ASTROSAT CZTI

Data Quality Report

Orbit 21218

Creation date: 2024-06-27T18:25:06.669620
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_005T05_9000003136_21218cztM0_level2.evt modeM0/AS1A06_005T05_9000003136_21218cztM0_level2_quad_clean.evt
Size (bytes)516,977,280105,998,400
Size493.0 MB 101.1 MB
Events in quadrant A3,293,114724,843
Events in quadrant B3,190,635736,819
Events in quadrant C4,577,420660,629
Events in quadrant D4,180,577660,602

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137291
B0133941
C0176961
D0166261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6119590.964210%
B6120500.816993%
C61205398.807190%
D61202243.660131%

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 7414 6119 7 7 0.09% 0.11%
B 7415 6120 2 2 0.03% 0.03%
C 7415 6120 320 320 4.32% 5.23%
D 7415 6120 180 180 2.43% 2.94%

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 11 47 94511 576.87 809 797 162.5
A 15 236 74690 454.86 809 797 162.5
A 13 254 10246 58.16 809 797 162.5
B 0 190 18381 116.9 801 785 150.5
B 12 111 17002 107.74 801 785 150.5
B 3 64 15250 96.1 801 785 150.5
C 3 233 1581385 9294.81 736 742 170.1
C 14 238 116083 678.25 736 742 170.1
C 0 207 7930 42.27 736 742 170.1
D 14 34 337139 1830.43 763 743 183.8
D 1 52 249281 1352.37 763 743 183.8
D 7 238 228484 1239.2 763 743 183.8

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