ASTROSAT CZTI

Data Quality Report

Orbit 34833

Creation date: 2022-03-08T17:23:28.525554
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/AS1C07_005T01_9000004992_34833cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34833cztM0_level2_quad_clean.evt
Size (bytes)692,403,84094,867,200
Size660.3 MB 90.5 MB
Events in quadrant A4,842,709641,051
Events in quadrant B8,293,311509,160
Events in quadrant C3,130,515672,732
Events in quadrant D4,298,369630,839

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182343
B0285402
C0128602
D0171372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A597871311.927066%
B5978237339.695550%
C5978230.384744%
D59782003.345601%

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 7291 5978 615 615 8.44% 10.29%
B 7292 5979 2234 2234 30.64% 37.36%
C 7292 5979 18 18 0.25% 0.30%
D 7292 5979 170 170 2.33% 2.84%

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 15 169 2211597 16918.09 649 636 130.7
A 10 83 52011 393.12 649 636 130.7
A 7 16 29506 220.91 649 636 130.7
B 5 14 1588477 15286.26 542 527 103.9
B 5 31 1588439 15285.9 542 527 103.9
B 5 15 1583640 15239.7 542 527 103.9
C 15 214 276392 1794.57 665 671 153.6
C 0 207 130082 842.29 665 671 153.6
C 0 10 70291 453.13 665 671 153.6
D 8 195 807899 4981.36 659 639 162.1
D 12 233 265171 1632.35 659 639 162.1
D 2 250 137997 847.59 659 639 162.1

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