ASTROSAT CZTI

Data Quality Report

Orbit 18645

Creation date: 2024-06-27T17:52:54.144126
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/AS1A06_003T01_9000002786_18645cztM0_level2.evt modeM0/AS1A06_003T01_9000002786_18645cztM0_level2_quad_clean.evt
Size (bytes)584,000,640105,494,400
Size556.9 MB 100.6 MB
Events in quadrant A5,564,639662,255
Events in quadrant B3,612,149702,963
Events in quadrant C3,821,751684,263
Events in quadrant D4,217,765661,970

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212702
B0152332
C0156092
D0171922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69425277.591472%
B69421602.304811%
C69421952.808989%
D69431532.203658%

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 9387 6944 320 320 3.41% 4.61%
B 9387 6944 2 2 0.02% 0.03%
C 9387 6944 36 36 0.38% 0.52%
D 9388 6945 38 38 0.40% 0.55%

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 2198201 12583.01 869 853 174.6
A 6 16 13292 71.23 869 853 174.6
A 13 254 8606 44.4 869 853 174.6
B 0 183 77838 458.32 888 865 167.9
B 0 230 38714 225.36 888 865 167.9
B 12 111 20214 115.21 888 865 167.9
C 9 54 288144 1434.03 867 873 200.3
C 14 238 132801 658.57 867 873 200.3
C 3 233 18630 88.64 867 873 200.3
D 1 52 759173 3615.89 874 847 209.7
D 7 238 93208 440.4 874 847 209.7
D 2 234 26597 122.78 874 847 209.7

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