ASTROSAT CZTI

Data Quality Report

Orbit 52618

Creation date: 2025-06-20T16:27:23.296890
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_011T06_9000006478_52618cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52618cztM0_level2_quad_clean.evt
Size (bytes)964,126,08075,695,040
Size919.5 MB 72.2 MB
Events in quadrant A3,506,994641,781
Events in quadrant B6,659,182671,084
Events in quadrant C16,610,3471,630
Events in quadrant D8,366,721486,397

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157380
B0246680
C0540660
D0298150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7043851.206872%
B70433314.699702%
C7043703099.815420%
D7044128218.199886%

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 7043 7043 76 76 1.08% 1.08%
B 7043 7043 186 186 2.64% 2.64%
C 7042 7042 5484 5484 77.88% 77.88%
D 7044 7044 1130 1130 16.04% 16.04%

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 3 46 335439 1857.39 713 694 180.2
A 7 190 85913 472.85 713 694 180.2
A 12 3 64124 351.95 713 694 180.2
B 10 254 2840348 18959.07 699 676 149.8
B 8 234 256053 1705.02 699 676 149.8
B 10 247 192353 1279.73 699 676 149.8
C 15 248 16223570 730094.87 74 73 22.2
C 12 254 53857 2420.4 74 73 22.2
C 14 254 6612 294.27 74 73 22.2
D 2 62 1676509 9369.55 627 598 178.9
D 8 176 1087151 6074.62 627 598 178.9
D 2 37 1056520 5903.37 627 598 178.9

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