ASTROSAT CZTI

Data Quality Report

Orbit 20210424_A10_097T03_9000004336_level2

Creation date: 2021-04-28T16:00:50.459742
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/AS1A10_097T03_9000004336cztM0_level2_bc.evt modeM0/AS1A10_097T03_9000004336cztM0_level2_quad_clean.evt
Size (bytes)11,287,514,8802,565,685,440
Size10.5 GB 2.4 GB
Events in quadrant A42,831,99616,810,057
Events in quadrant B91,928,75216,798,987
Events in quadrant C137,509,68815,184,563
Events in quadrant D57,148,68616,359,776

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03010
B03010
C03010
D03010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037240
B037240
C037240
D037240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03946780
B05604040
C07252940
D04307460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18328134231.867624%
B18328045232.467809%
C1832803973321.678852%
D18328132291.761776%

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 213122 183276 136 136 0.06% 0.07%
B 213122 183280 16 16 0.01% 0.01%
C 213122 183267 5766 5766 2.71% 3.15%
D 213122 183288 393 393 0.18% 0.21%

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 3382978 1570.36 10065 9916 2148.0
A 13 254 328593 148.36 10065 9916 2148.0
A 8 192 326695 147.48 10065 9916 2148.0
B 6 159 51475797 27255.7 10074 9836 1888.3
B 0 190 572057 297.74 10074 9836 1888.3
B 3 64 321609 165.11 10074 9836 1888.3
C 3 233 101605002 47489.6 9055 9037 2139.3
C 14 254 482457 221.29 9055 9037 2139.3
C 2 114 324225 147.33 9055 9037 2139.3
D 8 195 5862213 2477.94 10017 9760 2361.8
D 12 227 3416717 1442.51 10017 9760 2361.8
D 1 52 2372843 1000.53 10017 9760 2361.8

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