ASTROSAT CZTI

Data Quality Report

Orbit 10509

Creation date: 2024-06-27T16:00:20.100805
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_127T02_9000001522_10509cztM0_level2.evt modeM0/AS1A03_127T02_9000001522_10509cztM0_level2_quad_clean.evt
Size (bytes)465,949,440120,392,640
Size444.4 MB 114.8 MB
Events in quadrant A2,998,936795,753
Events in quadrant B3,328,279817,394
Events in quadrant C2,882,946839,531
Events in quadrant D4,482,172763,031

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129306
B01395316
C0126253
D0173503

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6172420.680493%
B61691342.172151%
C6173350.566985%
D61733645.896647%

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 7399 6175 7 7 0.09% 0.11%
B 7399 6175 60 60 0.81% 0.97%
C 7399 6175 2 2 0.03% 0.03%
D 7399 6175 302 302 4.08% 4.89%

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 14 254 66608 456.08 722 706 144.5
A 3 80 50762 346.42 722 706 144.5
A 13 251 45599 310.69 722 706 144.5
B 4 239 337906 2518.14 727 707 133.9
B 0 214 44392 326.23 727 707 133.9
B 11 51 41085 301.54 727 707 133.9
C 14 234 28889 168.64 730 734 167.0
C 13 61 5405 27.98 730 734 167.0
C 14 67 2902 12.99 730 734 167.0
D 1 52 1110732 6748.54 699 680 164.5
D 2 16 338205 2051.98 699 680 164.5
D 8 195 238248 1444.29 699 680 164.5

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