ASTROSAT CZTI

Data Quality Report

Orbit 52546

Creation date: 2025-06-15T17:04:35.747875
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_52546cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52546cztM0_level2_quad_clean.evt
Size (bytes)790,038,72096,096,960
Size753.4 MB 91.6 MB
Events in quadrant A3,886,136695,595
Events in quadrant B5,187,219735,726
Events in quadrant C4,076,036670,089
Events in quadrant D15,498,602272,934

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172820
B0207000
C0179650
D0513380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76891552.015867%
B76893073.992717%
C76891311.703733%
D7689465860.580049%

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 7689 7689 119 119 1.55% 1.55%
B 7689 7689 219 219 2.85% 2.85%
C 7689 7689 108 108 1.40% 1.40%
D 7689 7689 4322 4322 56.21% 56.21%

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 4 61 457335 2341.14 785 764 195.0
A 5 243 62401 316.05 785 764 195.0
A 8 249 50404 254.54 785 764 195.0
B 10 44 950619 5734.04 773 748 165.7
B 10 254 446952 2693.58 773 748 165.7
B 7 0 182772 1098.82 773 748 165.7
C 13 3 543218 2598.28 757 748 208.8
C 4 5 262024 1251.44 757 748 208.8
C 15 248 162480 774.65 757 748 208.8
D 6 42 10025680 66267.99 519 494 151.3
D 15 125 957157 6323.69 519 494 151.3
D 8 176 935435 6180.1 519 494 151.3

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