ASTROSAT CZTI

Data Quality Report

Orbit 38659

Creation date: 2024-06-27T21:54:45.716620
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_054T01_9000005392_38659cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38659cztM0_level2_quad_clean.evt
Size (bytes)363,384,00093,139,200
Size346.5 MB 88.8 MB
Events in quadrant A3,192,625635,934
Events in quadrant B2,595,368643,030
Events in quadrant C3,033,630611,098
Events in quadrant D4,190,967535,691

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131653
B0115832
C0125522
D0163352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5634440.780973%
B5634240.425985%
C56341001.774938%
D56344798.501952%

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 7186 5634 27 27 0.38% 0.48%
B 7186 5634 14 14 0.19% 0.25%
C 7186 5634 86 86 1.20% 1.53%
D 7186 5634 498 498 6.93% 8.84%

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 415404 3208.15 631 620 129.3
A 9 143 150301 1157.71 631 620 129.3
A 13 248 148414 1143.11 631 620 129.3
B 5 184 40550 322.95 629 612 123.7
B 5 172 38211 304.04 629 612 123.7
B 4 251 15787 122.71 629 612 123.7
C 2 16 355303 2447.28 614 617 144.9
C 15 214 226216 1556.6 614 617 144.9
C 14 254 27001 182.05 614 617 144.9
D 12 6 1238844 8324.73 598 579 148.7
D 12 233 106045 709.04 598 579 148.7
D 1 232 102204 683.21 598 579 148.7

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