ASTROSAT CZTI

Data Quality Report

Orbit 16889

Creation date: 2024-06-27T17:29:00.814716
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_004T06_9000002506_16889cztM0_level2.evt modeM0/AS1A05_004T06_9000002506_16889cztM0_level2_quad_clean.evt
Size (bytes)578,606,40071,173,440
Size551.8 MB 67.9 MB
Events in quadrant A4,345,734449,295
Events in quadrant B3,340,495460,126
Events in quadrant C3,171,358436,938
Events in quadrant D6,227,224357,086

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171003
B0139552
C0134262
D0228572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64661452.242499%
B6466290.448500%
C6466330.510362%
D6466114917.769873%

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 7677 6468 90 90 1.17% 1.39%
B 7677 6468 0 0 0.00% 0.00%
C 7677 6468 1 1 0.01% 0.02%
D 7677 6468 649 649 8.45% 10.03%

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 1267966 7902.08 799 783 160.4
A 9 143 7346 40.93 799 783 160.4
A 0 226 6922 38.28 799 783 160.4
B 0 219 77585 503.2 807 791 152.6
B 15 35 64209 415.55 807 791 152.6
B 10 16 20069 126.32 807 791 152.6
C 14 238 120463 670.81 771 776 178.4
C 3 233 26805 145.88 771 776 178.4
C 14 225 11141 58.09 771 776 178.4
D 1 52 3522685 21283.38 677 659 165.5
D 2 33 111608 670.46 677 659 165.5
D 2 234 24366 143.26 677 659 165.5

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