ASTROSAT CZTI

Data Quality Report

Orbit 46383

Creation date: 2024-06-27T23:22:29.471063
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_070T06_9000006202_46383cztM0_level2.fits modeM0/AS1A13_070T06_9000006202_46383cztM0_level2_quad_clean.evt
Size (bytes)520,715,520106,551,360
Size496.6 MB 101.6 MB
Events in quadrant A6,102,296694,132
Events in quadrant B5,163,215691,723
Events in quadrant C2,889,290726,861
Events in quadrant D4,598,646644,481

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224111
B0200641
C0137051
D0184541

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67251902.825279%
B67256679.918216%
C6724190.282570%
D67242443.628792%

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 7725 6726 39 39 0.50% 0.58%
B 7725 6726 396 396 5.13% 5.89%
C 7724 6725 10 10 0.13% 0.15%
D 7724 6725 181 181 2.34% 2.69%

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 3139647 21021.11 721 705 149.3
A 0 247 143958 959.35 721 705 149.3
A 0 226 13971 88.84 721 705 149.3
B 5 255 1484357 10726.87 704 683 138.3
B 4 171 626009 4521.07 704 683 138.3
B 5 32 139746 1005.42 704 683 138.3
C 1 3 60660 353.08 721 724 169.8
C 14 254 17732 100.19 721 724 169.8
C 13 61 4821 24.13 721 724 169.8
D 1 52 1158854 6560.01 703 682 176.6
D 13 249 583972 3303.82 703 682 176.6
D 8 176 82317 462.39 703 682 176.6

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