ASTROSAT CZTI

Data Quality Report

Orbit 20170228_G06_104T01_9000001060_level2

Creation date: 2025-11-09T20:15:57.356301
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/AS1G06_104T01_9000001060cztM0_level2.fits modeM0/AS1G06_104T01_9000001060cztM0_level2_quad_clean.evt
Size (bytes)751,898,880672,436,800
Size717.1 MB 641.3 MB
Events in quadrant A4,601,4303,959,712
Events in quadrant B4,431,3623,982,748
Events in quadrant C4,249,8223,485,947
Events in quadrant D3,922,6283,374,615

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016560
B016560
C016560
D016560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01665080
B01719510
C02818760
D01868830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A810949871.217106%
B8109411971.476065%
C810941124413.865391%
D8109414541.792981%

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 93639 81090 0 0 0.00% 0.00%
B 93639 81091 0 0 0.00% 0.00%
C 93639 81061 0 0 0.00% 0.00%
D 93639 81086 0 0 0.00% 0.00%

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 0 29 4430 10.93 1196 1118 303.0
A 7 110 3857 9.04 1196 1118 303.0
A 0 30 3547 8.02 1196 1118 303.0
B 2 9 3850 11.74 1169 1111 233.2
B 12 226 3128 8.65 1169 1111 233.2
B 3 17 3006 8.13 1169 1111 233.2
C 1 80 3211 7.37 1122 1043 294.2
C 1 81 3117 7.05 1122 1043 294.2
C 12 241 3011 6.69 1122 1043 294.2
D 6 231 2890 6.4 1118 1017 292.5
D 7 5 2850 6.27 1118 1017 292.5
D 15 47 2841 6.24 1118 1017 292.5

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