ASTROSAT CZTI

Data Quality Report

Orbit 41100

Creation date: 2024-06-27T22:24:27.765889
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/AS1A12_044T19_9000005600_41100cztM0_level2.fits modeM0/AS1A12_044T19_9000005600_41100cztM0_level2_quad_clean.evt
Size (bytes)344,977,92089,792,640
Size329.0 MB 85.6 MB
Events in quadrant A3,038,367620,216
Events in quadrant B3,864,507592,272
Events in quadrant C2,755,904585,067
Events in quadrant D2,701,378553,386

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122503
B0150642
C0115362
D0116232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5261470.893366%
B52614007.603117%
C5261671.273522%
D5261480.912374%

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 7323 5262 35 35 0.48% 0.67%
B 7323 5262 341 341 4.66% 6.48%
C 7323 5262 57 57 0.78% 1.08%
D 7323 5262 41 41 0.56% 0.78%

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 540033 4352.24 600 587 123.9
A 13 248 124197 997.28 600 587 123.9
A 2 79 38849 308.7 600 587 123.9
B 0 186 1447937 12837.65 581 566 112.7
B 5 255 104321 920.27 581 566 112.7
B 15 85 17803 152.89 581 566 112.7
C 15 214 225053 1666.72 572 576 134.7
C 12 249 147822 1093.29 572 576 134.7
C 0 10 126599 935.71 572 576 134.7
D 13 249 140023 965.0 581 565 144.5
D 2 249 94872 652.57 581 565 144.5
D 1 52 65385 448.53 581 565 144.5

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