ASTROSAT CZTI

Data Quality Report

Orbit 17324

Creation date: 2024-06-27T17:35:00.057918
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/AS1A05_169T01_9000002558_17324cztM0_level2.evt modeM0/AS1A05_169T01_9000002558_17324cztM0_level2_quad_clean.evt
Size (bytes)479,410,56084,355,200
Size457.2 MB 80.4 MB
Events in quadrant A3,461,183538,992
Events in quadrant B3,574,869539,388
Events in quadrant C3,607,268508,149
Events in quadrant D3,428,693509,157

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146042
B0149822
C0150842
D0145822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65701382.100457%
B65711692.571907%
C65711952.967585%
D65711121.704459%

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 8955 6570 0 0 0.00% 0.00%
B 8956 6571 1 1 0.01% 0.02%
C 8956 6571 0 0 0.00% 0.00%
D 8956 6573 5 5 0.06% 0.08%

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 0 226 7883 38.95 900 885 179.7
A 3 137 6589 31.74 900 885 179.7
A 12 194 6322 30.26 900 885 179.7
B 0 230 80611 477.5 894 875 167.0
B 12 111 20128 115.3 894 875 167.0
B 11 111 17316 98.46 894 875 167.0
C 3 233 146952 740.32 852 860 197.3
C 14 238 134049 674.94 852 860 197.3
C 13 61 6062 26.36 852 860 197.3
D 5 222 83897 397.65 865 843 208.9
D 2 152 48560 228.46 865 843 208.9
D 2 234 23342 107.72 865 843 208.9

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