ASTROSAT CZTI

Data Quality Report

Orbit 04420

Creation date: 2024-06-27T14:41:44.920526
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/AS1G05_230T04_9000000550_04420cztM0_level2.evt modeM0/AS1G05_230T04_9000000550_04420cztM0_level2_quad_clean.evt
Size (bytes)635,267,52095,765,760
Size605.8 MB 91.3 MB
Events in quadrant A3,797,026617,890
Events in quadrant B4,516,637603,823
Events in quadrant C2,993,009622,896
Events in quadrant D7,452,164561,229

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164442
B0183541
C0143621
D0272941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70951972.776603%
B70953504.933051%
C7095100.140944%
D7095120416.969697%

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 7445 7096 105 105 1.41% 1.48%
B 7445 7096 236 236 3.17% 3.33%
C 7445 7096 0 0 0.00% 0.00%
D 7445 7096 1421 1421 19.09% 20.03%

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 0 13 546089 3406.56 779 762 160.1
A 13 251 145967 907.07 779 762 160.1
A 0 50 62466 385.45 779 762 160.1
B 10 16 839440 5585.23 777 757 150.2
B 14 167 593871 3949.85 777 757 150.2
B 15 204 20592 132.09 777 757 150.2
C 9 16 25514 140.68 756 758 176.0
C 12 4 12131 64.63 756 758 176.0
C 13 61 6276 31.36 756 758 176.0
D 13 114 4426526 25267.17 720 698 175.2
D 2 136 74888 423.55 720 698 175.2
D 13 239 55688 313.94 720 698 175.2

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