ASTROSAT CZTI

Data Quality Report

Orbit 20552

Creation date: 2024-06-27T18:16:46.273835
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_069T02_9000003038_20552cztM0_level2.evt modeM0/AS1A05_069T02_9000003038_20552cztM0_level2_quad_clean.evt
Size (bytes)495,938,880101,407,680
Size473.0 MB 96.7 MB
Events in quadrant A3,583,890660,593
Events in quadrant B3,631,267675,000
Events in quadrant C3,597,797640,615
Events in quadrant D3,752,995629,150

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150762
B0151272
C0150712
D0155652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66861161.734969%
B66861221.824708%
C66861512.258450%
D66861011.510619%

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 9076 6688 2 2 0.02% 0.03%
B 9076 6688 1 1 0.01% 0.01%
C 9076 6688 0 0 0.00% 0.00%
D 9076 6688 21 21 0.23% 0.31%

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 15 174 33724 180.32 916 899 182.0
A 12 96 10237 51.3 916 899 182.0
A 0 226 7826 38.05 916 899 182.0
B 0 198 21794 120.86 912 890 173.0
B 12 111 20284 112.13 912 890 173.0
B 0 230 19864 109.7 912 890 173.0
C 14 238 138336 669.72 885 892 205.2
C 13 61 6122 25.48 885 892 205.2
C 8 208 4918 19.62 885 892 205.2
D 1 52 324533 1493.88 900 875 216.7
D 13 153 38585 174.05 900 875 216.7
D 2 234 24395 108.56 900 875 216.7

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