ASTROSAT CZTI

Data Quality Report

Orbit 18087

Creation date: 2024-06-27T17:44:53.160156
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/AS1A06_006T01_9000002684_18087cztM0_level2.evt modeM0/AS1A06_006T01_9000002684_18087cztM0_level2_quad_clean.evt
Size (bytes)434,646,72085,446,720
Size414.5 MB 81.5 MB
Events in quadrant A3,062,994554,026
Events in quadrant B3,189,085537,641
Events in quadrant C3,037,701528,832
Events in quadrant D3,449,505531,574

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132842
B0135462
C0129932
D0145652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6242410.656841%
B6242380.608779%
C6242500.801025%
D6242631.009292%

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 6802 6243 16 16 0.24% 0.26%
B 6802 6243 6 6 0.09% 0.10%
C 6802 6243 0 0 0.00% 0.00%
D 6801 6242 42 42 0.62% 0.67%

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 15 174 146769 957.89 752 736 152.5
A 4 2 22430 142.3 752 736 152.5
A 0 226 6675 38.96 752 736 152.5
B 3 64 92893 636.38 746 727 144.8
B 7 220 71594 489.32 746 727 144.8
B 0 189 36609 247.76 746 727 144.8
C 3 233 124667 725.23 717 723 170.9
C 14 238 110337 641.38 717 723 170.9
C 13 61 4983 24.92 717 723 170.9
D 11 176 600124 3322.2 729 709 180.4
D 10 70 29017 156.89 729 709 180.4
D 2 234 27970 151.09 729 709 180.4

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