ASTROSAT CZTI

Data Quality Report

Orbit 20556

Creation date: 2024-06-27T18:16:50.238963
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_072T04_9000003040_20556cztM0_level2.evt modeM0/AS1A05_072T04_9000003040_20556cztM0_level2_quad_clean.evt
Size (bytes)434,041,92093,657,600
Size413.9 MB 89.3 MB
Events in quadrant A3,054,154603,225
Events in quadrant B3,226,391611,542
Events in quadrant C3,133,556594,709
Events in quadrant D3,290,979575,672

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133343
B0137382
C0134082
D0142352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6472170.262670%
B6472340.525340%
C6472620.957973%
D6472701.081582%

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 7547 6473 0 0 0.00% 0.00%
B 7547 6473 6 6 0.08% 0.09%
C 7547 6473 0 0 0.00% 0.00%
D 7547 6473 31 31 0.41% 0.48%

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 8 205 7280 40.68 790 775 159.9
A 0 226 6873 38.13 790 775 159.9
A 3 137 6484 35.7 790 775 159.9
B 0 197 34696 227.41 791 772 149.2
B 3 64 30818 201.41 791 772 149.2
B 12 111 17797 114.13 791 772 149.2
C 14 238 121640 674.75 769 776 179.1
C 8 208 10663 55.2 769 776 179.1
C 13 61 5421 25.93 769 776 179.1
D 1 52 135989 723.55 770 750 186.9
D 13 153 123581 657.16 770 750 186.9
D 13 104 49006 258.18 770 750 186.9

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