ASTROSAT CZTI

Data Quality Report

Orbit 35564

Creation date: 2022-04-27T02:14:55.158838
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_026T01_9000005092_35564cztM0_level2.evt modeM0/AS1T05_026T01_9000005092_35564cztM0_level2_quad_clean.evt
Size (bytes)457,421,76096,264,000
Size436.2 MB 91.8 MB
Events in quadrant A3,663,585620,671
Events in quadrant B3,107,554638,554
Events in quadrant C3,262,069653,287
Events in quadrant D3,445,007616,494

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152693
B0128132
C0129902
D0138792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5524250.452571%
B55241683.041274%
C55241312.371470%
D55241051.900797%

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 9229 5526 11 11 0.12% 0.20%
B 9229 5526 134 134 1.45% 2.42%
C 9229 5526 89 89 0.96% 1.61%
D 9229 5526 73 73 0.79% 1.32%

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 15 169 961774 7340.63 654 642 130.9
A 10 83 139410 1059.84 654 642 130.9
A 13 6 17940 132.11 654 642 130.9
B 5 200 274031 2220.95 654 637 123.1
B 5 172 195734 1584.9 654 637 123.1
B 0 189 27672 219.62 654 637 123.1
C 0 10 410466 2708.79 658 664 151.3
C 15 214 246692 1626.25 658 664 151.3
C 14 67 27578 177.9 658 664 151.3
D 8 195 281668 1807.16 652 636 155.5
D 10 118 123602 790.72 652 636 155.5
D 13 249 81783 521.81 652 636 155.5

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