ASTROSAT CZTI

Data Quality Report

Orbit 33898

Creation date: 2024-06-27T20:53:53.706361
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/AS1T04_090T01_9000004840_33898cztM0_level2.evt modeM0/AS1T04_090T01_9000004840_33898cztM0_level2_quad_clean.evt
Size (bytes)501,364,80070,323,840
Size478.1 MB 67.1 MB
Events in quadrant A3,474,415459,666
Events in quadrant B2,896,722467,134
Events in quadrant C2,813,609450,156
Events in quadrant D5,644,530385,330

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139292
B0119771
C0114161
D0204541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5238190.362734%
B52381212.310042%
C5238320.610920%
D523858111.092020%

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 7001 5239 0 0 0.00% 0.00%
B 7001 5239 68 68 0.97% 1.30%
C 7001 5239 24 24 0.34% 0.46%
D 7001 5239 506 506 7.23% 9.66%

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 15 169 1076647 8875.07 615 602 121.2
A 13 6 18809 150.17 615 602 121.2
A 10 83 7134 53.88 615 602 121.2
B 5 172 319608 2779.58 604 589 114.8
B 0 156 64076 553.16 604 589 114.8
B 4 232 48849 420.48 604 589 114.8
C 15 214 228110 1665.29 592 595 136.6
C 0 10 147019 1071.75 592 595 136.6
C 3 233 99850 726.49 592 595 136.6
D 12 235 1664776 11564.32 561 548 143.9
D 1 52 846685 5879.6 561 548 143.9
D 8 195 386072 2678.91 561 548 143.9

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