ASTROSAT CZTI

Data Quality Report

Orbit 44501

Creation date: 2024-06-27T23:03:52.922614
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/AS1A13_072T03_9000006000_44501cztM0_level2.fits modeM0/AS1A13_072T03_9000006000_44501cztM0_level2_quad_clean.evt
Size (bytes)669,490,56097,228,800
Size638.5 MB 92.7 MB
Events in quadrant A4,588,481742,668
Events in quadrant B10,787,403428,118
Events in quadrant C3,309,976729,799
Events in quadrant D5,590,350588,478

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188941
B0364547
C0143541
D0210761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6524661.011649%
B6524316448.497854%
C6524420.643777%
D652479312.155120%

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 7704 6525 7 7 0.09% 0.11%
B 7704 6524 2646 2646 34.35% 40.56%
C 7704 6525 28 28 0.36% 0.43%
D 7704 6525 750 750 9.74% 11.49%

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 1707398 11221.02 732 718 152.1
A 13 248 45786 296.31 732 718 152.1
A 7 191 12070 74.64 732 718 152.1
B 5 235 8286087 72820.82 584 567 113.8
B 5 172 83438 728.35 584 567 113.8
B 5 255 63164 550.16 584 567 113.8
C 14 254 245934 1466.23 714 717 167.2
C 3 233 211843 1262.39 714 717 167.2
C 15 1 34157 199.95 714 717 167.2
D 2 249 1961584 11671.9 675 656 168.0
D 13 187 733849 4364.14 675 656 168.0
D 1 52 166010 984.23 675 656 168.0

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