ASTROSAT CZTI

Data Quality Report

Orbit 50665

Creation date: 2025-02-08T23:50:21.549349
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/AS1T05_241T01_9000006446_50665cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50665cztM0_level2_quad_clean.evt
Size (bytes)666,630,72087,897,600
Size635.7 MB 83.8 MB
Events in quadrant A4,643,057628,095
Events in quadrant B10,064,387403,458
Events in quadrant C4,615,520609,261
Events in quadrant D4,838,495557,662

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182851
B0343881
C0181211
D0189881

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66401602.409639%
B6641303045.625659%
C66411752.635145%
D66413445.179943%

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 7695 6641 108 108 1.40% 1.63%
B 7696 6642 2535 2535 32.94% 38.17%
C 7696 6642 144 144 1.87% 2.17%
D 7696 6642 301 301 3.91% 4.53%

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 9 191 788088 4579.45 702 686 171.9
A 4 220 170370 986.86 702 686 171.9
A 8 38 148313 858.58 702 686 171.9
B 4 170 4576109 38621.03 555 537 118.5
B 5 172 2058854 17373.64 555 537 118.5
B 3 249 515858 4349.67 555 537 118.5
C 0 224 670734 3555.92 693 688 188.4
C 13 113 239538 1267.57 693 688 188.4
C 15 231 239433 1267.01 693 688 188.4
D 10 102 1112708 5877.11 679 655 189.2
D 3 12 267691 1411.26 679 655 189.2
D 2 153 129137 679.02 679 655 189.2

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