ASTROSAT CZTI

Data Quality Report

Orbit 45817

Creation date: 2024-06-27T23:16:30.068551
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/AS1T05_185T01_9000006128_45817cztM0_level2.fits modeM0/AS1T05_185T01_9000006128_45817cztM0_level2_quad_clean.evt
Size (bytes)429,842,88082,578,240
Size409.9 MB 78.8 MB
Events in quadrant A4,362,818557,713
Events in quadrant B3,639,959570,422
Events in quadrant C2,337,058549,723
Events in quadrant D5,167,042457,029

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166131
B0144812
C0107471
D0190391

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5212991.899463%
B52112154.125888%
C5211380.729227%
D521155410.631357%

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 6082 5213 13 13 0.21% 0.25%
B 6081 5212 101 101 1.66% 1.94%
C 6081 5212 15 15 0.25% 0.29%
D 6080 5210 427 427 7.02% 8.20%

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 10 83 2124307 17807.73 574 561 119.3
A 13 254 8354 65.34 574 561 119.3
A 3 137 6606 50.69 574 561 119.3
B 3 112 1052646 9343.16 569 553 112.6
B 0 171 155825 1378.9 569 553 112.6
B 0 190 40042 350.68 569 553 112.6
C 12 250 55250 406.12 571 575 134.6
C 2 14 30657 223.45 571 575 134.6
C 5 128 9192 64.01 571 575 134.6
D 11 241 1409128 10312.84 536 520 136.6
D 13 249 635079 4645.8 536 520 136.6
D 12 2 518116 3789.48 536 520 136.6

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