ASTROSAT CZTI

Data Quality Report

Orbit 20200618_A09_008T05_9000003724_level2

Creation date: 2021-01-10T11:55:56.734386
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A09_008T05_9000003724cztM0_level2_bc.evt modeM0/AS1A09_008T05_9000003724cztM0_level2_quad_clean.evt
Size (bytes)3,205,938,2401,073,226,240
Size3.0 GB 1023.5 MB
Events in quadrant A19,934,6796,901,604
Events in quadrant B18,375,0976,979,723
Events in quadrant C20,851,6826,483,488
Events in quadrant D32,095,5456,269,444

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01827230
B01784180
C01897850
D02273880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017420
B017420
C017420
D017420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01430
B01430
C01430
D01430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8567910161.185821%
B8567910971.280360%
C8567926553.098776%
D8567831553.682392%

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 99720 85681 10 10 0.01% 0.01%
B 99720 85680 0 0 0.00% 0.00%
C 99720 85679 137 137 0.14% 0.16%
D 99720 85660 429 429 0.43% 0.50%

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 6 16 1732813 1700.53 4719 4635 1016.3
A 13 254 117123 110.69 4719 4635 1016.3
A 0 226 29859 24.82 4719 4635 1016.3
B 0 190 106742 114.46 4752 4640 892.0
B 3 112 106257 113.92 4752 4640 892.0
B 8 61 30482 28.97 4752 4640 892.0
C 2 16 3559365 3440.45 4446 4427 1033.3
C 3 233 180363 170.27 4446 4427 1033.3
C 13 61 25272 20.17 4446 4427 1033.3
D 1 52 8185482 7557.85 4472 4339 1082.5
D 8 195 5794029 5348.59 4472 4339 1082.5
D 2 244 364895 333.09 4472 4339 1082.5

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