ASTROSAT CZTI

Data Quality Report

Orbit 18250

Creation date: 2024-06-27T17:47:22.830386
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_019T01_9000002718_18250cztM0_level2.evt modeM0/AS1A05_019T01_9000002718_18250cztM0_level2_quad_clean.evt
Size (bytes)453,735,36065,139,840
Size432.7 MB 62.1 MB
Events in quadrant A3,267,970390,074
Events in quadrant B3,336,367396,350
Events in quadrant C3,353,256372,685
Events in quadrant D3,351,659369,209

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136202
B0138302
C0139572
D0140662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6359550.864916%
B6358721.132432%
C6358951.494181%
D6358851.336898%

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 7569 6360 2 2 0.03% 0.03%
B 7568 6359 2 2 0.03% 0.03%
C 7568 6359 1 1 0.01% 0.02%
D 7568 6359 54 54 0.71% 0.85%

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 15 174 42259 249.8 835 821 165.9
A 11 29 10109 55.99 835 821 165.9
A 4 2 8966 49.1 835 821 165.9
B 7 220 43788 270.86 838 816 158.6
B 12 111 18031 108.51 838 816 158.6
B 11 111 15874 94.91 838 816 158.6
C 14 238 125033 676.83 793 799 183.6
C 3 233 116876 632.39 793 799 183.6
C 0 207 18557 96.75 793 799 183.6
D 7 238 171426 875.17 801 779 195.0
D 1 52 83893 426.25 801 779 195.0
D 2 234 25003 124.23 801 779 195.0

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