ASTROSAT CZTI

Data Quality Report

Orbit 35604

Creation date: 2022-04-29T19:44:06.711824
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/AS1A10_065T04_9000005098_35604cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35604cztM0_level2_quad_clean.evt
Size (bytes)500,068,80085,265,280
Size476.9 MB 81.3 MB
Events in quadrant A2,727,276567,402
Events in quadrant B4,250,036548,484
Events in quadrant C3,701,795549,025
Events in quadrant D4,082,237521,769

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117803
B0163302
C0144852
D0158992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5645190.336581%
B56454407.794508%
C56451703.011515%
D56453416.040744%

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 7258 5646 7 7 0.10% 0.12%
B 7258 5646 286 286 3.94% 5.07%
C 7258 5646 128 128 1.76% 2.27%
D 7258 5646 289 289 3.98% 5.12%

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 143227 1069.26 654 641 133.4
A 7 3 31424 230.84 654 641 133.4
A 13 6 12988 92.59 654 641 133.4
B 5 172 1643626 13412.4 629 612 122.5
B 15 85 75819 613.94 629 612 122.5
B 3 112 21021 166.6 629 612 122.5
C 0 10 796008 5395.91 628 632 147.4
C 15 214 231373 1565.37 628 632 147.4
C 0 207 204157 1380.73 628 632 147.4
D 12 227 797588 5117.73 627 610 155.7
D 10 118 305047 1954.92 627 610 155.7
D 13 249 132260 845.38 627 610 155.7

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