ASTROSAT CZTI

Data Quality Report

Orbit 21755

Creation date: 2024-06-27T18:31:50.654906
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_005T01_9000003224_21755cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21755cztM0_level2_quad_clean.evt
Size (bytes)635,912,64094,271,040
Size606.5 MB 89.9 MB
Events in quadrant A3,410,193627,621
Events in quadrant B3,534,566651,164
Events in quadrant C3,293,998605,341
Events in quadrant D8,607,174544,384

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141342
B0144202
C0135672
D0298882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6111691.129111%
B6111941.538210%
C61111071.750941%
D6111171228.015055%

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 7456 6112 0 0 0.00% 0.00%
B 7456 6112 8 8 0.11% 0.13%
C 7456 6112 0 0 0.00% 0.00%
D 7456 6112 1331 1331 17.85% 21.78%

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 15 236 166049 992.62 840 825 166.5
A 13 254 11598 64.72 840 825 166.5
A 0 226 7502 40.11 840 825 166.5
B 3 64 87670 549.53 849 831 158.0
B 0 230 32481 200.28 849 831 158.0
B 0 190 32453 200.11 849 831 158.0
C 14 238 130168 695.7 806 815 185.9
C 8 128 9687 47.72 806 815 185.9
C 13 61 5692 26.23 806 815 185.9
D 7 238 3045874 17418.21 717 697 174.8
D 7 38 1144138 6540.41 717 697 174.8
D 1 52 656526 3751.3 717 697 174.8

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