ASTROSAT CZTI

Data Quality Report

Orbit 20190525_A05_104T08_9000002954_level2

Creation date: 2019-05-27T10:43:31.454473
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_104T08_9000002954cztM0_level2_bc.evt modeM0/AS1A05_104T08_9000002954cztM0_level2_quad_clean.evt
Size (bytes)1,585,897,920399,225,600
Size1.5 GB 380.7 MB
Events in quadrant A7,476,4492,543,660
Events in quadrant B7,639,1392,602,804
Events in quadrant C19,061,1532,301,308
Events in quadrant D11,561,0992,335,211

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0704030
B0711830
C01151790
D0839290

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06840
B06840
C06840
D06840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A335782770.824945%
B335783731.110846%
C33578568316.924772%
D3357812213.636309%

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 40858 33580 21 21 0.05% 0.06%
B 40858 33578 22 22 0.05% 0.07%
C 40858 33579 788 788 1.93% 2.35%
D 40858 33577 462 462 1.13% 1.38%

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 206628 517.77 1844 1810 395.6
A 9 143 56514 138.29 1844 1810 395.6
A 0 23 43800 106.15 1844 1810 395.6
B 7 220 119888 337.08 1879 1836 350.2
B 4 216 91864 257.06 1879 1836 350.2
B 3 64 62130 172.16 1879 1836 350.2
C 3 233 12653530 32911.75 1648 1642 384.4
C 7 247 30642 75.44 1648 1642 384.4
C 4 175 28084 68.78 1648 1642 384.4
D 7 238 3006120 7347.11 1775 1712 408.9
D 1 52 987306 2410.21 1775 1712 408.9
D 12 218 459060 1118.42 1775 1712 408.9

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