ASTROSAT CZTI

Data Quality Report

Orbit 46136

Creation date: 2024-06-27T23:19:32.223769
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_098T02_9000006174_46136cztM0_level2.fits modeM0/AS1A13_098T02_9000006174_46136cztM0_level2_quad_clean.evt
Size (bytes)612,264,96093,274,560
Size583.9 MB 89.0 MB
Events in quadrant A5,636,338645,628
Events in quadrant B3,601,344667,947
Events in quadrant C4,814,437616,219
Events in quadrant D8,132,580462,084

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205671
B0147251
C0187332
D0284581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61881913.086619%
B61892283.683955%
C61885158.322560%
D6188172627.892696%

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 7013 6189 4 4 0.06% 0.06%
B 7014 6190 95 95 1.35% 1.53%
C 7013 6189 395 395 5.63% 6.38%
D 7013 6189 1308 1308 18.65% 21.13%

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 2793647 19351.61 692 678 144.3
A 9 191 142348 981.59 692 678 144.3
A 2 79 12901 84.69 692 678 144.3
B 15 201 373363 2702.27 687 666 137.9
B 5 172 218139 1576.81 687 666 137.9
B 3 112 204313 1476.56 687 666 137.9
C 14 254 1925800 12261.55 665 668 157.0
C 12 2 240319 1526.39 665 668 157.0
C 2 14 38126 238.58 665 668 157.0
D 1 52 2400237 15483.59 613 593 155.0
D 2 249 1228223 7921.22 613 593 155.0
D 5 235 1021355 6586.42 613 593 155.0

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