ASTROSAT CZTI

Data Quality Report

Orbit 20230416_A12_104T02_9000005572_level2

Creation date: 2023-04-20T13:05:29.355978
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_104T02_9000005572cztM0_level2.fits modeM0/AS1A12_104T02_9000005572cztM0_level2_quad_clean.evt
Size (bytes)1,535,636,1601,561,271,040
Size1.4 GB 1.5 GB
Events in quadrant A9,254,9989,505,435
Events in quadrant B8,917,0509,489,725
Events in quadrant C8,989,5488,947,815
Events in quadrant D7,446,9947,451,563

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06510
B06510
C06510
D06510

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03833230
B03712750
C03882680
D05927460

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035460
B035460
C035460
D035460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1735319900.570503%
B17353117921.032669%
C17353133391.924152%
D1735311854510.686851%

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 238795 173529 0 0 0.00% 0.00%
B 238795 173524 0 0 0.00% 0.00%
C 238795 173300 0 0 0.00% 0.00%
D 238795 173436 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 7621 8.8 2414 2254 610.1
A 9 19 7543 8.67 2414 2254 610.1
A 0 29 7423 8.47 2414 2254 610.1
B 2 9 7758 12.04 2356 2242 458.3
B 3 80 6372 9.01 2356 2242 458.3
B 3 17 6188 8.61 2356 2242 458.3
C 1 81 7268 8.26 2375 2215 611.6
C 1 80 6946 7.74 2375 2215 611.6
C 3 202 6796 7.49 2375 2215 611.6
D 7 3 5504 6.24 2133 1935 572.2
D 4 160 5413 6.08 2133 1935 572.2
D 10 189 5401 6.06 2133 1935 572.2

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