ASTROSAT CZTI

Data Quality Report

Orbit 46588

Creation date: 2024-06-27T23:25:07.609575
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/AS1A13_092T03_9000006234_46588cztM0_level2.fits modeM0/AS1A13_092T03_9000006234_46588cztM0_level2_quad_clean.evt
Size (bytes)476,130,240101,318,400
Size454.1 MB 96.6 MB
Events in quadrant A6,070,616657,723
Events in quadrant B3,396,245705,276
Events in quadrant C3,040,378681,711
Events in quadrant D4,628,518582,506

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022981799
B014797398
C013907354
D019085915

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01330
B01321
C01340
D01333

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62642163.448276%
B6326831.312046%
C6338400.631114%
D62563705.914322%

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 7648 6465 101 101 1.32% 1.56%
B 7649 6470 20 20 0.26% 0.31%
C 7648 6470 31 31 0.41% 0.48%
D 7648 6440 321 321 4.20% 4.98%

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 3274661 22565.54 691 676 145.1
A 15 235 54794 373.0 691 676 145.1
A 2 79 19091 126.92 691 676 145.1
B 2 2 166529 1183.14 708 684 140.2
B 0 189 145411 1032.48 708 684 140.2
B 15 201 58851 414.96 708 684 140.2
C 14 254 124933 750.18 699 702 165.6
C 3 233 83123 497.71 699 702 165.6
C 12 249 57630 343.76 699 702 165.6
D 1 52 585606 3484.83 668 650 167.9
D 13 249 561049 3338.54 668 650 167.9
D 2 120 190642 1131.86 668 650 167.9

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