ASTROSAT CZTI

Data Quality Report

Orbit 23171

Creation date: 2024-06-27T18:50:50.296316
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/AS1A07_148T05_9000003424_23171cztM0_level2.evt modeM0/AS1A07_148T05_9000003424_23171cztM0_level2_quad_clean.evt
Size (bytes)668,661,12063,383,040
Size637.7 MB 60.4 MB
Events in quadrant A3,397,838378,981
Events in quadrant B3,686,119383,983
Events in quadrant C4,314,062368,960
Events in quadrant D8,404,670324,726

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144352
B0152442
C0171372
D0295192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6628410.618588%
B6628751.131563%
C66283054.601690%
D6628132119.930597%

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 7768 6629 1 1 0.01% 0.02%
B 7768 6629 2 2 0.03% 0.03%
C 7768 6629 79 79 1.02% 1.19%
D 7768 6629 1315 1315 16.93% 19.84%

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 13 254 9893 50.68 880 861 178.2
A 0 226 7743 38.62 880 861 178.2
A 6 16 7574 37.67 880 861 178.2
B 0 190 243738 1478.77 873 852 164.2
B 12 111 19510 113.6 873 852 164.2
B 11 111 17206 99.57 873 852 164.2
C 8 208 647358 3300.66 841 846 195.9
C 0 10 242742 1234.96 841 846 195.9
C 14 238 133335 676.4 841 846 195.9
D 7 238 4743416 23637.08 823 800 200.6
D 12 233 216035 1072.73 823 800 200.6
D 1 52 176563 876.0 823 800 200.6

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