ASTROSAT CZTI

Data Quality Report

Orbit 20378

Creation date: 2024-06-27T18:14:36.818301
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/AS1A05_205T01_9000003012_20378cztM0_level2.evt modeM0/AS1A05_205T01_9000003012_20378cztM0_level2_quad_clean.evt
Size (bytes)449,579,52094,521,600
Size428.8 MB 90.1 MB
Events in quadrant A3,088,456620,046
Events in quadrant B3,268,992636,805
Events in quadrant C3,070,631598,269
Events in quadrant D3,764,307572,669

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132202
B0136492
C0130462
D0154182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6223300.482083%
B6223520.835610%
C6223420.674916%
D6223570.915957%

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 7488 6224 2 2 0.03% 0.03%
B 7488 6224 10 10 0.13% 0.16%
C 7488 6224 0 0 0.00% 0.00%
D 7488 6224 37 37 0.49% 0.59%

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 5 16 28983 175.37 793 778 160.8
A 13 254 6990 38.62 793 778 160.8
A 0 226 6932 38.26 793 778 160.8
B 7 220 55362 363.16 798 780 150.3
B 15 222 21639 138.78 798 780 150.3
B 12 111 17200 109.25 798 780 150.3
C 14 238 118517 667.23 755 761 176.5
C 3 233 5864 28.91 755 761 176.5
C 13 61 5344 25.97 755 761 176.5
D 7 238 360161 1949.32 756 735 184.4
D 1 52 337886 1828.52 756 735 184.4
D 13 153 132903 716.8 756 735 184.4

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