ASTROSAT CZTI

Data Quality Report

Orbit 20180315_A04_101T01_9000001984_level2

Creation date: 2018-03-23T11:42:59.966207
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/AS1A04_101T01_9000001984cztM0_level2_bc.evt modeM0/AS1A04_101T01_9000001984cztM0_level2_quad_clean.evt
Size (bytes)3,340,920,9601,284,071,040
Size3.1 GB 1.2 GB
Events in quadrant A20,796,3728,075,186
Events in quadrant B23,276,6258,306,163
Events in quadrant C21,292,7658,081,799
Events in quadrant D29,047,9087,625,885

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02089390
B02169870
C02083770
D02396380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020220
B020220
C020220
D020220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9928711921.200560%
B9928719121.925730%
C992869110.917551%
D9928826372.655910%

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 125477 99294 9 9 0.01% 0.01%
B 125477 99294 71 71 0.06% 0.07%
C 125477 99293 21 21 0.02% 0.02%
D 125477 99296 101 101 0.08% 0.10%

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 8 15 598911 530.73 5145 5037 1119.0
A 1 162 195821 170.5 5145 5037 1119.0
A 15 69 110355 94.12 5145 5037 1119.0
B 3 64 724005 722.81 5254 5116 994.6
B 0 219 506092 503.71 5254 5116 994.6
B 4 142 336922 333.62 5254 5116 994.6
C 15 208 598599 535.86 5079 5014 1107.7
C 3 233 496754 443.92 5079 5014 1107.7
C 6 96 275468 244.15 5079 5014 1107.7
D 1 52 6577638 5708.25 5021 4838 1151.5
D 8 195 1527854 1322.69 5021 4838 1151.5
D 5 222 518864 446.41 5021 4838 1151.5

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