ASTROSAT CZTI

Data Quality Report

Orbit 20181124_A05_004T04_9000002534_level2

Creation date: 2018-11-26T18:10:50.359923
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_004T04_9000002534cztM0_level2_bc.evt modeM0/AS1A05_004T04_9000002534cztM0_level2_quad_clean.evt
Size (bytes)2,453,808,960918,403,200
Size2.3 GB 875.9 MB
Events in quadrant A14,279,2645,869,515
Events in quadrant B15,980,8835,943,145
Events in quadrant C21,114,2435,630,595
Events in quadrant D18,079,6225,486,244

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014540
B014540
C014540
D014540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01465240
B01520670
C01715690
D01608770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A712869431.322840%
B7128611291.583761%
C7128614592.046685%
D7128617252.419830%

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 82331 71286 1 1 0.00% 0.00%
B 82331 71282 2 2 0.00% 0.00%
C 82331 71285 4 4 0.00% 0.01%
D 82331 71284 80 80 0.10% 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 4 2 105763 128.11 3680 3614 797.3
A 12 189 44859 51.73 3680 3614 797.3
A 12 194 24261 25.9 3680 3614 797.3
B 0 189 430816 612.63 3727 3632 697.3
B 7 220 262209 370.83 3727 3632 697.3
B 0 219 242330 342.32 3727 3632 697.3
C 3 233 6934485 8301.02 3552 3528 835.0
C 9 54 348877 413.61 3552 3528 835.0
C 7 247 121767 141.61 3552 3528 835.0
D 5 222 2002852 2418.27 3600 3476 826.8
D 10 70 1003121 1209.08 3600 3476 826.8
D 1 52 539243 648.02 3600 3476 826.8

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