ASTROSAT CZTI

Data Quality Report

Orbit 47750

Creation date: 2024-07-27T13:27:39.619945
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/AS1C09_004T04_9000006346_47750cztM0_level2.fits modeM0/AS1C09_004T04_9000006346_47750cztM0_level2_quad_clean.evt
Size (bytes)425,900,160105,200,640
Size406.2 MB 100.3 MB
Events in quadrant A6,302,883704,058
Events in quadrant B3,271,283723,454
Events in quadrant C2,780,711688,310
Events in quadrant D2,929,718637,240

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232502
B0139141
C0127711
D0131991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61871772.860837%
B61881252.020039%
C6188250.404008%
D6188651.050420%

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 7382 6188 14 14 0.19% 0.23%
B 7383 6188 29 29 0.39% 0.47%
C 7383 6188 11 11 0.15% 0.18%
D 7383 6189 41 41 0.56% 0.66%

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 3544081 24645.87 699 685 143.8
A 9 191 24526 165.82 699 685 143.8
A 13 248 21693 146.12 699 685 143.8
B 0 200 198529 1470.42 695 673 134.6
B 4 171 151914 1123.99 695 673 134.6
B 12 48 137192 1014.58 695 673 134.6
C 14 254 47446 293.8 681 683 159.2
C 12 2 43629 269.82 681 683 159.2
C 12 250 21675 131.89 681 683 159.2
D 2 37 92199 540.56 684 659 169.3
D 2 249 40435 234.88 684 659 169.3
D 2 234 29275 168.98 684 659 169.3

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