ASTROSAT CZTI

Data Quality Report

Orbit 20161217_A02_170T02_9000000892_level2

Creation date: 2017-09-21T14:31:50.406910
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/AS1A02_170T02_9000000892cztM0_level2.evt modeM0/AS1A02_170T02_9000000892cztM0_level2_quad_clean.evt
Size (bytes)2,772,610,560498,836,160
Size2.6 GB 475.7 MB
Events in quadrant A15,535,2793,270,002
Events in quadrant B18,509,4793,267,286
Events in quadrant C15,998,1163,228,552
Events in quadrant D31,584,2522,956,739

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07060
B07060
C07060
D07060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710770
B0785270
C0729170
D01181210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A347256711.932325%
B3472513103.772498%
C347254391.264219%
D3472530518.786177%

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 38190 34733 4 4 0.01% 0.01%
B 38190 34733 368 368 0.96% 1.06%
C 38190 34733 48 48 0.13% 0.14%
D 38190 34732 2124 2124 5.56% 6.12%

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 8 15 118879 143.97 3992 3901 798.6
A 0 226 38758 43.64 3992 3901 798.6
A 12 194 37961 42.65 3992 3901 798.6
B 0 219 1064390 1423.86 3983 3882 744.8
B 4 48 447515 595.63 3983 3882 744.8
B 3 220 384087 510.47 3983 3882 744.8
C 9 247 753295 843.53 3877 3878 888.4
C 9 54 45410 46.75 3877 3878 888.4
C 13 61 30714 30.21 3877 3878 888.4
D 8 195 9782761 10671.36 3781 3656 916.4
D 2 33 1822744 1985.06 3781 3656 916.4
D 2 63 1604114 1746.49 3781 3656 916.4

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