ASTROSAT CZTI

Data Quality Report

Orbit 04356

Creation date: 2024-06-27T14:40:48.482783
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/AS1G05_219T01_9000000540_04356cztM0_level2.evt modeM0/AS1G05_219T01_9000000540_04356cztM0_level2_quad_clean.evt
Size (bytes)624,119,04088,272,000
Size595.2 MB 84.2 MB
Events in quadrant A3,645,891588,271
Events in quadrant B3,572,675585,481
Events in quadrant C7,569,791486,416
Events in quadrant D3,665,952551,874

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150323
B0145842
C0268882
D0150032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66041121.695942%
B6604871.317383%
C6604162724.636584%
D66041111.680800%

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 7879 6604 17 17 0.22% 0.26%
B 7879 6604 8 8 0.10% 0.12%
C 7878 6603 1400 1400 17.77% 21.20%
D 7879 6604 46 46 0.58% 0.70%

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 13 224343 1303.84 850 832 171.4
A 13 251 59516 342.33 850 832 171.4
A 8 15 39805 227.35 850 832 171.4
B 15 204 114650 709.18 845 825 160.5
B 14 167 96887 598.51 845 825 160.5
B 4 48 49271 301.84 845 825 160.5
C 9 247 4743873 28657.02 715 718 165.5
C 9 16 15416 88.8 715 718 165.5
C 10 65 9266 51.64 715 718 165.5
D 2 136 178962 899.78 818 797 198.0
D 4 95 83286 416.59 818 797 198.0
D 12 79 66151 330.05 818 797 198.0

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