ASTROSAT CZTI

Data Quality Report

Orbit 24670

Creation date: 2024-06-27T19:08:35.911120
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/AS1T03_191T01_9000003618_24670cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24670cztM0_level2_quad_clean.evt
Size (bytes)520,128,000142,945,920
Size496.0 MB 136.3 MB
Events in quadrant A3,531,924979,432
Events in quadrant B3,738,630973,773
Events in quadrant C3,546,433926,240
Events in quadrant D4,419,682922,249

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156522
B0160612
C0156102
D0183282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7588620.817080%
B75881361.792304%
C75871071.410307%
D75871381.818901%

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 7838 7589 1 1 0.01% 0.01%
B 7838 7589 10 10 0.13% 0.13%
C 7837 7588 0 0 0.00% 0.00%
D 7837 7588 79 79 1.01% 1.04%

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 12 96 18955 99.19 910 887 182.2
A 13 254 13375 68.55 910 887 182.2
A 3 137 8325 40.83 910 887 182.2
B 7 205 68644 395.21 901 879 171.5
B 7 202 36604 208.35 901 879 171.5
B 0 189 27982 158.07 901 879 171.5
C 14 238 139693 691.31 860 864 200.8
C 7 247 25507 122.71 860 864 200.8
C 10 91 12815 59.51 860 864 200.8
D 1 52 1023687 4835.92 876 847 211.5
D 8 195 50379 234.18 876 847 211.5
D 2 234 33823 155.91 876 847 211.5

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