ASTROSAT CZTI

Data Quality Report

Orbit 14906

Creation date: 2024-06-27T17:01:09.324658
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/AS1A04_011T09_9000002202_14906cztM0_level2.evt modeM0/AS1A04_011T09_9000002202_14906cztM0_level2_quad_clean.evt
Size (bytes)479,903,04081,671,040
Size457.7 MB 77.9 MB
Events in quadrant A3,136,989527,821
Events in quadrant B4,721,328492,327
Events in quadrant C3,179,287500,968
Events in quadrant D3,060,430504,064

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132863
B0181662
C0133682
D0133312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6412300.467873%
B64123906.082346%
C6412380.592639%
D6412190.296319%

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 7593 6414 0 0 0.00% 0.00%
B 7593 6414 228 228 3.00% 3.55%
C 7593 6414 13 13 0.17% 0.20%
D 7593 6414 2 2 0.03% 0.03%

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 11 29 13381 77.52 810 794 162.4
A 0 226 7024 38.37 810 794 162.4
A 3 1 6750 36.68 810 794 162.4
B 10 16 1170883 7956.74 782 764 147.1
B 3 64 286843 1945.32 782 764 147.1
B 0 229 134661 910.49 782 764 147.1
C 3 233 165984 933.09 771 778 177.1
C 13 61 5510 26.73 771 778 177.1
C 7 247 4849 22.99 771 778 177.1
D 13 104 52935 283.4 774 755 184.1
D 7 254 24179 127.22 774 755 184.1
D 2 234 23151 121.64 774 755 184.1

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