ASTROSAT CZTI

Data Quality Report

Orbit 20170713_A03_068T01_9000001380_level2

Creation date: 2017-09-24T10:38:08.817551
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_068T01_9000001380cztM0_level2.evt modeM0/AS1A03_068T01_9000001380cztM0_level2_quad_clean.evt
Size (bytes)3,050,308,800512,640,000
Size2.8 GB 488.9 MB
Events in quadrant A21,268,5893,168,135
Events in quadrant B21,190,0823,232,216
Events in quadrant C22,153,1563,088,329
Events in quadrant D24,766,3922,988,031

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0918830
B0914890
C0959740
D01027370

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0770
C0800
D0780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09320
B09340
C09320
D09120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A444564491.009987%
B444325591.258102%
C444798061.812091%
D4403710342.348026%

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 56896 45105 0 0 0.00% 0.00%
B 56896 45080 5 5 0.01% 0.01%
C 56896 45123 323 323 0.57% 0.72%
D 56896 44550 639 639 1.12% 1.43%

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 1 162 185861 164.92 5438 5331 1094.7
A 1 178 70723 59.74 5438 5331 1094.7
A 1 161 60698 50.58 5438 5331 1094.7
B 12 111 122795 113.85 5434 5306 1031.9
B 11 111 100335 92.09 5434 5306 1031.9
B 14 111 80313 72.69 5434 5306 1031.9
C 14 234 1604357 1323.71 5236 5265 1208.0
C 9 68 111500 87.94 5236 5265 1208.0
C 13 61 38835 27.79 5236 5265 1208.0
D 1 52 2885697 2227.77 5138 5024 1293.1
D 8 195 1528711 1178.34 5138 5024 1293.1
D 12 233 422937 323.19 5138 5024 1293.1

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