ASTROSAT CZTI

Data Quality Report

Orbit 06965

Creation date: 2024-06-27T15:13:50.017661
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/AS1A02_090T02_9000000956_06965cztM0_level2.evt modeM0/AS1A02_090T02_9000000956_06965cztM0_level2_quad_clean.evt
Size (bytes)496,673,28075,029,760
Size473.7 MB 71.6 MB
Events in quadrant A3,328,580446,508
Events in quadrant B3,665,949448,914
Events in quadrant C3,289,427448,563
Events in quadrant D4,273,820431,430

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147153
B0156402
C0146752
D0172922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7123781.095044%
B71231301.825074%
C7123660.926576%
D7123891.249474%

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 7703 7124 0 0 0.00% 0.00%
B 7703 7124 10 10 0.13% 0.14%
C 7703 7124 0 0 0.00% 0.00%
D 7703 7124 7 7 0.09% 0.10%

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 13 14 9919 51.59 859 841 176.0
A 0 226 8281 42.28 859 841 176.0
A 12 194 7820 39.66 859 841 176.0
B 0 228 133302 795.84 863 841 166.4
B 0 189 61344 363.51 863 841 166.4
B 0 229 38273 224.9 863 841 166.4
C 1 16 6981 31.27 839 840 196.4
C 13 61 6621 29.43 839 840 196.4
C 12 4 3795 15.05 839 840 196.4
D 8 195 646524 3064.38 841 814 210.7
D 1 20 199431 942.59 841 814 210.7
D 2 136 184920 873.72 841 814 210.7

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