ASTROSAT CZTI

Data Quality Report

Orbit 36817

Creation date: 2024-06-27T21:32:00.098231
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_075T01_9000005244_36817cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36817cztM0_level2_quad_clean.evt
Size (bytes)775,267,20062,651,520
Size739.4 MB 59.7 MB
Events in quadrant A2,904,780427,316
Events in quadrant B14,010,802205,747
Events in quadrant C3,033,768433,522
Events in quadrant D3,126,296412,468

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123413
B0457122
C0126422
D0134372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A595770.117509%
B5957496383.313749%
C5957270.453248%
D5957721.208662%

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 7240 5958 3 3 0.04% 0.05%
B 7240 5957 4833 4833 66.75% 81.13%
C 7240 5958 23 23 0.32% 0.39%
D 7240 5958 66 66 0.91% 1.11%

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 243517 1797.68 666 651 135.1
A 9 143 41891 305.26 666 651 135.1
A 7 16 17527 124.92 666 651 135.1
B 12 1 12239450 182482.41 346 338 67.1
B 5 172 225582 3358.34 346 338 67.1
B 0 190 42238 624.72 346 338 67.1
C 15 214 256605 1690.52 649 653 151.4
C 14 254 149487 983.02 649 653 151.4
C 0 207 44432 289.15 649 653 151.4
D 2 153 206526 1303.34 646 627 158.0
D 12 233 132109 832.28 646 627 158.0
D 2 250 88759 557.87 646 627 158.0

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