ASTROSAT CZTI

Data Quality Report

Orbit 13151

Creation date: 2024-06-27T16:36:56.600270
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/AS1A04_094T01_9000001942_13151cztM0_level2.evt modeM0/AS1A04_094T01_9000001942_13151cztM0_level2_quad_clean.evt
Size (bytes)984,991,680158,846,400
Size939.4 MB 151.5 MB
Events in quadrant A6,448,885984,023
Events in quadrant B9,559,756961,880
Events in quadrant C5,986,545998,580
Events in quadrant D6,946,565958,689

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277294
B0370383
C0269083
D0293593

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131341841.400944%
B13134155011.801431%
C131341491.134460%
D131343132.383128%

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 15230 13138 1 1 0.01% 0.01%
B 15230 13138 913 913 5.99% 6.95%
C 15230 13138 3 3 0.02% 0.02%
D 15230 13138 104 104 0.68% 0.79%

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 12 189 310372 977.06 1561 1526 316.1
A 9 143 33525 101.23 1561 1526 316.1
A 1 162 27596 82.47 1561 1526 316.1
B 4 239 2101841 7490.94 1473 1434 280.4
B 3 64 1492667 5318.37 1473 1434 280.4
B 3 209 40509 139.36 1473 1434 280.4
C 14 234 31092 84.03 1520 1524 351.9
C 0 207 26665 71.44 1520 1524 351.9
C 13 61 11269 27.69 1520 1524 351.9
D 1 52 897594 2463.77 1507 1458 363.7
D 5 222 141261 384.36 1507 1458 363.7
D 8 195 90359 244.42 1507 1458 363.7

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