ASTROSAT CZTI

Data Quality Report

Orbit 20230114_A12_044T16_9000005478_level2

Creation date: 2023-01-16T11:24:30.276744
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_044T16_9000005478cztM0_level2.fits modeM0/AS1A12_044T16_9000005478cztM0_level2_quad_clean.evt
Size (bytes)381,340,800316,843,200
Size363.7 MB 302.2 MB
Events in quadrant A2,233,4861,675,288
Events in quadrant B2,229,6441,793,807
Events in quadrant C2,229,3821,663,263
Events in quadrant D1,966,0821,573,863

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08560
B08560
C08560
D08560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01462610
B0942740
C01172270
D01051720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4206933457.951223%
B420698401.996720%
C4206920484.868193%
D4206911302.686063%

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 58776 42069 0 0 0.00% 0.00%
B 58776 42049 0 0 0.00% 0.00%
C 58776 42038 0 0 0.00% 0.00%
D 58776 42064 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 9 19 1885 8.98 582 544 149.4
A 0 29 1821 8.55 582 544 149.4
A 7 110 1814 8.5 582 544 149.4
B 2 9 1915 11.72 588 560 115.6
B 3 80 1667 9.57 588 560 115.6
B 5 128 1588 8.89 588 560 115.6
C 1 81 1853 8.49 589 551 153.4
C 1 80 1811 8.21 589 551 153.4
C 3 202 1744 7.78 589 551 153.4
D 7 3 1478 6.4 562 511 151.0
D 4 160 1425 6.05 562 511 151.0
D 6 38 1422 6.03 562 511 151.0

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