ASTROSAT CZTI

Data Quality Report

Orbit 40789

Creation date: 2024-06-27T22:20:31.445860
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_095T02_9000005568_40789cztM0_level2.fits modeM0/AS1A12_095T02_9000005568_40789cztM0_level2_quad_clean.evt
Size (bytes)322,488,00087,926,400
Size307.5 MB 83.9 MB
Events in quadrant A2,972,607591,299
Events in quadrant B2,525,259606,467
Events in quadrant C2,745,700573,988
Events in quadrant D3,272,957512,465

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122633
B0112592
C0116752
D0136892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5400250.462963%
B5400190.351852%
C5400681.259259%
D54002694.981481%

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 7072 5401 13 13 0.18% 0.24%
B 7071 5399 6 6 0.08% 0.11%
C 7071 5399 70 70 0.99% 1.30%
D 7071 5400 253 253 3.58% 4.69%

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 526537 4358.78 583 570 120.7
A 13 248 92299 760.17 583 570 120.7
A 12 189 64786 532.17 583 570 120.7
B 0 230 65908 577.25 583 565 113.2
B 0 190 58229 509.41 583 565 113.2
B 5 255 41337 360.19 583 565 113.2
C 15 214 230724 1717.01 570 573 134.0
C 0 10 186930 1390.29 570 573 134.0
C 14 254 97830 725.57 570 573 134.0
D 2 153 519620 3818.67 558 543 135.9
D 2 249 286443 2103.27 558 543 135.9
D 12 233 144992 1062.66 558 543 135.9

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