ASTROSAT CZTI

Data Quality Report

Orbit 44487

Creation date: 2024-06-27T23:03:48.902470
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/AS1A13_072T03_9000006000_44487cztM0_level2.fits modeM0/AS1A13_072T03_9000006000_44487cztM0_level2_quad_clean.evt
Size (bytes)2,187,754,560537,143,040
Size2.0 GB 512.3 MB
Events in quadrant A22,849,7373,613,555
Events in quadrant B16,715,1413,683,656
Events in quadrant C16,050,2283,553,615
Events in quadrant D22,775,1203,108,102

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06800
B06800
C06800
D06800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0944125
B0739705
C0719785
D0924815

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A335454081.216277%
B335468772.614321%
C335462640.786979%
D3354621336.358433%

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 38790 33578 14 14 0.04% 0.04%
B 38791 33579 455 455 1.17% 1.36%
C 38791 33579 118 118 0.30% 0.35%
D 38791 33579 1629 1629 4.20% 4.85%

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 8452827 11029.52 3711 3631 766.1
A 0 243 57956 70.92 3711 3631 766.1
A 3 137 42691 50.99 3711 3631 766.1
B 5 172 1683893 2340.23 3667 3553 718.0
B 0 189 165723 225.86 3667 3553 718.0
B 0 168 164492 224.14 3667 3553 718.0
C 14 254 810763 951.86 3624 3650 847.9
C 3 233 694072 814.24 3624 3650 847.9
C 2 14 148657 171.01 3624 3650 847.9
D 13 249 3232760 3673.14 3521 3417 879.2
D 1 52 2589956 2942.0 3521 3417 879.2
D 2 249 2520797 2863.33 3521 3417 879.2

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