ASTROSAT CZTI

Data Quality Report

Orbit 51204

Creation date: 2025-03-17T13:38:55.208365
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/AS1C07_001T01_9000006454_51204cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51204cztM0_level2_quad_clean.evt
Size (bytes)653,572,80094,919,040
Size623.3 MB 90.5 MB
Events in quadrant A4,231,732641,115
Events in quadrant B5,637,528683,278
Events in quadrant C8,614,583516,158
Events in quadrant D5,192,979567,838

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173212
B0214352
C0301642
D0202843

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66701652.473763%
B66705077.601199%
C6670159523.913043%
D66694286.417754%

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 7835 6671 113 113 1.44% 1.69%
B 7835 6671 324 324 4.14% 4.86%
C 7835 6670 1512 1512 19.30% 22.67%
D 7834 6670 326 326 4.16% 4.89%

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 12 3 611509 3524.33 693 675 173.3
A 13 248 164579 945.68 693 675 173.3
A 3 114 124737 715.8 693 675 173.3
B 8 128 1320866 9062.66 687 665 145.7
B 10 254 465519 3191.04 687 665 145.7
B 5 172 180153 1232.11 687 665 145.7
C 4 12 3815437 22340.56 619 614 170.8
C 10 171 974800 5705.08 619 614 170.8
C 15 224 283225 1655.04 619 614 170.8
D 2 62 1127235 6010.97 656 632 187.4
D 8 176 463274 2468.42 656 632 187.4
D 3 12 341554 1818.98 656 632 187.4

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