ASTROSAT CZTI

Data Quality Report

Orbit 35035

Creation date: 2022-06-11T14:08:31.464199
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/AS1T05_010T01_9000005016_35035cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_35035cztM0_level2_quad_clean.evt
Size (bytes)232,634,88054,276,480
Size221.9 MB 51.8 MB
Events in quadrant A1,480,026357,470
Events in quadrant B1,531,733365,125
Events in quadrant C1,644,242356,714
Events in quadrant D2,161,995328,430

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067181
B068361
C068581
D087071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A332010.030120%
B3320120.361446%
C3320140.421687%
D3320952.861446%

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 4871 3320 0 0 0.00% 0.00%
B 4872 3321 8 8 0.16% 0.24%
C 4872 3321 10 10 0.21% 0.30%
D 4871 3320 62 62 1.27% 1.87%

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 41034 540.6 370 363 75.2
A 13 6 6154 76.97 370 363 75.2
A 13 254 4821 59.26 370 363 75.2
B 5 172 28168 384.32 368 358 72.4
B 5 200 23296 316.99 368 358 72.4
B 0 199 14520 195.71 368 358 72.4
C 15 214 137758 1589.93 366 369 86.4
C 0 10 49528 568.89 366 369 86.4
C 14 67 19365 219.83 366 369 86.4
D 8 195 447800 5088.27 356 346 87.9
D 2 249 163852 1859.32 356 346 87.9
D 13 249 72413 819.52 356 346 87.9

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