ASTROSAT CZTI

Data Quality Report

Orbit 19544

Creation date: 2024-06-27T18:04:11.884638
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_142T01_9000002904_19544cztM0_level2.evt modeM0/AS1A05_142T01_9000002904_19544cztM0_level2_quad_clean.evt
Size (bytes)505,566,72077,155,200
Size482.1 MB 73.6 MB
Events in quadrant A3,576,340463,912
Events in quadrant B3,673,187466,504
Events in quadrant C3,836,132448,110
Events in quadrant D3,728,409448,322

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152602
B0154332
C0157262
D0158312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73181552.118065%
B73181782.432359%
C73182042.787647%
D73181391.899426%

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 7768 7319 2 2 0.03% 0.03%
B 7768 7320 8 8 0.10% 0.11%
C 7768 7319 0 0 0.00% 0.00%
D 7768 7319 6 6 0.08% 0.08%

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 5 16 12250 60.5 924 904 187.5
A 13 254 11418 56.06 924 904 187.5
A 0 226 8003 37.85 924 904 187.5
B 0 230 31376 172.01 912 886 177.3
B 0 198 29437 161.08 912 886 177.3
B 3 64 24117 131.06 912 886 177.3
C 3 233 251826 1215.77 875 882 206.4
C 14 238 135091 650.21 875 882 206.4
C 7 247 30487 143.43 875 882 206.4
D 1 52 208222 935.18 902 875 221.7
D 12 225 55512 246.42 902 875 221.7
D 7 96 52287 231.88 902 875 221.7

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