ASTROSAT CZTI

Data Quality Report

Orbit 40969

Creation date: 2024-06-27T22:22:49.864956
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_052T04_9000005582_40969cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40969cztM0_level2_quad_clean.evt
Size (bytes)302,941,44084,960,000
Size288.9 MB 81.0 MB
Events in quadrant A2,754,020589,278
Events in quadrant B2,199,572594,770
Events in quadrant C2,587,829543,498
Events in quadrant D3,292,983503,832

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111673
B098772
C0107132
D0132102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4868110.225965%
B486890.184881%
C4868841.725555%
D48682354.827445%

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 6991 4869 7 7 0.10% 0.14%
B 6991 4869 1 1 0.01% 0.02%
C 6991 4869 83 83 1.19% 1.70%
D 6991 4869 231 231 3.30% 4.74%

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 471298 4176.01 549 539 112.7
A 12 189 157862 1395.58 549 539 112.7
A 13 254 7869 65.02 549 539 112.7
B 5 255 19402 181.26 545 531 104.1
B 0 190 18258 170.27 545 531 104.1
B 0 186 13756 127.03 545 531 104.1
C 0 10 232480 1899.35 526 531 122.1
C 15 214 212722 1737.56 526 531 122.1
C 14 254 80031 651.0 526 531 122.1
D 13 249 1065296 8432.23 521 507 126.3
D 2 249 121869 961.08 521 507 126.3
D 13 171 37133 290.05 521 507 126.3

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