ASTROSAT CZTI

Data Quality Report

Orbit 33652

Creation date: 2024-06-27T20:51:06.483408
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/AS1T04_076T01_9000004810_33652cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33652cztM0_level2_quad_clean.evt
Size (bytes)544,230,72051,566,400
Size519.0 MB 49.2 MB
Events in quadrant A3,363,248300,381
Events in quadrant B4,516,025298,604
Events in quadrant C3,431,022305,528
Events in quadrant D4,808,344280,657

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134303
B0169112
C0135252
D0179662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53661743.242639%
B53665359.970183%
C5366991.844950%
D53663205.963474%

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 7157 5367 149 149 2.08% 2.78%
B 7157 5367 440 440 6.15% 8.20%
C 7157 5367 83 83 1.16% 1.55%
D 7157 5367 281 281 3.93% 5.24%

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 15 237 512154 3785.81 672 660 135.1
A 15 169 200904 1482.1 672 660 135.1
A 13 6 18846 134.6 672 660 135.1
B 5 172 1205265 9701.6 653 636 124.2
B 4 170 525129 4224.06 653 636 124.2
B 5 200 80974 647.01 653 636 124.2
C 3 233 305268 2013.07 662 669 151.3
C 15 214 249127 1642.04 662 669 151.3
C 0 10 235511 1552.05 662 669 151.3
D 8 195 858968 4880.47 647 637 175.9
D 2 250 605038 3436.63 647 637 175.9
D 13 249 336156 1907.76 647 637 175.9

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