ASTROSAT CZTI

Data Quality Report

Orbit 22772

Creation date: 2024-06-27T18:45:33.515685
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_168T01_9000003368_22772cztM0_level2.evt modeM0/AS1T03_168T01_9000003368_22772cztM0_level2_quad_clean.evt
Size (bytes)446,811,840126,368,640
Size426.1 MB 120.5 MB
Events in quadrant A3,037,498865,282
Events in quadrant B3,143,271869,541
Events in quadrant C2,996,171828,120
Events in quadrant D3,914,375812,761

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132712
B0134891
C0132641
D0159541

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6476560.864731%
B6477691.065308%
C6477981.513046%
D64771622.501158%

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 7011 6477 0 0 0.00% 0.00%
B 7012 6478 2 2 0.03% 0.03%
C 7012 6478 0 0 0.00% 0.00%
D 7012 6478 111 111 1.58% 1.71%

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 10 17 41208 261.1 774 759 154.9
A 13 254 11912 71.99 774 759 154.9
A 0 226 6961 40.03 774 759 154.9
B 0 230 70781 485.22 771 752 144.3
B 0 228 33985 230.27 771 752 144.3
B 12 111 16434 108.66 771 752 144.3
C 14 238 117767 681.45 736 740 171.7
C 13 61 5418 27.24 736 740 171.7
C 10 22 4648 22.76 736 740 171.7
D 1 52 774795 4295.59 744 722 180.2
D 12 233 148060 817.63 744 722 180.2
D 9 85 62129 340.77 744 722 180.2

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