ASTROSAT CZTI

Data Quality Report

Orbit 29773

Creation date: 2024-06-27T20:07:36.882715
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/AS1T03_291T01_9000004278_29773cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29773cztM0_level2_quad_clean.evt
Size (bytes)593,501,76070,171,200
Size566.0 MB 66.9 MB
Events in quadrant A3,459,203438,007
Events in quadrant B6,235,430427,206
Events in quadrant C3,732,344408,175
Events in quadrant D4,113,099403,163

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144801
B0226801
C0152091
D0164931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6422801.245718%
B64224697.303021%
C64211842.865597%
D6421941.463946%

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 7621 6421 0 0 0.00% 0.00%
B 7621 6421 207 207 2.72% 3.22%
C 7620 6420 0 0 0.00% 0.00%
D 7620 6420 27 27 0.35% 0.42%

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 13 254 16102 86.34 895 881 176.3
A 3 137 8115 41.03 895 881 176.3
A 0 226 7811 39.31 895 881 176.3
B 6 159 1855803 11696.02 862 845 158.6
B 0 229 888215 5595.11 862 845 158.6
B 5 255 67581 420.79 862 845 158.6
C 3 233 298151 1574.4 829 839 188.8
C 14 238 155634 819.71 829 839 188.8
C 14 254 26557 136.19 829 839 188.8
D 8 195 636353 3247.15 848 829 195.7
D 2 250 122190 620.08 848 829 195.7
D 11 176 33860 168.77 848 829 195.7

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