ASTROSAT CZTI

Data Quality Report

Orbit 20190201_T03_080T01_9000002686_level2

Creation date: 2019-02-02T12:24:00.123341
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/AS1T03_080T01_9000002686cztM0_level2_bc.evt modeM0/AS1T03_080T01_9000002686cztM0_level2_quad_clean.evt
Size (bytes)2,209,052,1601,195,153,920
Size2.1 GB 1.1 GB
Events in quadrant A13,402,1868,205,174
Events in quadrant B13,658,2958,162,311
Events in quadrant C12,452,3877,948,470
Events in quadrant D23,244,2267,719,041

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012360
B012360
C012360
D012360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01277160
B01283050
C01252970
D01619200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A607908081.329166%
B607908551.406481%
C607908861.457477%
D6079039716.532324%

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 71260 60791 14 14 0.02% 0.02%
B 71260 60789 22 22 0.03% 0.04%
C 71260 60789 0 0 0.00% 0.00%
D 71260 60788 1154 1154 1.62% 1.90%

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 343828 472.02 3279 3231 721.6
A 15 174 258456 353.71 3279 3231 721.6
A 14 4 150073 203.5 3279 3231 721.6
B 0 189 261272 417.61 3243 3163 618.1
B 3 64 211553 337.17 3243 3163 618.1
B 7 220 135083 213.44 3243 3163 618.1
C 3 233 299976 387.39 3138 3112 766.3
C 0 207 31953 37.64 3138 3112 766.3
C 9 160 22562 25.38 3138 3112 766.3
D 11 176 5782541 7502.87 3178 3069 770.3
D 7 238 3764403 4882.93 3178 3069 770.3
D 1 52 641955 829.4 3178 3069 770.3

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