ASTROSAT CZTI

Data Quality Report

Orbit 41131

Creation date: 2024-06-27T22:24:51.406278
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_052T04_9000005602_41131cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41131cztM0_level2_quad_clean.evt
Size (bytes)363,841,92091,293,120
Size347.0 MB 87.1 MB
Events in quadrant A2,988,433627,038
Events in quadrant B3,614,979593,710
Events in quadrant C2,785,603597,536
Events in quadrant D3,641,394553,098

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123343
B0146642
C0118862
D0145052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5621150.266856%
B56214207.471980%
C5621611.085216%
D56211592.828678%

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 7083 5622 4 4 0.06% 0.07%
B 7083 5622 290 290 4.09% 5.16%
C 7083 5622 51 51 0.72% 0.91%
D 7083 5622 143 143 2.02% 2.54%

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 531053 4249.74 611 598 124.8
A 12 189 81413 647.45 611 598 124.8
A 13 254 9156 68.56 611 598 124.8
B 0 245 611242 5251.15 595 578 116.3
B 0 186 610748 5246.91 595 578 116.3
B 0 190 26395 222.0 595 578 116.3
C 15 214 241671 1754.41 592 596 137.4
C 0 10 167195 1212.41 592 596 137.4
C 9 54 24995 177.56 592 596 137.4
D 2 16 891632 6131.49 591 574 145.3
D 13 249 232347 1594.86 591 574 145.3
D 2 249 159140 1091.11 591 574 145.3

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