ASTROSAT CZTI

Data Quality Report

Orbit 20230520_A12_025T15_9000005648_level2

Creation date: 2023-05-22T10:32:02.950578
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_025T15_9000005648cztM0_level2.fits modeM0/AS1A12_025T15_9000005648cztM0_level2_quad_clean.evt
Size (bytes)104,345,280127,592,640
Size99.5 MB 121.7 MB
Events in quadrant A625,460799,186
Events in quadrant B598,466805,411
Events in quadrant C595,030757,737
Events in quadrant D527,108687,440

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250810
B0248470
C0264070
D0296830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11767240.203960%
B11767210.178465%
C117673993.390839%
D117672842.413529%

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 17355 11766 0 0 0.00% 0.00%
B 17356 11767 0 0 0.00% 0.00%
C 17356 11702 0 0 0.00% 0.00%
D 17356 11749 0 0 0.00% 0.00%

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 7 110 563 9.49 163 152 43.3
A 0 29 510 8.27 163 152 43.3
A 9 19 492 7.85 163 152 43.3
B 2 9 508 10.64 158 150 33.6
B 3 80 426 8.21 158 150 33.6
B 5 128 424 8.15 158 150 33.6
C 1 81 472 7.77 157 147 41.8
C 1 80 459 7.46 157 147 41.8
C 9 233 438 6.96 157 147 41.8
D 4 160 413 6.71 150 137 41.1
D 10 189 411 6.66 150 137 41.1
D 6 231 403 6.47 150 137 41.1

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