ASTROSAT CZTI

Data Quality Report

Orbit 52558

Creation date: 2025-06-16T12:04:02.150250
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_52558cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52558cztM0_level2_quad_clean.evt
Size (bytes)820,330,56071,683,200
Size782.3 MB 68.4 MB
Events in quadrant A2,767,195586,496
Events in quadrant B6,742,319515,643
Events in quadrant C8,948,885359,026
Events in quadrant D11,431,318279,834

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130581
B0242471
C0309934
D0382491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6148661.073520%
B6149127120.670028%
C6148230437.475602%
D6148326953.171763%

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 6783 6149 17 17 0.25% 0.28%
B 6784 6150 967 967 14.25% 15.72%
C 6783 6149 2016 2016 29.72% 32.79%
D 6782 6148 2953 2953 43.54% 48.03%

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 79682 494.58 637 619 159.9
A 3 14 37096 228.18 637 619 159.9
A 13 248 25404 155.04 637 619 159.9
B 10 44 2705147 22047.46 574 554 122.7
B 4 170 1460921 11904.71 574 554 122.7
B 4 81 55128 444.88 574 554 122.7
C 15 248 5802000 41434.79 502 497 140.0
C 4 5 355503 2535.48 502 497 140.0
C 13 3 304653 2172.31 502 497 140.0
D 6 42 5528515 41685.37 456 435 132.6
D 8 176 1792472 13513.14 456 435 132.6
D 2 62 1177450 8875.47 456 435 132.6

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