ASTROSAT CZTI

Data Quality Report

Orbit 17158

Creation date: 2024-06-27T17:32:57.865296
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/AS1T03_059T01_9000002546_17158cztM0_level2.evt modeM0/AS1T03_059T01_9000002546_17158cztM0_level2_quad_clean.evt
Size (bytes)365,754,24071,781,120
Size348.8 MB 68.5 MB
Events in quadrant A2,691,368447,793
Events in quadrant B2,697,023453,426
Events in quadrant C2,739,889431,481
Events in quadrant D2,550,158432,083

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120130
B0119420
C0119662
D0118980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5851310.529824%
B5852390.666439%
C5851591.008375%
D5851140.239275%

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 5851 5851 0 0 0.00% 0.00%
B 5852 5852 0 0 0.00% 0.00%
C 5851 5851 1 1 0.02% 0.02%
D 5851 5851 2 2 0.03% 0.03%

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 12 189 27156 189.71 688 672 139.6
A 12 96 21391 148.41 688 672 139.6
A 0 226 5855 37.13 688 672 139.6
B 12 111 16674 118.27 690 672 135.3
B 11 111 14403 101.49 690 672 135.3
B 14 111 12530 87.64 690 672 135.3
C 14 238 100696 638.83 662 667 156.6
C 3 233 54386 343.07 662 667 156.6
C 13 61 4692 25.71 662 667 156.6
D 2 234 24787 148.36 669 649 162.7
D 2 152 12363 72.0 669 649 162.7
D 12 235 8214 46.49 669 649 162.7

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