ASTROSAT CZTI

Data Quality Report

Orbit 38277

Creation date: 2024-06-27T21:50:39.500544
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/AS1A07_145T01_9000005370_38277cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38277cztM0_level2_quad_clean.evt
Size (bytes)371,370,24092,286,720
Size354.2 MB 88.0 MB
Events in quadrant A2,802,954615,441
Events in quadrant B3,103,733626,940
Events in quadrant C2,609,259614,186
Events in quadrant D4,805,404554,655

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116213
B0130242
C0110962
D0187492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5474150.274023%
B5474851.552795%
C547490.164414%
D54741743.178663%

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 7176 5475 10 10 0.14% 0.18%
B 7176 5475 47 47 0.65% 0.86%
C 7176 5475 5 5 0.07% 0.09%
D 7176 5475 171 171 2.38% 3.12%

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 374666 3023.78 607 595 123.7
A 12 189 34812 276.59 607 595 123.7
A 9 143 28626 226.59 607 595 123.7
B 5 184 472700 4021.49 605 589 117.4
B 0 229 73595 621.87 605 589 117.4
B 5 172 55360 466.54 605 589 117.4
C 15 214 229758 1654.77 596 601 138.5
C 15 208 23818 167.65 596 601 138.5
C 0 10 17919 125.06 596 601 138.5
D 10 203 1548016 10749.37 588 570 144.0
D 2 16 305903 2121.0 588 570 144.0
D 12 235 202728 1404.3 588 570 144.0

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