ASTROSAT CZTI

Data Quality Report

Orbit 39977

Creation date: 2024-06-27T22:10:50.252456
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/AS1A12_054T03_9000005516_39977cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39977cztM0_level2_quad_clean.evt
Size (bytes)352,641,60094,893,120
Size336.3 MB 90.5 MB
Events in quadrant A3,011,602633,516
Events in quadrant B2,962,252646,722
Events in quadrant C2,884,781623,764
Events in quadrant D3,744,425564,132

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126733
B0127382
C0122052
D0152762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5786160.276530%
B5786661.140684%
C5786490.846872%
D57862424.182510%

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 8831 5788 7 7 0.08% 0.12%
B 8831 5786 32 32 0.36% 0.55%
C 8830 5785 43 43 0.49% 0.74%
D 8831 5786 212 212 2.40% 3.66%

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 10 83 479482 3646.27 637 625 131.3
A 6 10 52813 397.39 637 625 131.3
A 15 191 12033 86.87 637 625 131.3
B 4 171 304302 2456.22 633 616 123.6
B 15 201 72722 583.2 633 616 123.6
B 0 221 26991 213.32 633 616 123.6
C 15 214 240904 1634.39 624 626 147.0
C 0 10 125353 848.4 624 626 147.0
C 14 254 38421 257.08 624 626 147.0
D 2 250 296932 1976.78 613 596 149.9
D 12 233 246375 1639.52 613 596 149.9
D 12 227 227334 1512.51 613 596 149.9

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