ASTROSAT CZTI

Data Quality Report

Orbit 34662

Creation date: 2022-02-25T04:58:21.475711
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/AS1T05_008T01_9000004956_34662cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34662cztM0_level2_quad_clean.evt
Size (bytes)1,466,475,840222,258,240
Size1.4 GB 212.0 MB
Events in quadrant A7,248,3531,441,961
Events in quadrant B11,804,9731,399,668
Events in quadrant C8,009,5651,446,231
Events in quadrant D16,284,2781,352,823

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03240
C03240
D03240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0324685
B0456474
C0334484
D0591064

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15814440.278234%
B1581413508.536740%
C158141240.784115%
D1581414989.472619%

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 21275 15818 19 19 0.09% 0.12%
B 21275 15818 877 877 4.12% 5.54%
C 21275 15818 64 64 0.30% 0.40%
D 21275 15818 1274 1274 5.99% 8.05%

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 10 83 105367 286.17 1804 1770 362.0
A 9 143 91922 249.03 1804 1770 362.0
A 15 174 32214 84.1 1804 1770 362.0
B 5 172 4055685 12098.41 1742 1694 335.1
B 5 255 540158 1606.95 1742 1694 335.1
B 4 232 107888 316.92 1742 1694 335.1
C 15 214 660462 1627.52 1749 1763 404.7
C 0 10 332107 816.22 1749 1763 404.7
C 14 67 120103 292.4 1749 1763 404.7
D 8 195 6617232 14936.85 1646 1611 442.9
D 12 233 1122447 2530.64 1646 1611 442.9
D 13 249 763529 1720.27 1646 1611 442.9

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