ASTROSAT CZTI

Data Quality Report

Orbit 20190403_A06_003T05_9000002830_level2

Creation date: 2019-04-08T13:01:34.836046
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/AS1A06_003T05_9000002830cztM0_level2_bc.evt modeM0/AS1A06_003T05_9000002830cztM0_level2_quad_clean.evt
Size (bytes)5,735,076,4801,626,166,080
Size5.3 GB 1.5 GB
Events in quadrant A47,409,3119,979,492
Events in quadrant B32,987,10910,617,860
Events in quadrant C29,752,98210,075,554
Events in quadrant D54,385,2579,371,152

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027320
B027320
C027320
D027320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03966020
B02965480
C02872520
D03937150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1343631678412.491534%
B13436533282.476835%
C13436528992.157556%
D134364104517.778125%

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 155725 134323 322 322 0.21% 0.24%
B 155725 134371 112 112 0.07% 0.08%
C 155725 134370 15 15 0.01% 0.01%
D 155725 134332 721 721 0.46% 0.54%

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 14 235 21330661 14821.62 6696 6582 1438.7
A 9 143 169641 113.34 6696 6582 1438.7
A 13 254 102818 66.89 6696 6582 1438.7
B 3 112 2483883 1843.58 7197 7012 1343.5
B 7 220 1124344 831.65 7197 7012 1343.5
B 0 189 500722 367.48 7197 7012 1343.5
C 3 233 3125622 1964.11 6834 6809 1587.9
C 5 112 180174 109.18 6834 6809 1587.9
C 9 54 61259 34.29 6834 6809 1587.9
D 7 238 15895104 10315.97 6715 6475 1540.2
D 1 52 9603180 6230.83 6715 6475 1540.2
D 2 233 1961004 1269.01 6715 6475 1540.2

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