ASTROSAT CZTI

Data Quality Report

Orbit 06647

Creation date: 2024-06-27T15:09:50.608698
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/AS1A02_189T01_9000000902_06647cztM0_level2.evt modeM0/AS1A02_189T01_9000000902_06647cztM0_level2_quad_clean.evt
Size (bytes)534,839,040110,767,680
Size510.1 MB 105.6 MB
Events in quadrant A3,862,574714,817
Events in quadrant B3,603,671730,189
Events in quadrant C3,214,743720,969
Events in quadrant D5,011,569670,730

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016879448
B016354411
C015648383
D021180964

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01562
B01562
C01568
D01566

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74531131.516168%
B7452921.234568%
C7466410.549156%
D74022783.755742%

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 8882 7578 2 2 0.02% 0.03%
B 8882 7567 2 2 0.02% 0.03%
C 8882 7593 0 0 0.00% 0.00%
D 8882 7527 151 151 1.70% 2.01%

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 8 15 567213 3283.9 842 822 172.5
A 15 239 30706 173.27 842 822 172.5
A 0 226 8551 44.81 842 822 172.5
B 0 228 95995 585.39 851 828 162.6
B 4 80 67864 412.35 851 828 162.6
B 4 81 47472 286.91 851 828 162.6
C 8 128 14711 73.87 815 816 188.1
C 8 112 7164 33.75 815 816 188.1
C 13 61 6570 30.59 815 816 188.1
D 2 33 727187 3705.42 797 768 196.0
D 8 195 610129 3108.31 797 768 196.0
D 2 152 316587 1610.97 797 768 196.0

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