ASTROSAT CZTI

Data Quality Report

Orbit 20180430_A04_075T05_9000002066_level2

Creation date: 2018-05-02T11:47:39.131136
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/AS1A04_075T05_9000002066cztM0_level2_bc.evt modeM0/AS1A04_075T05_9000002066cztM0_level2_quad_clean.evt
Size (bytes)548,968,320190,402,560
Size523.5 MB 181.6 MB
Events in quadrant A2,847,7631,246,165
Events in quadrant B3,166,0621,260,673
Events in quadrant C2,994,3191,232,246
Events in quadrant D6,739,2241,142,862

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271670
B0283290
C0271150
D0393020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128071260.983837%
B128071581.233700%
C12807730.570001%
D128077846.121652%

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 15062 12807 1 1 0.01% 0.01%
B 15062 12807 10 10 0.07% 0.08%
C 15062 12807 0 0 0.00% 0.00%
D 15062 12807 380 380 2.52% 2.97%

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 161521 1070.74 681 666 150.2
A 12 189 22114 142.77 681 666 150.2
A 1 162 20901 134.7 681 666 150.2
B 0 189 96472 737.02 687 671 130.0
B 10 245 94274 720.11 687 671 130.0
B 0 219 83935 640.57 687 671 130.0
C 3 233 364915 2443.72 666 656 149.1
C 0 207 23467 153.03 666 656 149.1
C 14 234 6387 38.45 666 656 149.1
D 1 52 1703349 10675.47 650 630 159.5
D 8 195 645470 4042.93 650 630 159.5
D 12 110 553005 3463.2 650 630 159.5

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