ASTROSAT CZTI

Data Quality Report

Orbit 11915

Creation date: 2024-06-27T16:20:01.967838
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_088T05_9000001764_11915cztM0_level2.evt modeM0/AS1A04_088T05_9000001764_11915cztM0_level2_quad_clean.evt
Size (bytes)609,289,92081,622,080
Size581.1 MB 77.8 MB
Events in quadrant A3,674,272501,220
Events in quadrant B4,950,529474,408
Events in quadrant C3,297,852509,776
Events in quadrant D6,038,383481,236

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157723
B0196272
C0149092
D0227632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72501241.710345%
B72505717.875862%
C7250470.648276%
D725084411.641379%

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 7921 7251 0 0 0.00% 0.00%
B 7921 7251 280 280 3.53% 3.86%
C 7921 7251 2 2 0.03% 0.03%
D 7920 7250 789 789 9.96% 10.88%

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 15 138313 784.84 857 838 175.2
A 1 162 67444 380.25 857 838 175.2
A 1 178 33369 185.72 857 838 175.2
B 4 239 1479533 9147.81 841 819 161.6
B 15 204 124699 766.36 841 819 161.6
B 10 252 31371 189.0 841 819 161.6
C 12 4 9094 42.02 843 851 196.2
C 13 61 6156 27.04 843 851 196.2
C 3 202 2023 5.97 843 851 196.2
D 1 52 2269197 11967.46 780 756 189.6
D 8 195 219037 1151.57 780 756 189.6
D 5 222 156098 819.53 780 756 189.6

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