ASTROSAT CZTI

Data Quality Report

Orbit 18368

Creation date: 2024-06-27T17:48:54.380652
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/AS1T03_083T01_9000002722_18368cztM0_level2.evt modeM0/AS1T03_083T01_9000002722_18368cztM0_level2_quad_clean.evt
Size (bytes)415,163,520100,762,560
Size395.9 MB 96.1 MB
Events in quadrant A2,809,431671,221
Events in quadrant B3,080,319698,723
Events in quadrant C3,049,309661,810
Events in quadrant D3,247,753622,378

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118181
B0126691
C0123961
D0130931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5682190.334389%
B5683731.284533%
C5683731.284533%
D56831883.308112%

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 6993 5683 4 4 0.06% 0.07%
B 6994 5684 15 15 0.21% 0.26%
C 6994 5684 15 15 0.21% 0.26%
D 6994 5684 135 135 1.93% 2.38%

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 4 2 46485 320.73 715 704 142.7
A 15 174 6563 41.05 715 704 142.7
A 0 226 6344 39.51 715 704 142.7
B 3 64 92160 679.21 727 711 134.6
B 7 220 74366 547.05 727 711 134.6
B 4 216 47898 350.47 727 711 134.6
C 0 207 116833 712.71 705 713 162.9
C 14 238 111711 681.27 705 713 162.9
C 3 233 72193 438.72 705 713 162.9
D 1 52 457248 2739.91 692 673 166.6
D 12 110 105850 631.17 692 673 166.6
D 2 234 24477 142.85 692 673 166.6

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