ASTROSAT CZTI

Data Quality Report

Orbit 22900

Creation date: 2024-06-27T18:47:15.123981
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/AS1A08_009T01_9000003382_22900cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22900cztM0_level2_quad_clean.evt
Size (bytes)458,493,12098,069,760
Size437.3 MB 93.5 MB
Events in quadrant A2,990,831652,441
Events in quadrant B3,064,504664,268
Events in quadrant C3,007,481620,443
Events in quadrant D4,402,311600,903

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126651
B0128911
C0128831
D0171201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6186470.759780%
B6186661.066925%
C6186721.163919%
D61873105.010506%

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 7421 6187 0 0 0.00% 0.00%
B 7421 6187 2 2 0.03% 0.03%
C 7421 6187 18 18 0.24% 0.29%
D 7422 6188 230 230 3.10% 3.72%

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 0 23 17673 110.16 770 754 153.6
A 13 254 9913 59.64 770 754 153.6
A 0 226 7570 44.38 770 754 153.6
B 0 190 36558 255.1 759 741 140.4
B 0 228 19979 137.02 759 741 140.4
B 12 111 16768 114.15 759 741 140.4
C 14 238 117073 713.25 717 722 163.1
C 9 54 89885 546.58 717 722 163.1
C 0 10 6102 32.98 717 722 163.1
D 1 52 1076495 6164.41 723 700 174.5
D 13 153 402297 2301.19 723 700 174.5
D 10 230 49907 281.96 723 700 174.5

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