ASTROSAT CZTI

Data Quality Report

Orbit 06985

Creation date: 2024-06-27T15:14:05.834210
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/AS1T01_151T01_9000000960_06985cztM0_level2.evt modeM0/AS1T01_151T01_9000000960_06985cztM0_level2_quad_clean.evt
Size (bytes)448,341,12077,973,120
Size427.6 MB 74.4 MB
Events in quadrant A3,199,165473,428
Events in quadrant B3,386,900474,403
Events in quadrant C3,128,647465,833
Events in quadrant D3,381,682454,202

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144423
B0148612
C0143182
D0148232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7081280.395424%
B7081370.522525%
C7081230.324813%
D7081320.451914%

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 7936 7082 3 3 0.04% 0.04%
B 7936 7082 2 2 0.03% 0.03%
C 7936 7082 0 0 0.00% 0.00%
D 7936 7082 15 15 0.19% 0.21%

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 14 25124 146.96 814 796 165.5
A 15 174 24184 141.28 814 796 165.5
A 4 2 14189 80.9 814 796 165.5
B 4 173 69214 427.6 823 799 160.0
B 0 214 60295 371.86 823 799 160.0
B 0 219 43326 265.8 823 799 160.0
C 10 22 14392 73.31 796 800 185.4
C 13 61 6133 28.76 796 800 185.4
C 12 4 3953 17.0 796 800 185.4
D 8 195 194418 991.63 796 769 195.3
D 2 136 116881 594.58 796 769 195.3
D 13 169 32034 160.1 796 769 195.3

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