ASTROSAT CZTI

Data Quality Report

Orbit 11829

Creation date: 2024-06-27T16:18:50.768096
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_022T07_9000001748_11829cztM0_level2.evt modeM0/AS1A04_022T07_9000001748_11829cztM0_level2_quad_clean.evt
Size (bytes)1,024,902,72073,644,480
Size977.4 MB 70.2 MB
Events in quadrant A3,772,656531,756
Events in quadrant B19,213,166129,782
Events in quadrant C3,530,902521,389
Events in quadrant D4,002,077509,713

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163350
B0621320
C0159390
D0173210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76953094.015595%
B7695705291.643925%
C76952102.729045%
D76962773.599272%

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 7786 7699 2 2 0.03% 0.03%
B 7786 7699 6525 6525 83.80% 84.75%
C 7786 7699 0 0 0.00% 0.00%
D 7787 7700 35 35 0.45% 0.45%

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 81362 426.46 921 899 188.7
A 1 178 40580 210.31 921 899 188.7
A 1 161 35811 185.04 921 899 188.7
B 10 16 17484158 261521.83 343 335 66.9
B 4 239 238434 3561.47 343 335 66.9
B 3 64 75377 1122.47 343 335 66.9
C 13 61 6639 27.41 903 906 209.2
C 14 234 3912 14.37 903 906 209.2
C 8 222 3741 13.55 903 906 209.2
D 1 52 232742 1078.66 895 867 215.0
D 13 249 92781 427.57 895 867 215.0
D 13 104 55285 253.15 895 867 215.0

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