ASTROSAT CZTI

Data Quality Report

Orbit 36159

Creation date: 2022-06-06T05:41:31.991720
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/AS1A11_059T08_9000005160_36159cztM0_level2.evt modeM0/AS1A11_059T08_9000005160_36159cztM0_level2_quad_clean.evt
Size (bytes)444,185,28080,354,880
Size423.6 MB 76.6 MB
Events in quadrant A2,572,655516,578
Events in quadrant B3,246,647550,766
Events in quadrant C3,887,714519,658
Events in quadrant D3,406,087495,975

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105793
B0128462
C0148172
D0133702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A499460.120144%
B49941513.023628%
C49942184.365238%
D49942565.126151%

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 7057 4995 1 1 0.01% 0.02%
B 7057 4995 86 86 1.22% 1.72%
C 7057 4995 178 178 2.52% 3.56%
D 7056 4994 187 187 2.65% 3.74%

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 166295 1346.88 615 603 123.0
A 9 143 17930 140.85 615 603 123.0
A 13 254 8077 60.75 615 603 123.0
B 5 172 302056 2579.23 617 601 116.9
B 4 171 300913 2569.45 617 601 116.9
B 0 213 102756 874.03 617 601 116.9
C 0 207 999466 7193.14 603 611 138.9
C 15 214 210724 1513.1 603 611 138.9
C 15 208 196064 1407.53 603 611 138.9
D 12 17 442900 3053.97 598 582 144.8
D 2 250 269607 1857.48 598 582 144.8
D 13 249 263623 1816.16 598 582 144.8

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