ASTROSAT CZTI

Data Quality Report

Orbit 03661

Creation date: 2024-06-27T14:32:05.488959
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/AS1G05_234T02_9000000474_03661cztM0_level2.evt modeM0/AS1G05_234T02_9000000474_03661cztM0_level2_quad_clean.evt
Size (bytes)950,780,160185,221,440
Size906.7 MB 176.6 MB
Events in quadrant A7,043,1961,182,029
Events in quadrant B8,218,6811,167,239
Events in quadrant C6,182,5401,161,131
Events in quadrant D6,402,7821,133,246

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02840
B02840
C02840
D02840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304372
B0334732
C0284052
D0292292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A139912401.715388%
B139913002.144236%
C139911010.721893%
D139911310.936316%

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 16256 13993 77 77 0.47% 0.55%
B 16256 13993 154 154 0.95% 1.10%
C 16256 13993 1 1 0.01% 0.01%
D 16256 13993 33 33 0.20% 0.24%

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 13 164 292530 880.09 1630 1591 330.6
A 0 50 271724 817.15 1630 1591 330.6
A 13 251 135611 405.41 1630 1591 330.6
B 15 204 1099868 3498.36 1640 1600 313.9
B 14 167 434990 1380.5 1640 1600 313.9
B 0 182 90606 283.51 1640 1600 313.9
C 13 61 13345 32.34 1574 1578 363.9
C 9 247 12240 29.3 1574 1578 363.9
C 12 4 9396 21.49 1574 1578 363.9
D 13 223 121200 314.16 1583 1542 380.9
D 13 239 80720 207.88 1583 1542 380.9
D 14 34 36237 91.09 1583 1542 380.9

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
Veto Counter