ASTROSAT CZTI

Data Quality Report

Orbit 27025

Creation date: 2024-06-27T19:35:40.353000
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/AS1A09_120T02_9000003904_27025cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27025cztM0_level2_quad_clean.evt
Size (bytes)601,125,120115,338,240
Size573.3 MB 110.0 MB
Events in quadrant A7,240,217670,319
Events in quadrant B3,731,830838,464
Events in quadrant C3,245,529802,113
Events in quadrant D3,582,020763,761

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256090
B0149060
C0132930
D0145010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5983178429.817817%
B59831682.807956%
C59841031.721257%
D59841312.189171%

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 7288 5983 1407 1407 19.31% 23.52%
B 7288 5983 33 33 0.45% 0.55%
C 7289 5984 0 0 0.00% 0.00%
D 7289 5984 62 62 0.85% 1.04%

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 14 235 4341412 30658.17 706 695 141.6
A 6 16 171779 1208.35 706 695 141.6
A 13 254 8583 55.71 706 695 141.6
B 0 189 511864 3344.77 819 803 152.8
B 12 111 17784 111.13 819 803 152.8
B 11 111 15824 98.31 819 803 152.8
C 14 238 129328 686.15 798 809 187.3
C 14 225 6772 31.84 798 809 187.3
C 13 61 5131 23.07 798 809 187.3
D 1 52 384834 2033.47 790 775 188.9
D 2 250 127520 671.08 790 775 188.9
D 12 233 64223 335.94 790 775 188.9

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