ASTROSAT CZTI

Data Quality Report

Orbit 20368

Creation date: 2024-06-27T18:14:30.652674
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/AS1A05_205T01_9000003012_20368cztM0_level2.evt modeM0/AS1A05_205T01_9000003012_20368cztM0_level2_quad_clean.evt
Size (bytes)493,747,20078,609,600
Size470.9 MB 75.0 MB
Events in quadrant A3,243,714486,488
Events in quadrant B3,402,679494,066
Events in quadrant C3,276,344476,796
Events in quadrant D4,576,677457,004

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138362
B0140592
C0137372
D0180612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6681640.957940%
B6681931.392007%
C66811041.556653%
D66813525.268672%

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 7571 6682 2 2 0.03% 0.03%
B 7571 6682 7 7 0.09% 0.10%
C 7571 6682 0 0 0.00% 0.00%
D 7571 6682 246 246 3.25% 3.68%

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 51594 303.56 827 810 167.3
A 3 1 7609 40.64 827 810 167.3
A 0 226 7070 37.42 827 810 167.3
B 0 198 69902 437.06 829 807 158.1
B 4 80 23862 145.83 829 807 158.1
B 0 197 22587 137.77 829 807 158.1
C 14 238 125606 669.06 802 809 186.5
C 1 16 11136 55.37 802 809 186.5
C 10 91 7137 33.93 802 809 186.5
D 1 52 1427753 7353.52 796 774 194.1
D 2 120 46643 236.37 796 774 194.1
D 2 184 39555 199.85 796 774 194.1

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