ASTROSAT CZTI

Data Quality Report

Orbit 42349

Creation date: 2024-06-27T22:39:19.098636
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_102T01_9000005798_42349cztM0_level2.fits modeM0/AS1A12_102T01_9000005798_42349cztM0_level2_quad_clean.evt
Size (bytes)341,781,12096,796,800
Size325.9 MB 92.3 MB
Events in quadrant A3,063,283644,033
Events in quadrant B2,613,037653,921
Events in quadrant C2,722,603634,481
Events in quadrant D3,786,026579,966

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129762
B0122252
C0121782
D0155532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5989190.317248%
B5990180.300501%
C599070.116861%
D59901552.587646%

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 8764 5991 4 4 0.05% 0.07%
B 8765 5992 6 6 0.07% 0.10%
C 8765 5992 2 2 0.02% 0.03%
D 8765 5992 163 163 1.86% 2.72%

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 590093 4526.25 633 619 130.2
A 13 248 11741 85.4 633 619 130.2
A 13 254 9970 71.8 633 619 130.2
B 5 172 38412 304.3 632 614 124.2
B 0 230 25749 202.35 632 614 124.2
B 5 255 23745 186.22 632 614 124.2
C 15 214 251062 1723.47 622 627 145.3
C 15 111 25793 173.19 622 627 145.3
C 5 128 9992 64.45 622 627 145.3
D 5 222 598021 3962.95 614 598 150.8
D 12 6 208904 1381.78 614 598 150.8
D 1 52 169032 1117.29 614 598 150.8

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