ASTROSAT CZTI

Data Quality Report

Orbit 17117

Creation date: 2024-06-27T17:32:20.021972
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/AS1A05_004T03_9000002538_17117cztM0_level2.evt modeM0/AS1A05_004T03_9000002538_17117cztM0_level2_quad_clean.evt
Size (bytes)630,964,800120,795,840
Size601.7 MB 115.2 MB
Events in quadrant A4,342,120767,498
Events in quadrant B4,619,386771,251
Events in quadrant C4,941,225738,450
Events in quadrant D4,567,272728,418

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193442
B0198732
C0205132
D0201822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A94122092.220569%
B94122282.422439%
C94123063.251169%
D94121481.572461%

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 10052 9413 0 0 0.00% 0.00%
B 10052 9413 7 7 0.07% 0.07%
C 10052 9414 55 55 0.55% 0.58%
D 10052 9415 14 14 0.14% 0.15%

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 4 2 61107 263.83 1112 1083 227.5
A 0 226 9833 38.46 1112 1083 227.5
A 12 194 8252 31.51 1112 1083 227.5
B 7 220 162709 762.47 1107 1076 212.0
B 15 35 33109 151.11 1107 1076 212.0
B 0 219 32573 148.58 1107 1076 212.0
C 3 233 428279 1722.94 1061 1066 248.0
C 14 238 163512 655.14 1061 1066 248.0
C 9 160 102194 407.85 1061 1066 248.0
D 5 222 253548 952.84 1085 1052 265.0
D 7 38 96612 360.61 1085 1052 265.0
D 10 70 66794 248.09 1085 1052 265.0

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