ASTROSAT CZTI

Data Quality Report

Orbit 20220313_A11_065T21_9000005000_level2

Creation date: 2022-03-16T12:39:04.851468
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A11_065T21_9000005000cztM0_level2_bc.evt modeM0/AS1A11_065T21_9000005000cztM0_level2_quad_clean.evt
Size (bytes)705,663,360258,756,480
Size673.0 MB 246.8 MB
Events in quadrant A3,455,5441,721,263
Events in quadrant B4,432,7011,709,758
Events in quadrant C4,161,0341,707,075
Events in quadrant D8,221,5291,590,336

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332260
B0376390
C0340490
D0479660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16088230.142964%
B160885003.107907%
C160881621.006962%
D160883972.467678%

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 22270 16092 1 1 0.00% 0.01%
B 22270 16088 25 25 0.11% 0.16%
C 22270 16088 20 20 0.09% 0.12%
D 22270 16089 130 130 0.58% 0.81%

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 10 83 130506 702.57 819 804 184.6
A 15 169 82771 444.0 819 804 184.6
A 13 6 36703 194.46 819 804 184.6
B 5 172 989540 6045.01 810 792 163.6
B 5 255 113305 687.88 810 792 163.6
B 0 190 75703 457.99 810 792 163.6
C 15 214 638109 3425.53 800 794 186.0
C 0 10 303617 1627.66 800 794 186.0
C 14 67 47625 251.71 800 794 186.0
D 8 195 2550176 13263.96 794 768 192.2
D 13 249 722584 3755.44 794 768 192.2
D 1 52 280078 1453.18 794 768 192.2

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