ASTROSAT CZTI

Data Quality Report

Orbit 31290

Creation date: 2024-06-27T20:26:13.496708
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/AS1T04_024T01_9000004530_31290cztM0_level2.evt modeM0/AS1T04_024T01_9000004530_31290cztM0_level2_quad_clean.evt
Size (bytes)516,021,12095,866,560
Size492.1 MB 91.4 MB
Events in quadrant A3,071,798627,289
Events in quadrant B5,091,198626,972
Events in quadrant C3,736,112585,876
Events in quadrant D3,280,011601,773

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134371
B0202921
C0153881
D0144521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6615240.362812%
B6616981.481258%
C66163144.746070%
D6616270.408102%

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 7625 6616 0 0 0.00% 0.00%
B 7626 6617 12 12 0.16% 0.18%
C 7626 6617 11 11 0.14% 0.17%
D 7626 6617 11 11 0.14% 0.17%

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 13 254 12759 75.08 795 780 159.5
A 3 137 8090 45.82 795 780 159.5
A 0 226 6667 36.9 795 780 159.5
B 6 159 1778476 11765.26 787 765 151.1
B 4 80 199764 1317.01 787 765 151.1
B 12 111 18846 119.66 787 765 151.1
C 3 233 395852 2266.56 747 753 174.3
C 14 238 201090 1149.27 747 753 174.3
C 14 254 109334 622.89 747 753 174.3
D 8 195 337059 1802.29 762 743 186.6
D 12 233 25458 132.45 762 743 186.6
D 2 234 23697 123.01 762 743 186.6

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