ASTROSAT CZTI

Data Quality Report

Orbit 08640

Creation date: 2024-06-27T15:35:19.448697
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/AS1G07_024T01_9000001206_08640cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08640cztM0_level2_quad_clean.evt
Size (bytes)415,598,400125,012,160
Size396.3 MB 119.2 MB
Events in quadrant A2,871,648828,011
Events in quadrant B3,130,499861,865
Events in quadrant C2,907,795857,517
Events in quadrant D3,248,583800,257

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129453
B0134822
C0129362
D0142192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6288170.270356%
B6288290.461196%
C6288110.174936%
D62881091.733461%

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 7598 6289 5 5 0.07% 0.08%
B 7598 6288 6 6 0.08% 0.10%
C 7598 6289 0 0 0.00% 0.00%
D 7598 6289 90 90 1.18% 1.43%

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 5 16 18776 122.16 735 720 147.8
A 15 174 12554 80.06 735 720 147.8
A 0 226 7139 43.43 735 720 147.8
B 0 219 100607 714.53 756 740 139.8
B 0 214 25749 178.93 756 740 139.8
B 4 80 22082 152.7 756 740 139.8
C 12 4 13876 77.37 740 744 169.7
C 8 208 6446 33.6 740 744 169.7
C 13 61 5656 28.94 740 744 169.7
D 10 253 190518 1078.35 722 700 176.0
D 13 29 89048 501.9 722 700 176.0
D 7 71 86651 488.28 722 700 176.0

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