950 238.9
D 13 249 49188 201.95 975 950 238.9

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