ASTROSAT CZTI

Data Quality Report

Orbit 20170808_A03_044T04_9000001448_level2

Creation date: 2017-09-24T14:40:45.061045
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/AS1A03_044T04_9000001448cztM0_level2.evt modeM0/AS1A03_044T04_9000001448cztM0_level2_quad_clean.evt
Size (bytes)936,132,480167,402,880
Size892.8 MB 159.6 MB
Events in quadrant A6,529,2031,027,320
Events in quadrant B6,693,4941,047,566
Events in quadrant C6,336,8351,034,215
Events in quadrant D7,824,679977,654

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B12733597094080
C12733597094080
D12733597094080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0294910
B0296170
C0292790
D0326210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B02620
C02920
D03500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A142221320.928140%
B141931571.106179%
C14317630.440036%
D138961941.396085%

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 23142 16160 3 3 0.01% 0.02%
B 23142 16226 2 2 0.01% 0.01%
C 23142 16329 3 3 0.01% 0.02%
D 23142 15968 84 84 0.36% 0.53%

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 8 102615 300.66 1652 1614 335.9
A 8 15 30567 86.19 1652 1614 335.9
A 4 2 27272 76.38 1652 1614 335.9
B 0 214 113328 349.8 1654 1609 319.4
B 0 219 44972 135.77 1654 1609 319.4
B 4 239 42370 127.63 1654 1609 319.4
C 14 234 17340 41.75 1616 1623 376.5
C 13 61 11970 27.48 1616 1623 376.5
C 14 67 11615 26.54 1616 1623 376.5
D 8 195 751928 1912.17 1552 1512 392.4
D 10 199 481335 1222.66 1552 1512 392.4
D 2 152 231882 587.01 1552 1512 392.4

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