ASTROSAT CZTI

Data Quality Report

Orbit 08872

Creation date: 2024-06-27T15:38:28.351586
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/AS1G07_046T01_9000001236_08872cztM0_level2.evt modeM0/AS1G07_046T01_9000001236_08872cztM0_level2_quad_clean.evt
Size (bytes)700,787,52060,180,480
Size668.3 MB 57.4 MB
Events in quadrant A3,947,412371,032
Events in quadrant B9,794,185263,614
Events in quadrant C3,279,723375,634
Events in quadrant D3,769,251364,687

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159523
B0333662
C0134982
D0153602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63862133.335421%
B6386292045.725023%
C6386751.174444%
D63861061.659881%

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 7671 6386 99 99 1.29% 1.55%
B 7671 6386 2657 2657 34.64% 41.61%
C 7671 6386 0 0 0.00% 0.00%
D 7671 6386 26 26 0.34% 0.41%

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 8 5 351101 2009.72 864 846 174.3
A 15 174 261118 1493.41 864 846 174.3
A 5 16 9218 48.04 864 846 174.3
B 7 202 6750045 51681.65 695 681 130.6
B 4 48 286711 2190.21 695 681 130.6
B 0 213 44544 335.87 695 681 130.6
C 13 61 6494 29.36 839 846 192.4
C 10 22 3998 16.38 839 846 192.4
C 3 254 2569 8.96 839 846 192.4
D 8 195 369936 1790.59 841 821 206.1
D 7 71 97074 466.93 841 821 206.1
D 2 14 40825 194.06 841 821 206.1

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