ASTROSAT CZTI

Data Quality Report

Orbit 03662

Creation date: 2024-06-27T14:32:07.251620
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_191T01_9000000476_03662cztM0_level2.evt modeM0/AS1G05_191T01_9000000476_03662cztM0_level2_quad_clean.evt
Size (bytes)450,195,84061,986,240
Size429.3 MB 59.1 MB
Events in quadrant A3,249,083364,658
Events in quadrant B3,555,554359,657
Events in quadrant C3,106,791357,738
Events in quadrant D3,283,781344,112

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134852
B0143891
C0133181
D0139411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64601211.873065%
B64601322.043344%
C6460911.408669%
D64601402.167183%

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 7675 6461 1 1 0.01% 0.02%
B 7675 6461 4 4 0.05% 0.06%
C 7675 6461 0 0 0.00% 0.00%
D 7675 6461 34 34 0.44% 0.53%

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 8 15 27937 162.73 826 814 166.7
A 0 50 18305 104.94 826 814 166.7
A 0 226 8990 49.05 826 814 166.7
B 15 204 222225 1396.93 828 811 158.5
B 0 199 24852 151.68 828 811 158.5
B 5 172 17637 106.16 828 811 158.5
C 9 247 7683 37.65 792 798 182.9
C 13 61 6912 33.44 792 798 182.9
C 10 34 2743 10.64 792 798 182.9
D 13 223 149724 787.9 793 771 189.0
D 2 37 52388 273.03 793 771 189.0
D 13 172 32625 168.5 793 771 189.0

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
Veto Counter