ASTROSAT CZTI

Data Quality Report

Orbit 20191013_A07_118T01_9000003232_level2

Creation date: 2019-10-16T11:17:28.292576
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/AS1A07_118T01_9000003232cztM0_level2_bc.evt modeM0/AS1A07_118T01_9000003232cztM0_level2_quad_clean.evt
Size (bytes)3,850,683,8401,336,924,800
Size3.6 GB 1.2 GB
Events in quadrant A23,168,0968,569,744
Events in quadrant B24,877,3258,722,397
Events in quadrant C21,265,7658,455,075
Events in quadrant D40,008,4737,408,293

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021740
B021740
C021740
D021740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02259540
B02317540
C02223700
D03184960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10704414361.341504%
B10704420371.902956%
C10704418481.726393%
D1070441241511.598034%

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 122805 107034 33 33 0.03% 0.03%
B 122805 107033 110 110 0.09% 0.10%
C 122805 107033 3 3 0.00% 0.00%
D 122805 106835 1511 1511 1.23% 1.41%

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 4 2 561154 453.6 5654 5541 1224.9
A 5 16 470886 379.91 5654 5541 1224.9
A 6 16 206718 164.24 5654 5541 1224.9
B 3 64 1394421 1296.52 5741 5592 1071.2
B 0 230 388503 357.46 5741 5592 1071.2
B 0 190 340343 312.5 5741 5592 1071.2
C 0 10 64282 45.93 5489 5450 1281.0
C 5 112 49671 34.52 5489 5450 1281.0
C 13 61 32029 20.75 5489 5450 1281.0
D 1 52 14016820 10953.06 5102 4946 1279.3
D 7 238 2798285 2183.55 5102 4946 1279.3
D 2 136 880343 684.3 5102 4946 1279.3

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