ASTROSAT CZTI

Data Quality Report

Orbit 41689

Creation date: 2024-06-27T22:31:32.095741
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/AS1A12_044T21_9000005688_41689cztM0_level2.fits modeM0/AS1A12_044T21_9000005688_41689cztM0_level2_quad_clean.evt
Size (bytes)404,642,88092,278,080
Size385.9 MB 88.0 MB
Events in quadrant A3,100,283648,259
Events in quadrant B2,638,335661,828
Events in quadrant C2,865,901617,119
Events in quadrant D5,936,349474,304

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126052
B0115342
C0119682
D0214602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5620120.213523%
B5620300.533808%
C5620671.192171%
D5620117220.854093%

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 7383 5621 3 3 0.04% 0.05%
B 7383 5621 19 19 0.26% 0.34%
C 7383 5621 59 59 0.80% 1.05%
D 7383 5621 1050 1050 14.22% 18.68%

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 535744 4027.69 645 632 132.9
A 13 248 38999 288.78 645 632 132.9
A 15 223 17400 126.21 645 632 132.9
B 5 255 83728 666.58 636 619 124.7
B 0 190 25143 196.7 636 619 124.7
B 0 245 19520 151.6 636 619 124.7
C 15 214 234252 1589.33 622 627 147.0
C 0 10 206868 1403.04 622 627 147.0
C 13 61 4079 23.48 622 627 147.0
D 13 249 1793408 12866.41 574 559 139.3
D 2 120 1290650 9258.36 574 559 139.3
D 2 249 250562 1794.15 574 559 139.3

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