ASTROSAT CZTI

Data Quality Report

Orbit 20210528_A10_103T02_9000004416_level2

Creation date: 2021-05-31T13:04:59.119589
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_103T02_9000004416cztM0_level2_bc.evt modeM0/AS1A10_103T02_9000004416cztM0_level2_quad_clean.evt
Size (bytes)4,936,515,840859,893,120
Size4.6 GB 820.1 MB
Events in quadrant A17,038,4195,699,344
Events in quadrant B31,855,1945,666,807
Events in quadrant C17,904,6605,439,178
Events in quadrant D78,436,9314,907,895

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01050
B01050
C01050
D01050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01429820
B01946910
C01498020
D03306860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012900
B012900
C012900
D012900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6309414732.334612%
B6309417782.818018%
C6309427044.285669%
D630941400822.201794%

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 73919 63100 74 74 0.10% 0.12%
B 73919 63097 29 29 0.04% 0.05%
C 73919 63095 161 161 0.22% 0.26%
D 73919 63095 7729 7729 10.46% 12.25%

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 0 13 2825957 3646.8 3639 3590 773.9
A 8 192 115705 144.86 3639 3590 773.9
A 13 254 111864 139.9 3639 3590 773.9
B 6 159 16677690 24611.09 3641 3574 677.5
B 6 36 611140 896.77 3641 3574 677.5
B 0 229 245690 357.36 3641 3574 677.5
C 10 22 2939587 3605.35 3478 3487 814.4
C 3 233 965594 1181.41 3478 3487 814.4
C 0 10 330967 402.13 3478 3487 814.4
D 8 195 53358697 70737.75 3329 3244 754.3
D 10 253 7170282 9501.94 3329 3244 754.3
D 12 227 2547919 3373.69 3329 3244 754.3

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