ASTROSAT CZTI

Data Quality Report

Orbit 38286

Creation date: 2024-06-27T21:50:45.088564
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/AS1A07_145T01_9000005370_38286cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38286cztM0_level2_quad_clean.evt
Size (bytes)526,893,12086,232,960
Size502.5 MB 82.2 MB
Events in quadrant A2,810,421638,843
Events in quadrant B3,080,788647,099
Events in quadrant C2,948,489619,849
Events in quadrant D10,256,504337,810

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114792
B0125921
C0118871
D0340561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A524680.152497%
B52461132.154022%
C5246420.800610%
D5246275952.592451%

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 7129 5247 3 3 0.04% 0.06%
B 7129 5247 90 90 1.26% 1.72%
C 7129 5247 36 36 0.50% 0.69%
D 7129 5247 2381 2381 33.40% 45.38%

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 339588 2796.6 600 588 121.2
A 12 16 91918 753.43 600 588 121.2
A 9 143 19535 156.3 600 588 121.2
B 5 184 431363 3796.39 598 581 113.5
B 5 172 240768 2116.71 598 581 113.5
B 15 85 23489 201.88 598 581 113.5
C 9 236 301634 2193.75 592 596 137.2
C 15 214 216368 1572.4 592 596 137.2
C 15 208 70898 512.31 592 596 137.2
D 2 16 5744826 48019.01 494 480 119.6
D 12 235 1809255 15120.19 494 480 119.6
D 12 233 333866 2786.89 494 480 119.6

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