ASTROSAT CZTI

Data Quality Report

Orbit 19391

Creation date: 2024-06-27T18:02:17.980242
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/AS1A05_208T03_9000002874_19391cztM0_level2.evt modeM0/AS1A05_208T03_9000002874_19391cztM0_level2_quad_clean.evt
Size (bytes)643,596,48065,456,640
Size613.8 MB 62.4 MB
Events in quadrant A3,139,546413,776
Events in quadrant B3,211,195420,407
Events in quadrant C3,147,442396,796
Events in quadrant D9,551,421295,454

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133882
B0135012
C0133962
D0328412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6516550.844076%
B6516620.951504%
C6516711.089626%
D6516266840.945365%

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 7521 6516 0 0 0.00% 0.00%
B 7521 6516 2 2 0.03% 0.03%
C 7521 6516 0 0 0.00% 0.00%
D 7521 6516 2374 2374 31.56% 36.43%

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 9067 50.39 813 797 164.1
A 0 226 7071 38.23 813 797 164.1
A 3 137 6547 35.03 813 797 164.1
B 0 230 25945 162.17 807 787 155.1
B 12 111 19117 118.15 807 787 155.1
B 11 111 16910 103.93 807 787 155.1
C 14 238 120298 661.24 771 773 180.8
C 3 233 12074 62.52 771 773 180.8
C 13 61 5512 26.22 771 773 180.8
D 10 66 5969934 36255.98 675 654 164.6
D 1 52 522897 3171.98 675 654 164.6
D 7 238 271723 1646.41 675 654 164.6

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