ASTROSAT CZTI

Data Quality Report

Orbit 30566

Creation date: 2024-06-27T20:17:02.833884
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/AS1A10_094T78_9000004402_30566cztM0_level2.evt modeM0/AS1A10_094T78_9000004402_30566cztM0_level2_quad_clean.evt
Size (bytes)650,810,880154,716,480
Size620.7 MB 147.5 MB
Events in quadrant A4,014,5361,050,008
Events in quadrant B6,274,1161,043,790
Events in quadrant C4,413,9301,011,386
Events in quadrant D4,443,5941,002,788

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171082
B0250812
C0183392
D0182942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83251181.417417%
B83261772.125871%
C83262342.810473%
D83261211.453279%

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 10020 8327 0 0 0.00% 0.00%
B 10021 8328 4 4 0.04% 0.05%
C 10021 8328 4 4 0.04% 0.05%
D 10021 8328 25 25 0.25% 0.30%

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 8 192 21470 99.27 1035 1012 206.1
A 13 254 13639 61.27 1035 1012 206.1
A 3 137 10296 45.05 1035 1012 206.1
B 6 159 2225346 11427.45 1018 993 194.6
B 12 111 24476 120.64 1018 993 194.6
B 6 36 24370 120.1 1018 993 194.6
C 3 233 225060 979.59 989 993 228.7
C 14 238 166511 723.62 989 993 228.7
C 0 10 51532 220.95 989 993 228.7
D 8 195 253853 1072.79 1005 979 235.7
D 5 222 211986 895.18 1005 979 235.7
D 2 250 57321 239.03 1005 979 235.7

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