ASTROSAT CZTI

Data Quality Report

Orbit 35253

Creation date: 2022-04-06T02:46:52.938514
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/AS1A11_047T09_9000005054_35253cztM0_level2.evt modeM0/AS1A11_047T09_9000005054_35253cztM0_level2_quad_clean.evt
Size (bytes)670,573,44070,686,720
Size639.5 MB 67.4 MB
Events in quadrant A2,840,868476,656
Events in quadrant B8,784,458356,172
Events in quadrant C3,283,012466,750
Events in quadrant D4,991,182417,558

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124543
B0302582
C0133412
D0189462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6040100.165563%
B6040223837.052980%
C60401091.804636%
D60405128.476821%

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 7323 6041 1 1 0.01% 0.02%
B 7323 6041 1693 1693 23.12% 28.03%
C 7323 6041 85 85 1.16% 1.41%
D 7323 6041 457 457 6.24% 7.56%

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 104321 730.49 696 683 141.9
A 9 143 17862 121.09 696 683 141.9
A 13 6 16743 113.2 696 683 141.9
B 5 236 5514903 48715.82 588 573 113.2
B 5 172 649448 5732.42 588 573 113.2
B 4 232 179378 1579.64 588 573 113.2
C 0 10 344445 2181.96 676 681 157.5
C 15 214 252075 1595.66 676 681 157.5
C 14 67 33528 208.49 676 681 157.5
D 10 118 997736 6203.74 656 637 160.7
D 8 195 626553 3894.32 656 637 160.7
D 7 80 359441 2232.4 656 637 160.7

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