ASTROSAT CZTI

Data Quality Report

Orbit 47156

Creation date: 2024-06-27T23:32:20.175297
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/AS1C09_003T01_9000006298_47156cztM0_level2.fits modeM0/AS1C09_003T01_9000006298_47156cztM0_level2_quad_clean.evt
Size (bytes)415,929,600107,032,320
Size396.7 MB 102.1 MB
Events in quadrant A6,302,791719,170
Events in quadrant B3,166,519741,382
Events in quadrant C2,714,867697,547
Events in quadrant D2,725,087645,694

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228761
B0136751
C0128522
D0129871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62691362.169405%
B6270761.212121%
C6269120.191418%
D626990.143564%

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 7519 6270 21 21 0.28% 0.33%
B 7520 6271 26 26 0.35% 0.41%
C 7519 6270 4 4 0.05% 0.06%
D 7519 6270 6 6 0.08% 0.10%

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 83 3523415 24776.93 696 683 142.2
A 9 191 25125 171.91 696 683 142.2
A 15 235 19395 131.61 696 683 142.2
B 5 255 140841 1049.42 696 676 133.6
B 4 21 130114 969.11 696 676 133.6
B 0 200 60810 450.23 696 676 133.6
C 14 254 70700 444.98 674 677 157.4
C 3 233 9381 55.31 674 677 157.4
C 13 61 4647 25.23 674 677 157.4
D 2 234 32021 187.58 673 652 167.2
D 8 176 27926 163.09 673 652 167.2
D 2 249 19851 114.81 673 652 167.2

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