ASTROSAT CZTI

Data Quality Report

Orbit 46648

Creation date: 2024-06-27T23:25:53.121981
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_039T01_9000006246_46648cztM0_level2.fits modeM0/AS1A13_039T01_9000006246_46648cztM0_level2_quad_clean.evt
Size (bytes)473,244,480106,136,640
Size451.3 MB 101.2 MB
Events in quadrant A6,392,772694,115
Events in quadrant B4,208,968724,932
Events in quadrant C2,815,816711,112
Events in quadrant D3,600,512634,420

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02332212
B0168342
C0133428
D0155162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64382343.634669%
B64432624.066429%
C6440340.527950%
D64431492.312587%

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 8797 6443 118 118 1.34% 1.83%
B 8798 6445 156 156 1.77% 2.42%
C 8798 6444 16 16 0.18% 0.25%
D 8798 6445 135 135 1.53% 2.09%

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 3472499 24810.91 678 664 139.9
A 0 247 191808 1365.98 678 664 139.9
A 13 248 34853 244.33 678 664 139.9
B 5 255 656516 5022.5 684 664 130.6
B 0 189 257870 1969.68 684 664 130.6
B 5 32 208453 1591.24 684 664 130.6
C 12 250 48646 302.4 681 686 158.6
C 12 249 46052 286.04 681 686 158.6
C 14 254 28404 174.77 681 686 158.6
D 13 249 401937 2348.41 669 645 170.9
D 1 52 205653 1199.73 669 645 170.9
D 12 128 109199 635.27 669 645 170.9

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