ASTROSAT CZTI

Data Quality Report

Orbit 43486

Creation date: 2024-06-27T22:52:32.869283
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_018T01_9000005874_43486cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43486cztM0_level2_quad_clean.evt
Size (bytes)382,000,32089,003,520
Size364.3 MB 84.9 MB
Events in quadrant A3,282,260606,415
Events in quadrant B2,882,908614,913
Events in quadrant C2,597,437586,200
Events in quadrant D4,959,806510,960

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132772
B0121052
C0110972
D0185362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5376190.353423%
B5376350.651042%
C5376200.372024%
D53764257.905506%

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 7200 5377 5 5 0.07% 0.09%
B 7200 5377 22 22 0.31% 0.41%
C 7200 5377 17 17 0.24% 0.32%
D 7200 5377 410 410 5.69% 7.63%

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 647400 5420.71 580 568 119.3
A 15 222 261775 2189.02 580 568 119.3
A 15 237 118015 984.25 580 568 119.3
B 0 189 179550 1628.64 578 562 109.9
B 0 190 109082 987.44 578 562 109.9
B 0 186 86329 780.41 578 562 109.9
C 15 214 219991 1660.58 569 573 132.1
C 3 233 84675 636.49 569 573 132.1
C 12 249 49618 371.18 569 573 132.1
D 1 52 1224481 9073.65 551 535 134.9
D 2 16 688775 5102.23 551 535 134.9
D 1 47 245780 1818.11 551 535 134.9

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