ASTROSAT CZTI

Data Quality Report

Orbit 19364

Creation date: 2024-06-27T18:01:58.779682
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_025T17_9000002858_19364cztM0_level2.evt modeM0/AS1A05_025T17_9000002858_19364cztM0_level2_quad_clean.evt
Size (bytes)608,760,000126,144,000
Size580.6 MB 120.3 MB
Events in quadrant A3,050,153884,314
Events in quadrant B3,153,966893,034
Events in quadrant C3,092,194856,130
Events in quadrant D8,719,698753,248

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131441
B0133261
C0132731
D0302511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6212681.094656%
B6212951.529298%
C62121171.883451%
D6213138622.308064%

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 7332 6212 0 0 0.00% 0.00%
B 7332 6212 12 12 0.16% 0.19%
C 7332 6212 1 1 0.01% 0.02%
D 7333 6213 1238 1238 16.88% 19.93%

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 13 254 7193 40.75 791 775 157.5
A 0 226 6731 37.82 791 775 157.5
A 12 194 5799 31.9 791 775 157.5
B 3 64 40388 273.55 780 761 144.9
B 7 220 19214 127.38 780 761 144.9
B 12 111 16279 107.12 780 761 144.9
C 14 238 120302 685.73 755 762 174.3
C 3 233 16028 87.57 755 762 174.3
C 9 160 5897 29.46 755 762 174.3
D 10 66 3181242 18487.9 716 698 172.0
D 7 238 1396430 8113.12 716 698 172.0
D 1 52 915137 5315.46 716 698 172.0

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