ASTROSAT CZTI

Data Quality Report

Orbit 50193

Creation date: 2025-01-08T05:16:10.927470
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_003T01_9000006442_50193cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50193cztM0_level2_quad_clean.evt
Size (bytes)1,584,944,64063,264,960
Size1.5 GB 60.3 MB
Events in quadrant A15,648,511297,992
Events in quadrant B8,069,070688,183
Events in quadrant C15,601,686239,721
Events in quadrant D18,742,277138,197

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0519401
B0294300
C0518020
D0611310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7923492862.198662%
B7924121515.333165%
C7924542168.412418%
D7924659883.266027%

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 7923 7923 4284 4284 54.07% 54.07%
B 7924 7924 929 929 11.72% 11.72%
C 7924 7924 4246 4246 53.58% 53.58%
D 7923 7923 5870 5870 74.09% 74.09%

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 0 98 9976162 68518.88 568 553 145.6
A 12 250 483075 3314.27 568 553 145.6
A 3 130 468217 3212.22 568 553 145.6
B 4 206 1944569 12018.91 763 736 161.7
B 3 249 1293926 7995.92 763 736 161.7
B 10 28 468794 2894.05 763 736 161.7
C 4 111 6446740 49276.3 449 447 130.8
C 15 197 2132313 16296.26 449 447 130.8
C 15 213 1075585 8218.5 449 447 130.8
D 15 168 4656229 33445.9 476 458 139.2
D 7 61 3416995 24543.55 476 458 139.2
D 15 108 1709842 12279.79 476 458 139.2

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