ASTROSAT CZTI

Data Quality Report

Orbit 30731

Creation date: 2024-06-27T20:18:59.822324
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_071T11_9000004436_30731cztM0_level2.evt modeM0/AS1A10_071T11_9000004436_30731cztM0_level2_quad_clean.evt
Size (bytes)686,018,88076,726,080
Size654.2 MB 73.2 MB
Events in quadrant A3,657,198501,743
Events in quadrant B5,605,116497,665
Events in quadrant C3,943,913464,769
Events in quadrant D7,148,386422,062

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147522
B0207332
C0159702
D0255902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62541161.854813%
B62542173.469779%
C62541963.133994%
D62545829.306044%

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 7599 6254 12 12 0.16% 0.19%
B 7599 6254 8 8 0.11% 0.13%
C 7599 6254 4 4 0.05% 0.06%
D 7599 6254 519 519 6.83% 8.30%

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 0 13 33653 177.42 934 921 184.5
A 8 192 25273 131.99 934 921 184.5
A 13 254 11832 59.14 934 921 184.5
B 6 159 1670676 9760.16 914 896 171.1
B 6 36 304044 1771.95 914 896 171.1
B 5 172 20595 115.14 914 896 171.1
C 3 233 347660 1745.68 862 868 198.7
C 14 238 142767 714.29 862 868 198.7
C 0 10 37413 183.96 862 868 198.7
D 8 195 2859516 13572.87 857 836 210.6
D 10 253 617901 2929.79 857 836 210.6
D 13 174 197335 932.97 857 836 210.6

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