ASTROSAT CZTI

Data Quality Report

Orbit 39363

Creation date: 2024-06-27T22:03:41.448588
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_018T01_9000005470_39363cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39363cztM0_level2_quad_clean.evt
Size (bytes)802,961,280149,872,320
Size765.8 MB 142.9 MB
Events in quadrant A5,075,9901,068,052
Events in quadrant B4,247,5381,099,540
Events in quadrant C4,766,2421,022,293
Events in quadrant D14,905,981696,974

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205953
B0193902
C0203072
D0508012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9392680.724020%
B9392260.276831%
C9392140.149063%
D9392292231.111584%

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 13157 9394 46 46 0.35% 0.49%
B 13157 9394 13 13 0.10% 0.14%
C 13157 9394 11 11 0.08% 0.12%
D 13157 9394 2720 2720 20.67% 28.95%

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 650736 3152.4 1027 1007 206.1
A 15 223 234985 1135.23 1027 1007 206.1
A 2 79 124169 597.57 1027 1007 206.1
B 4 170 190053 963.28 1020 989 196.3
B 15 85 41418 205.99 1020 989 196.3
B 12 111 24295 118.74 1020 989 196.3
C 9 187 429587 1872.97 992 996 228.8
C 15 214 392163 1709.42 992 996 228.8
C 14 254 37275 158.54 992 996 228.8
D 12 235 10419565 49585.94 867 841 210.1
D 12 227 482226 2291.06 867 841 210.1
D 13 249 394646 1874.24 867 841 210.1

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