ASTROSAT CZTI

Data Quality Report

Orbit 42002

Creation date: 2024-06-27T22:35:36.804660
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_011T26_9000005732_42002cztM0_level2.fits modeM0/AS1A12_011T26_9000005732_42002cztM0_level2_quad_clean.evt
Size (bytes)396,875,52094,141,440
Size378.5 MB 89.8 MB
Events in quadrant A3,241,357638,735
Events in quadrant B4,078,514623,769
Events in quadrant C2,719,875624,500
Events in quadrant D4,187,874547,078

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133462
B0162732
C0120002
D0165992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5954230.386295%
B59543235.424924%
C595430.050386%
D59543686.180719%

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 7266 5955 7 7 0.10% 0.12%
B 7266 5955 222 222 3.06% 3.73%
C 7266 5955 0 0 0.00% 0.00%
D 7266 5955 340 340 4.68% 5.71%

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 650841 4961.65 635 619 131.0
A 15 223 49193 370.65 635 619 131.0
A 2 79 42685 320.99 635 619 131.0
B 0 186 1267158 10595.06 620 604 119.5
B 0 190 212548 1772.97 620 604 119.5
B 5 255 101268 842.08 620 604 119.5
C 15 214 249465 1697.61 622 624 146.6
C 15 111 17549 115.46 622 624 146.6
C 8 229 9461 60.29 622 624 146.6
D 12 2 506731 3324.83 611 593 152.2
D 1 52 446339 2928.12 611 593 152.2
D 13 249 224091 1468.16 611 593 152.2

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