ASTROSAT CZTI

Data Quality Report

Orbit 50220

Creation date: 2025-01-10T01:11:19.855399
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_003T01_9000006442_50220cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50220cztM0_level2_quad_clean.evt
Size (bytes)1,046,234,88072,676,800
Size997.8 MB 69.3 MB
Events in quadrant A8,608,474458,516
Events in quadrant B5,226,403638,732
Events in quadrant C12,507,303271,287
Events in quadrant D11,878,733372,189

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301091
B0200871
C0416981
D0397932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6586197429.972669%
B65864827.318555%
C6586377557.318555%
D6585259339.377373%

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 7286 6586 1837 1837 25.21% 27.89%
B 7286 6587 315 315 4.32% 4.78%
C 7285 6585 3674 3674 50.43% 55.79%
D 7285 6585 2660 2660 36.51% 40.39%

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 0 98 2152325 14630.38 595 580 147.1
A 4 249 1805136 12269.73 595 580 147.1
A 8 38 519878 3530.87 595 580 147.1
B 4 206 1849359 12935.14 677 655 142.9
B 5 185 168217 1172.41 677 655 142.9
B 3 249 69188 479.52 677 655 142.9
C 4 111 5862525 47062.7 444 441 124.6
C 15 197 1785889 14334.15 444 441 124.6
C 15 213 811006 6507.48 444 441 124.6
D 15 108 2518753 15183.77 580 559 165.8
D 7 61 1815481 10943.3 580 559 165.8
D 15 94 935736 5638.77 580 559 165.8

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