ASTROSAT CZTI

Data Quality Report

Orbit 20190115_A05_085T01_9000002658_level2

Creation date: 2019-01-18T14:28:12.615352
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_085T01_9000002658cztM0_level2_bc.evt modeM0/AS1A05_085T01_9000002658cztM0_level2_quad_clean.evt
Size (bytes)4,851,077,7601,950,128,640
Size4.5 GB 1.8 GB
Events in quadrant A29,781,71812,574,550
Events in quadrant B30,398,24312,686,266
Events in quadrant C29,744,22912,148,326
Events in quadrant D47,026,01011,641,826

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029800
B029800
C029800
D029800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02330
B02330
C02330
D02330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03031110
B03046490
C03033910
D03698570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14622116881.154417%
B14622120811.423188%
C14622123221.588007%
D14622178315.355592%

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 169611 146215 11 11 0.01% 0.01%
B 169611 146215 3 3 0.00% 0.00%
C 169611 146220 1 1 0.00% 0.00%
D 169611 146218 1250 1250 0.74% 0.85%

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 6 16 496056 292.11 7606 7450 1672.7
A 15 174 154463 87.89 7606 7450 1672.7
A 0 226 49549 25.17 7606 7450 1672.7
B 15 222 231664 154.01 7704 7491 1455.6
B 0 183 224980 149.41 7704 7491 1455.6
B 0 219 89649 56.44 7704 7491 1455.6
C 3 233 740848 428.41 7338 7282 1712.3
C 5 218 557303 321.22 7338 7282 1712.3
C 5 219 104210 56.61 7338 7282 1712.3
D 7 238 16476722 8817.79 7217 7006 1867.8
D 1 52 830379 440.83 7217 7006 1867.8
D 12 227 680684 360.68 7217 7006 1867.8

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