ASTROSAT CZTI

Data Quality Report

Orbit 04026

Creation date: 2024-06-27T14:36:30.159856
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_173T01_9000000514_04026cztM0_level2.evt modeM0/AS1G05_173T01_9000000514_04026cztM0_level2_quad_clean.evt
Size (bytes)425,531,52064,408,320
Size405.8 MB 61.4 MB
Events in quadrant A3,254,574373,063
Events in quadrant B3,095,593376,635
Events in quadrant C2,946,877374,085
Events in quadrant D3,136,286361,049

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143823
B0136872
C0136172
D0141902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6677951.422795%
B6677711.063352%
C6677480.718886%
D6677691.033398%

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 7622 6679 11 11 0.14% 0.16%
B 7622 6679 0 0 0.00% 0.00%
C 7622 6679 0 0 0.00% 0.00%
D 7622 6679 16 16 0.21% 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 0 50 232775 1468.62 772 754 158.0
A 14 111 31787 196.43 772 754 158.0
A 8 15 15716 94.7 772 754 158.0
B 15 204 29247 189.65 782 765 150.2
B 0 183 14759 93.18 782 765 150.2
B 4 81 13016 81.58 782 765 150.2
C 13 61 6339 31.91 751 753 175.1
C 1 16 4209 19.74 751 753 175.1
C 9 144 3937 18.19 751 753 175.1
D 11 132 122462 677.11 744 722 179.8
D 2 14 48434 265.37 744 722 179.8
D 2 232 36960 201.55 744 722 179.8

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