ASTROSAT CZTI

Data Quality Report

Orbit 20190519_T03_037T01_9000002930_level2

Creation date: 2019-05-20T11:26:28.648629
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_037T01_9000002930cztM0_level2_bc.evt modeM0/AS1T03_037T01_9000002930cztM0_level2_quad_clean.evt
Size (bytes)992,211,840413,723,520
Size946.2 MB 394.6 MB
Events in quadrant A6,173,1642,689,052
Events in quadrant B7,278,7212,740,131
Events in quadrant C6,406,6562,650,855
Events in quadrant D8,328,3992,577,561

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570790
B0613220
C0584060
D0644880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05560
B05560
C05560
D05560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A272503231.185321%
B272505922.172477%
C272504981.827523%
D272506692.455046%

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 32595 27251 20 20 0.06% 0.07%
B 32595 27249 26 26 0.08% 0.10%
C 32595 27245 0 0 0.00% 0.00%
D 32595 27248 86 86 0.26% 0.32%

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 5 16 296567 932.39 1478 1455 316.5
A 11 29 162335 508.29 1478 1455 316.5
A 13 254 18569 54.07 1478 1455 316.5
B 3 112 946852 3370.2 1498 1463 280.5
B 0 198 170152 601.36 1498 1463 280.5
B 4 216 101404 356.28 1498 1463 280.5
C 3 233 537355 1566.71 1455 1452 342.1
C 9 221 231182 671.62 1455 1452 342.1
C 8 208 27354 75.72 1455 1452 342.1
D 1 52 1066285 3155.26 1468 1422 337.5
D 12 218 737114 2179.9 1468 1422 337.5
D 1 20 531245 1569.9 1468 1422 337.5

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