ASTROSAT CZTI

Data Quality Report

Orbit 24881

Creation date: 2024-06-27T19:10:58.553490
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_027T16_9000003642_24881cztM0_level2.evt modeM0/AS1A07_027T16_9000003642_24881cztM0_level2_quad_clean.evt
Size (bytes)519,459,840122,993,280
Size495.4 MB 117.3 MB
Events in quadrant A3,253,136826,872
Events in quadrant B3,338,486848,793
Events in quadrant C3,879,615820,561
Events in quadrant D4,839,321794,917

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134532
B0138022
C0154252
D0186402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A621190.144904%
B6211280.450813%
C62111702.737079%
D62112714.363227%

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 7566 6212 0 0 0.00% 0.00%
B 7566 6212 1 1 0.01% 0.02%
C 7566 6212 29 29 0.38% 0.47%
D 7566 6212 259 259 3.42% 4.17%

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 6 16 16954 98.69 837 825 163.4
A 13 254 9833 55.12 837 825 163.4
A 0 226 7095 38.36 837 825 163.4
B 0 190 30727 192.96 837 817 155.0
B 12 111 17975 110.69 837 817 155.0
B 11 111 16106 98.64 837 817 155.0
C 7 247 492042 2567.11 832 839 191.3
C 14 238 133965 695.74 832 839 191.3
C 0 10 10457 50.27 832 839 191.3
D 1 52 1102594 5523.11 832 810 199.5
D 8 195 504349 2524.18 832 810 199.5
D 7 238 94452 469.42 832 810 199.5

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