ASTROSAT CZTI

Data Quality Report

Orbit 11516

Creation date: 2024-06-27T16:14:05.196118
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/AS1A04_021T06_9000001688_11516cztM0_level2.evt modeM0/AS1A04_021T06_9000001688_11516cztM0_level2_quad_clean.evt
Size (bytes)648,521,28066,890,880
Size618.5 MB 63.8 MB
Events in quadrant A8,136,786322,956
Events in quadrant B4,401,561391,491
Events in quadrant C3,155,374425,120
Events in quadrant D3,476,294401,800

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0287983
B0176922
C0141112
D0150092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6933218331.487091%
B69333004.327131%
C6933360.519256%
D6934540.778771%

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 7859 6932 1350 1350 17.18% 19.47%
B 7859 6935 140 140 1.78% 2.02%
C 7859 6935 0 0 0.00% 0.00%
D 7860 6936 24 24 0.31% 0.35%

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 5 5551861 41556.91 648 633 133.6
A 9 143 38775 285.53 648 633 133.6
A 8 15 11061 78.06 648 633 133.6
B 4 239 667286 4262.7 813 792 156.4
B 3 64 303823 1938.1 813 792 156.4
B 15 204 76244 482.57 813 792 156.4
C 13 61 6045 27.77 809 815 188.4
C 3 202 1925 5.89 809 815 188.4
C 12 4 1792 5.19 809 815 188.4
D 2 120 107935 557.15 798 775 192.3
D 1 52 74658 384.14 798 775 192.3
D 13 122 56499 289.72 798 775 192.3

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