ASTROSAT CZTI

Data Quality Report

Orbit 33924

Creation date: 2024-06-27T20:54:26.042888
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_088T01_9000004846_33924cztM0_level2.evt modeM0/AS1T04_088T01_9000004846_33924cztM0_level2_quad_clean.evt
Size (bytes)495,737,28071,346,240
Size472.8 MB 68.0 MB
Events in quadrant A3,725,360449,328
Events in quadrant B3,142,312455,686
Events in quadrant C2,962,221450,498
Events in quadrant D4,811,116420,451

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150062
B0130781
C0122321
D0179891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54914438.067747%
B54911232.240029%
C5491490.892369%
D54913907.102531%

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 7014 5492 264 264 3.76% 4.81%
B 7014 5492 63 63 0.90% 1.15%
C 7014 5492 34 34 0.48% 0.62%
D 7014 5492 269 269 3.84% 4.90%

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 1379696 11419.72 600 588 120.8
A 13 6 11978 94.32 600 588 120.8
A 7 16 10057 78.41 600 588 120.8
B 5 172 473109 4012.26 615 598 117.8
B 15 35 107839 910.62 615 598 117.8
B 0 219 34864 290.97 615 598 117.8
C 15 214 235476 1677.79 601 605 140.0
C 0 10 185923 1323.81 601 605 140.0
C 3 233 127906 909.37 601 605 140.0
D 8 195 767332 5436.05 582 565 141.1
D 2 250 442201 3131.01 582 565 141.1
D 12 235 426014 3016.25 582 565 141.1

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