ASTROSAT CZTI

Data Quality Report

Orbit 22800

Creation date: 2024-06-27T18:45:57.406385
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/AS1A07_054T01_9000003370_22800cztM0_level2.evt modeM0/AS1A07_054T01_9000003370_22800cztM0_level2_quad_clean.evt
Size (bytes)502,398,720130,213,440
Size479.1 MB 124.2 MB
Events in quadrant A3,095,510911,994
Events in quadrant B3,249,837907,419
Events in quadrant C3,132,528855,623
Events in quadrant D5,303,508822,883

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130701
B0134361
C0131581
D0200471

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6392520.813517%
B6393711.110590%
C6393921.439074%
D63934777.461286%

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 7357 6393 0 0 0.00% 0.00%
B 7358 6394 4 4 0.05% 0.06%
C 7358 6394 6 6 0.08% 0.09%
D 7358 6394 280 280 3.81% 4.38%

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 13 254 12241 71.82 800 784 159.5
A 0 226 6958 38.7 800 784 159.5
A 11 47 6342 34.84 800 784 159.5
B 0 190 57092 387.53 788 771 145.3
B 0 228 31390 210.68 788 771 145.3
B 0 230 25517 170.27 788 771 145.3
C 14 238 122277 699.59 757 763 173.7
C 0 207 27645 154.77 757 763 173.7
C 10 22 18695 103.24 757 763 173.7
D 1 52 1890021 10371.54 755 732 182.2
D 13 172 208472 1140.42 755 732 182.2
D 6 112 78154 425.02 755 732 182.2

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