ASTROSAT CZTI

Data Quality Report

Orbit 37322

Creation date: 2024-06-27T21:38:26.934955
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_030T02_9000005310_37322cztM0_level2.evt modeM0/AS1A11_030T02_9000005310_37322cztM0_level2_quad_clean.evt
Size (bytes)434,998,08055,411,200
Size414.8 MB 52.8 MB
Events in quadrant A3,216,210322,929
Events in quadrant B3,093,512324,856
Events in quadrant C3,122,169316,446
Events in quadrant D3,342,202302,048

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131413
B0129262
C0127522
D0138782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5883530.900901%
B5883661.121877%
C5883460.781914%
D58831242.107768%

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 7346 5884 38 38 0.52% 0.65%
B 7346 5884 38 38 0.52% 0.65%
C 7346 5884 39 39 0.53% 0.66%
D 7346 5884 94 94 1.28% 1.60%

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 291932 2150.08 669 656 135.5
A 13 248 98076 719.12 669 656 135.5
A 15 237 93985 688.92 669 656 135.5
B 0 190 168352 1315.28 664 648 127.5
B 4 171 131106 1023.16 664 648 127.5
B 5 172 110961 865.17 664 648 127.5
C 15 214 245240 1593.01 653 657 153.5
C 1 23 139877 906.76 653 657 153.5
C 0 10 130147 843.39 653 657 153.5
D 2 249 328486 2026.53 654 635 161.8
D 13 249 140822 866.53 654 635 161.8
D 12 17 118553 728.88 654 635 161.8

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