ASTROSAT CZTI

Data Quality Report

Orbit 24453

Creation date: 2024-06-27T19:06:10.541747
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/AS1T03_183T01_9000003606_24453cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24453cztM0_level2_quad_clean.evt
Size (bytes)521,161,920120,326,400
Size497.0 MB 114.8 MB
Events in quadrant A3,423,614797,559
Events in quadrant B3,513,625814,549
Events in quadrant C3,832,569766,901
Events in quadrant D4,504,675743,953

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153051
B0153721
C0161851
D0185531

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74881171.562500%
B74891431.909467%
C74892303.071171%
D74893264.353051%

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 7753 7490 0 0 0.00% 0.00%
B 7754 7491 0 0 0.00% 0.00%
C 7754 7491 47 47 0.61% 0.63%
D 7754 7491 174 174 2.24% 2.32%

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 4 2 15390 81.18 883 863 179.0
A 13 254 11263 58.12 883 863 179.0
A 3 137 8467 42.49 883 863 179.0
B 12 111 20884 118.77 885 862 168.6
B 11 111 18809 106.46 885 862 168.6
B 14 111 16728 94.12 885 862 168.6
C 10 9 271591 1353.4 854 857 200.0
C 14 238 135192 671.54 854 857 200.0
C 2 16 63695 314.13 854 857 200.0
D 12 218 826445 3996.93 856 830 206.6
D 1 52 192250 926.69 856 830 206.6
D 6 112 91514 439.02 856 830 206.6

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