ASTROSAT CZTI

Data Quality Report

Orbit 20170219_T01_155T01_9000001042_level2

Creation date: 2017-09-23T05:32:35.461333
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/AS1T01_155T01_9000001042cztM0_level2.evt modeM0/AS1T01_155T01_9000001042cztM0_level2_quad_clean.evt
Size (bytes)494,271,360110,520,000
Size471.4 MB 105.4 MB
Events in quadrant A3,266,025747,485
Events in quadrant B3,293,091749,495
Events in quadrant C4,421,415714,096
Events in quadrant D3,561,649697,490

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136260
B0137220
C0172020
D0145870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62861472.338530%
B62861322.099905%
C62862694.279351%
D62861552.465797%

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 8726 6286 2 2 0.02% 0.03%
B 8726 6287 1 1 0.01% 0.02%
C 8726 6286 133 133 1.52% 2.12%
D 8726 6286 30 30 0.34% 0.48%

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 3 1 37348 215.07 833 818 169.9
A 1 162 9912 53.54 833 818 169.9
A 0 226 7849 41.39 833 818 169.9
B 0 214 29730 182.42 830 813 158.5
B 0 230 19999 121.03 830 813 158.5
B 0 219 18622 112.35 830 813 158.5
C 9 68 1316383 7157.5 791 798 183.8
C 10 22 10924 55.09 791 798 183.8
C 13 61 6053 28.59 791 798 183.8
D 2 152 223814 1111.08 807 784 200.7
D 2 244 133212 659.73 807 784 200.7
D 2 14 81370 401.46 807 784 200.7

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