ASTROSAT CZTI

Data Quality Report

Orbit 41009

Creation date: 2024-06-27T22:23:49.926073
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_042T01_9000005588_41009cztM0_level2.fits modeM0/AS1A12_042T01_9000005588_41009cztM0_level2_quad_clean.evt
Size (bytes)323,366,40094,057,920
Size308.4 MB 89.7 MB
Events in quadrant A2,923,831641,907
Events in quadrant B2,548,287654,255
Events in quadrant C2,966,691611,446
Events in quadrant D3,109,664561,462

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119083
B0112072
C0120322
D0128862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A540960.110926%
B5409160.295803%
C5409130.240340%
D54091102.033648%

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 7322 5410 1 1 0.01% 0.02%
B 7322 5410 8 8 0.11% 0.15%
C 7322 5410 10 10 0.14% 0.18%
D 7322 5410 92 92 1.26% 1.70%

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 530875 4292.93 614 601 123.5
A 12 189 14928 115.98 614 601 123.5
A 13 254 8478 63.77 614 601 123.5
B 5 255 98464 846.66 606 590 115.6
B 0 186 50354 430.48 606 590 115.6
B 12 111 14146 117.27 606 590 115.6
C 15 214 234747 1718.25 593 595 136.3
C 10 70 171663 1255.33 593 595 136.3
C 3 233 140799 1028.84 593 595 136.3
D 2 249 298301 2053.25 594 576 145.0
D 13 249 125665 862.67 594 576 145.0
D 12 233 105746 725.3 594 576 145.0

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