ASTROSAT CZTI

Data Quality Report

Orbit 22762

Creation date: 2024-06-27T18:45:21.695064
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/AS1C05_001T01_9000003366_22762cztM0_level2.evt modeM0/AS1C05_001T01_9000003366_22762cztM0_level2_quad_clean.evt
Size (bytes)889,997,760239,667,840
Size848.8 MB 228.6 MB
Events in quadrant A5,872,3681,642,819
Events in quadrant B6,129,7511,643,240
Events in quadrant C5,948,1251,566,462
Events in quadrant D8,131,1641,516,846

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260943
B0266163
C0261453
D0331613

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12886590.457861%
B12887840.651820%
C128871140.884612%
D128874833.747963%

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 14671 12889 0 0 0.00% 0.00%
B 14672 12890 3 3 0.02% 0.02%
C 14672 12890 1 1 0.01% 0.01%
D 14672 12890 303 303 2.07% 2.35%

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 13 254 23551 72.59 1519 1487 304.0
A 0 226 13177 38.46 1519 1487 304.0
A 3 137 12851 37.39 1519 1487 304.0
B 0 230 43170 145.31 1518 1479 286.9
B 12 111 33879 112.93 1518 1479 286.9
B 0 228 32559 108.33 1518 1479 286.9
C 14 238 229251 674.54 1451 1457 337.7
C 10 22 48372 138.92 1451 1457 337.7
C 8 128 11408 29.47 1451 1457 337.7
D 1 52 1179093 3340.72 1452 1409 352.5
D 13 172 814564 2306.67 1452 1409 352.5
D 2 152 215478 607.25 1452 1409 352.5

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