ASTROSAT CZTI

Data Quality Report

Orbit 19651

Creation date: 2024-06-27T18:05:13.635959
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/AS1A06_003T02_9000002926_19651cztM0_level2.evt modeM0/AS1A06_003T02_9000002926_19651cztM0_level2_quad_clean.evt
Size (bytes)584,265,60091,762,560
Size557.2 MB 87.5 MB
Events in quadrant A3,066,821602,930
Events in quadrant B3,199,321608,623
Events in quadrant C3,161,098583,150
Events in quadrant D7,809,338513,481

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137812
B0140002
C0138582
D0277932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6753360.533096%
B6753450.666371%
C6753590.873686%
D6753182126.965793%

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 7713 6753 0 0 0.00% 0.00%
B 7713 6753 3 3 0.04% 0.04%
C 7713 6753 0 0 0.00% 0.00%
D 7713 6753 1686 1686 21.86% 24.97%

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 0 226 6886 37.98 796 778 160.8
A 13 254 6883 37.96 796 778 160.8
A 3 137 6535 35.8 796 778 160.8
B 0 198 35118 224.91 795 775 152.7
B 7 220 21050 132.78 795 775 152.7
B 12 111 18109 113.52 795 775 152.7
C 14 238 118834 659.98 769 774 178.9
C 3 233 35050 191.61 769 774 178.9
C 9 221 11379 59.28 769 774 178.9
D 1 20 3746978 23976.43 643 625 156.3
D 1 52 1389594 8889.32 643 625 156.3
D 12 225 128687 819.59 643 625 156.3

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