ASTROSAT CZTI

Data Quality Report

Orbit 21914

Creation date: 2024-06-27T18:33:53.034645
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/AS1A07_100T03_9000003242_21914cztM0_level2.evt modeM0/AS1A07_100T03_9000003242_21914cztM0_level2_quad_clean.evt
Size (bytes)465,747,840122,673,600
Size444.2 MB 117.0 MB
Events in quadrant A3,380,689826,657
Events in quadrant B3,400,746841,134
Events in quadrant C3,410,009821,086
Events in quadrant D3,498,603799,917

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141932
B0141342
C0141222
D0145422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61151232.011447%
B61151071.749796%
C61141432.338894%
D61141111.815505%

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 7475 6115 25 25 0.33% 0.41%
B 7475 6115 2 2 0.03% 0.03%
C 7474 6114 6 6 0.08% 0.10%
D 7474 6114 28 28 0.37% 0.46%

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 4 2 124562 743.15 843 827 166.5
A 13 254 11342 63.15 843 827 166.5
A 0 226 7385 39.39 843 827 166.5
B 3 64 48382 309.97 841 822 153.4
B 0 190 23388 147.07 841 822 153.4
B 0 230 19453 121.42 841 822 153.4
C 14 238 133434 706.31 825 833 187.7
C 10 22 52139 273.29 825 833 187.7
C 0 10 5997 27.51 825 833 187.7
D 1 52 197930 992.36 835 814 198.6
D 2 234 37331 183.84 835 814 198.6
D 5 32 35152 172.87 835 814 198.6

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