ASTROSAT CZTI

Data Quality Report

Orbit 17556

Creation date: 2024-06-27T17:37:55.116947
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_066T01_9000002600_17556cztM0_level2.evt modeM0/AS1T03_066T01_9000002600_17556cztM0_level2_quad_clean.evt
Size (bytes)3,396,136,320579,798,720
Size3.2 GB 552.9 MB
Events in quadrant A26,508,7073,701,434
Events in quadrant B24,611,6433,670,128
Events in quadrant C25,365,3273,598,716
Events in quadrant D23,373,5693,544,636

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09040
B09040
C09040
D09040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010928010
B01023588
C01039348
D01009818

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4438020894.707075%
B4438117733.994953%
C4438115193.422636%
D443816981.572745%

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 50930 44388 1280 1280 2.51% 2.88%
B 50931 44388 1145 1145 2.25% 2.58%
C 50931 44386 657 657 1.29% 1.48%
D 50931 44389 335 335 0.66% 0.75%

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 14 237 6290925 6064.85 5177 5068 1036.4
A 15 174 315947 299.95 5177 5068 1036.4
A 0 226 44900 38.43 5177 5068 1036.4
B 10 245 4058598 4142.65 5174 5043 978.5
B 6 36 174095 172.77 5174 5043 978.5
B 12 111 118609 116.06 5174 5043 978.5
C 0 79 3497672 3002.9 5017 5056 1163.1
C 3 233 1224530 1048.49 5017 5056 1163.1
C 14 238 773425 660.63 5017 5056 1163.1
D 13 189 1162530 941.18 5102 4967 1229.9
D 7 238 1162027 940.77 5102 4967 1229.9
D 5 222 1031868 834.94 5102 4967 1229.9

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