ASTROSAT CZTI

Data Quality Report

Orbit 20240731_A13_081T01_9000006354_level2

Creation date: 2024-08-03T13:35:53.822380
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/AS1A13_081T01_9000006354cztM0_level2.fits modeM0/AS1A13_081T01_9000006354cztM0_level2_quad_clean.evt
Size (bytes)949,907,5201,436,117,760
Size905.9 MB 1.3 GB
Events in quadrant A5,599,3889,642,077
Events in quadrant B5,452,9549,749,847
Events in quadrant C5,670,4129,345,797
Events in quadrant D4,346,3187,075,789

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022720
B022720
C022720
D022720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04125350
B02605410
C02366670
D04211930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11215438773.456854%
B11215430992.763165%
C11215514731.313361%
D1121532157019.232655%

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 129934 112151 0 0 0.00% 0.00%
B 129934 112107 0 0 0.00% 0.00%
C 129934 112147 0 0 0.00% 0.00%
D 129934 111495 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 15 236 4507 8.31 1458 1364 378.4
A 7 110 4495 8.27 1458 1364 378.4
A 14 95 4294 7.74 1458 1364 378.4
B 2 9 5201 13.73 1441 1374 278.8
B 2 8 4192 10.11 1441 1374 278.8
B 3 17 3842 8.85 1441 1374 278.8
C 1 81 4423 7.86 1497 1391 385.6
C 1 80 4329 7.62 1497 1391 385.6
C 3 202 4240 7.39 1497 1391 385.6
D 10 189 3206 5.9 1250 1129 352.2
D 6 38 3183 5.83 1250 1129 352.2
D 6 67 3155 5.75 1250 1129 352.2

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