ASTROSAT CZTI

Data Quality Report

Orbit 08968

Creation date: 2024-06-27T15:39:34.247078
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/AS1G07_019T01_9000001244_08968cztM0_level2.evt modeM0/AS1G07_019T01_9000001244_08968cztM0_level2_quad_clean.evt
Size (bytes)520,372,80081,694,080
Size496.3 MB 77.9 MB
Events in quadrant A4,093,490500,200
Events in quadrant B4,317,475491,651
Events in quadrant C3,244,315502,880
Events in quadrant D3,620,304482,333

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168653
B0175901
C0146021
D0156391

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7133650.911258%
B71333414.780597%
C7133360.504696%
D7133630.883219%

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 8749 7137 6 6 0.07% 0.08%
B 8749 7136 219 219 2.50% 3.07%
C 8749 7137 4 4 0.05% 0.06%
D 8749 7137 29 29 0.33% 0.41%

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 5 872648 5130.76 826 805 169.9
A 5 16 20984 118.75 826 805 169.9
A 13 248 9893 53.48 826 805 169.9
B 10 16 1005108 6398.13 822 802 157.0
B 0 214 34979 217.73 822 802 157.0
B 0 168 17024 103.35 822 802 157.0
C 4 254 37435 193.46 811 815 189.3
C 14 234 13460 66.8 811 815 189.3
C 8 128 11115 54.41 811 815 189.3
D 8 195 156143 788.99 806 782 196.9
D 2 14 97001 488.64 806 782 196.9
D 7 71 91860 462.53 806 782 196.9

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