ASTROSAT CZTI

Data Quality Report

Orbit 10172

Creation date: 2024-06-27T15:55:55.089738
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/AS1A03_133T01_9000001464_10172cztM0_level2.evt modeM0/AS1A03_133T01_9000001464_10172cztM0_level2_quad_clean.evt
Size (bytes)489,026,88093,620,160
Size466.4 MB 89.3 MB
Events in quadrant A3,466,934597,966
Events in quadrant B3,569,918603,464
Events in quadrant C3,225,463598,233
Events in quadrant D4,090,792566,546

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145033
B0148032
C0140112
D0161962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67161472.188803%
B67161452.159023%
C67161181.756998%
D67162223.305539%

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 8811 6716 20 20 0.23% 0.30%
B 8811 6716 7 7 0.08% 0.10%
C 8811 6716 0 0 0.00% 0.00%
D 8811 6716 91 91 1.03% 1.35%

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 15 223 122414 712.16 849 834 170.7
A 15 239 33874 193.53 849 834 170.7
A 8 15 16686 92.85 849 834 170.7
B 4 81 98559 606.95 848 831 161.0
B 0 214 60055 367.82 848 831 161.0
B 5 255 54834 335.39 848 831 161.0
C 13 61 6274 28.58 825 832 190.4
C 14 234 6010 27.19 825 832 190.4
C 3 202 2154 6.94 825 832 190.4
D 1 52 460013 2198.55 816 799 208.9
D 8 195 311168 1485.93 816 799 208.9
D 7 71 46994 221.16 816 799 208.9

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