ASTROSAT CZTI

Data Quality Report

Orbit 20190303_A05_104T02_9000002752_level2

Creation date: 2019-03-04T12:12:20.044779
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/AS1A05_104T02_9000002752cztM0_level2_bc.evt modeM0/AS1A05_104T02_9000002752cztM0_level2_quad_clean.evt
Size (bytes)661,331,520219,669,120
Size630.7 MB 209.5 MB
Events in quadrant A4,699,8441,450,199
Events in quadrant B3,494,9611,490,772
Events in quadrant C2,997,2971,413,347
Events in quadrant D7,854,4101,309,879

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371160
B0317200
C0303240
D0484050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A143248736.094666%
B143242621.829098%
C143242441.703435%
D14324151710.590617%

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 17764 14321 104 104 0.59% 0.73%
B 17764 14322 2 2 0.01% 0.01%
C 17764 14321 1 1 0.01% 0.01%
D 17764 14321 154 154 0.87% 1.08%

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 1638790 9525.17 790 774 172.0
A 13 254 21986 123.35 790 774 172.0
A 14 111 10448 56.25 790 774 172.0
B 3 64 214012 1395.3 811 793 152.8
B 15 222 68727 444.56 811 793 152.8
B 4 80 50562 325.69 811 793 152.8
C 0 207 26887 145.41 772 768 179.6
C 13 61 4584 21.24 772 768 179.6
C 3 233 3532 15.39 772 768 179.6
D 7 238 3572023 20067.74 764 738 178.0
D 1 52 1202505 6752.96 764 738 178.0
D 2 234 59037 327.59 764 738 178.0

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