ASTROSAT CZTI

Data Quality Report

Orbit 20180602_G08_034T02_9000002136_level2

Creation date: 2021-08-28T19:33:11.852176
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/AS1G08_034T02_9000002136cztM0_level2_bc.evt modeM0/AS1G08_034T02_9000002136cztM0_level2_quad_clean.evt
Size (bytes)1,888,937,280731,053,440
Size1.8 GB 697.2 MB
Events in quadrant A12,323,1554,644,797
Events in quadrant B13,869,2944,709,374
Events in quadrant C12,925,8784,648,997
Events in quadrant D14,459,3614,489,213

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01172400
B01212050
C01141840
D01258490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010880
B010880
C010880
D010880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0950
B0950
C0950
D0950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5320712542.356833%
B5320710561.984701%
C532074730.888981%
D5320717693.324751%

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 80942 53208 9 9 0.01% 0.02%
B 80942 53211 27 27 0.03% 0.05%
C 80942 53208 3 3 0.00% 0.01%
D 80942 53210 57 57 0.07% 0.11%

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 12 189 572544 929.83 2791 2736 612.8
A 4 2 262943 424.61 2791 2736 612.8
A 0 23 250356 404.07 2791 2736 612.8
B 10 245 568658 1067.29 2820 2745 530.2
B 0 189 490406 919.71 2820 2745 530.2
B 15 222 380398 712.24 2820 2745 530.2
C 3 233 1619491 2697.16 2748 2713 599.4
C 0 207 509445 845.35 2748 2713 599.4
C 8 128 20309 29.35 2748 2713 599.4
D 10 199 1247301 1924.1 2737 2655 646.9
D 2 120 1226832 1892.46 2737 2655 646.9
D 12 110 743015 1144.52 2737 2655 646.9

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