ASTROSAT CZTI

Data Quality Report

Orbit 51411

Creation date: 2025-03-31T06:40:25.932699
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_001T03_9000006456_51411cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51411cztM0_level2_quad_clean.evt
Size (bytes)699,125,76095,990,400
Size666.7 MB 91.5 MB
Events in quadrant A8,224,270615,946
Events in quadrant B4,542,480686,464
Events in quadrant C8,639,507503,714
Events in quadrant D3,924,311606,575

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0294282
B0186272
C0304962
D0170232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70906469.111425%
B70904916.925247%
C7089194527.436874%
D70891351.904359%

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 7630 7091 419 419 5.49% 5.91%
B 7630 7091 280 280 3.67% 3.95%
C 7629 7090 1436 1436 18.82% 20.25%
D 7629 7090 79 79 1.04% 1.11%

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 3016471 16972.71 716 696 177.7
A 4 175 683671 3843.77 716 696 177.7
A 15 174 467580 2627.61 716 696 177.7
B 5 172 434782 2851.1 719 693 152.3
B 5 185 385048 2524.45 719 693 152.3
B 6 51 332177 2177.19 719 693 152.3
C 15 179 2856696 15644.84 662 657 182.6
C 4 12 1278477 6999.65 662 657 182.6
C 1 60 478163 2615.69 662 657 182.6
D 2 249 199306 983.79 720 691 201.9
D 3 12 178830 882.37 720 691 201.9
D 8 176 174611 861.47 720 691 201.9

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