ASTROSAT CZTI

Data Quality Report

Orbit 48551

Creation date: 2024-09-20T10:53:50.644194
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_037T01_9000006436_48551cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48551cztM0_level2_quad_clean.evt
Size (bytes)420,857,280101,142,720
Size401.4 MB 96.5 MB
Events in quadrant A6,399,819643,924
Events in quadrant B2,998,826686,224
Events in quadrant C2,792,520667,567
Events in quadrant D2,875,062605,498

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024308669
B014187237
C013833231
D014143216

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01346
B01364
C01360
D01362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65452944.491979%
B66012073.135889%
C6603951.438740%
D66111151.739525%

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 7390 6615 2 2 0.03% 0.03%
B 7390 6650 1 1 0.01% 0.02%
C 7390 6662 0 0 0.00% 0.00%
D 7390 6659 4 4 0.05% 0.06%

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 10 83 3617052 24452.67 704 687 147.9
A 13 248 19035 124.06 704 687 147.9
A 7 3 14242 91.65 704 687 147.9
B 5 255 133488 929.29 715 692 142.9
B 0 155 25717 175.12 715 692 142.9
B 12 111 18871 127.21 715 692 142.9
C 12 250 9358 51.08 710 711 169.3
C 14 67 7488 40.04 710 711 169.3
C 3 233 6574 34.64 710 711 169.3
D 2 249 73838 414.16 706 684 176.6
D 12 2 43070 239.97 706 684 176.6
D 2 234 31440 174.13 706 684 176.6

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