ASTROSAT CZTI

Data Quality Report

Orbit 35998

Creation date: 2022-07-19T01:37:46.581548
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_050T19_9000005156_35998cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_35998cztM0_level2_quad_clean.evt
Size (bytes)521,346,240102,280,320
Size497.2 MB 97.5 MB
Events in quadrant A2,627,237717,190
Events in quadrant B3,099,835718,051
Events in quadrant C4,874,070656,768
Events in quadrant D4,826,185631,582

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111353
B0126062
C0177662
D0179182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A532970.131357%
B53291082.026647%
C532980815.162319%
D532972513.604804%

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 8918 5332 0 0 0.00% 0.00%
B 8918 5332 66 66 0.74% 1.24%
C 8918 5332 718 718 8.05% 13.47%
D 8918 5332 539 539 6.04% 10.11%

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 164445 1292.66 633 621 126.7
A 8 144 8408 61.44 633 621 126.7
A 13 254 8034 58.49 633 621 126.7
B 4 171 248842 2112.42 622 606 117.5
B 5 172 233597 1982.69 622 606 117.5
B 4 232 88148 744.96 622 606 117.5
C 0 207 1938410 14513.08 582 586 133.5
C 9 187 297478 2223.53 582 586 133.5
C 15 214 210140 1569.43 582 586 133.5
D 1 52 1486972 10313.36 585 568 144.1
D 12 235 328535 2275.59 585 568 144.1
D 2 250 196197 1357.36 585 568 144.1

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