ASTROSAT CZTI

Data Quality Report

Orbit 20180806_G08_033T01_9000002278_level2

Creation date: 2018-08-07T10:46:34.946643
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/AS1G08_033T01_9000002278cztM0_level2_bc.evt modeM0/AS1G08_033T01_9000002278cztM0_level2_quad_clean.evt
Size (bytes)760,847,040272,016,000
Size725.6 MB 259.4 MB
Events in quadrant A4,779,4731,778,618
Events in quadrant B4,424,7591,805,960
Events in quadrant C4,619,3581,777,371
Events in quadrant D7,998,1941,647,722

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0417530
B0394150
C0388610
D0501880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178355603.139893%
B178353131.754976%
C178351600.897112%
D1783514808.298290%

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 22061 17837 17 17 0.08% 0.10%
B 22061 17836 6 6 0.03% 0.03%
C 22061 17836 0 0 0.00% 0.00%
D 22061 17836 869 869 3.94% 4.87%

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 14 238 469514 2225.97 961 945 210.5
A 4 2 190610 901.01 961 945 210.5
A 13 248 152222 718.65 961 945 210.5
B 4 142 142114 759.49 972 950 185.9
B 10 245 94096 501.15 972 950 185.9
B 0 189 81528 433.53 972 950 185.9
C 3 233 933561 4487.31 936 926 207.8
C 10 22 12005 53.31 936 926 207.8
C 7 247 9588 41.68 936 926 207.8
D 1 52 3034040 14025.51 925 892 216.3
D 5 222 454878 2099.27 925 892 216.3
D 2 33 397712 1834.93 925 892 216.3

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