ASTROSAT CZTI

Data Quality Report

Orbit 08638

Creation date: 2024-06-27T15:35:17.532872
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_024T01_9000001206_08638cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08638cztM0_level2_quad_clean.evt
Size (bytes)450,702,720121,219,200
Size429.8 MB 115.6 MB
Events in quadrant A2,920,521809,805
Events in quadrant B3,670,500815,758
Events in quadrant C3,283,252816,906
Events in quadrant D3,338,275780,479

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132803
B0154092
C0142312
D0145622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6427390.606815%
B64272113.283025%
C64271432.224988%
D64271362.116073%

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 7577 6428 1 1 0.01% 0.02%
B 7577 6427 175 175 2.31% 2.72%
C 7577 6427 96 96 1.27% 1.49%
D 7577 6427 93 93 1.23% 1.45%

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 5 16 29302 189.24 745 730 151.0
A 13 248 13223 82.74 745 730 151.0
A 15 174 10541 64.98 745 730 151.0
B 0 228 490494 3469.07 746 729 141.2
B 0 168 80759 566.86 746 729 141.2
B 15 255 67961 476.21 746 729 141.2
C 8 208 396317 2335.24 736 739 169.4
C 14 67 7606 40.54 736 739 169.4
C 13 61 5797 29.86 736 739 169.4
D 9 64 151141 837.3 733 708 179.7
D 7 71 75990 419.01 733 708 179.7
D 2 16 71809 395.74 733 708 179.7

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