ASTROSAT CZTI

Data Quality Report

Orbit 36922

Creation date: 2024-06-27T21:33:14.006761
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_010T01_9000005246_36922cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36922cztM0_level2_quad_clean.evt
Size (bytes)446,109,12070,378,560
Size425.4 MB 67.1 MB
Events in quadrant A3,008,583461,751
Events in quadrant B2,650,796393,022
Events in quadrant C3,104,408448,336
Events in quadrant D4,340,404411,137

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01286936
B01181311
C01282725
D01705042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6019280.465194%
B5781148425.670299%
C6023530.879960%
D60194657.725536%

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 9200 6031 13 13 0.14% 0.22%
B 9200 5785 39 39 0.42% 0.67%
C 9200 6034 34 34 0.37% 0.56%
D 9200 6032 424 424 4.61% 7.03%

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 10 83 245293 1757.24 693 678 139.2
A 9 143 53331 378.24 693 678 139.2
A 12 189 14009 95.77 693 678 139.2
B 5 172 199932 2074.64 493 479 96.1
B 12 243 195225 2025.68 493 479 96.1
B 0 229 139566 1446.73 493 479 96.1
C 15 214 257397 1630.28 673 678 157.5
C 0 10 157594 996.49 673 678 157.5
C 0 207 47443 296.98 673 678 157.5
D 12 17 1100512 6763.42 658 639 162.6
D 13 249 324612 1992.2 658 639 162.6
D 13 171 203860 1249.66 658 639 162.6

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