ASTROSAT CZTI

Data Quality Report

Orbit 20190818_A05_075T06_9000003104_level2

Creation date: 2019-08-20T12:15:44.799429
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_075T06_9000003104cztM0_level2_bc.evt modeM0/AS1A05_075T06_9000003104cztM0_level2_quad_clean.evt
Size (bytes)2,012,806,080788,567,040
Size1.9 GB 752.0 MB
Events in quadrant A11,793,4115,118,611
Events in quadrant B15,287,8425,100,090
Events in quadrant C12,694,8164,904,233
Events in quadrant D17,230,2884,787,534

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011820
B011820
C011820
D011820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0890
B0890
C0890
D0890

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01190110
B01330110
C01237610
D01358300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A579406341.094235%
B5794014902.571626%
C5794013462.323093%
D5794013492.328271%

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 66925 57942 0 0 0.00% 0.00%
B 66925 57941 19 19 0.03% 0.03%
C 66925 57943 100 100 0.15% 0.17%
D 66925 57943 258 258 0.39% 0.45%

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 13 254 58161 82.83 3031 2972 666.3
A 15 192 54347 77.11 3031 2972 666.3
A 10 229 20439 26.22 3031 2972 666.3
B 7 220 1061834 1834.07 3035 2963 577.3
B 0 182 981515 1694.95 3035 2963 577.3
B 0 189 492037 847.12 3035 2963 577.3
C 9 54 1355036 1969.3 2909 2894 686.6
C 10 91 104280 147.66 2909 2894 686.6
C 13 250 18009 22.01 2909 2894 686.6
D 1 52 2140833 3089.49 2976 2878 692.0
D 1 20 781213 1124.75 2976 2878 692.0
D 1 239 679204 977.34 2976 2878 692.0

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