ASTROSAT CZTI

Data Quality Report

Orbit 22088

Creation date: 2024-06-27T18:36:33.195756
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_146T01_9000003272_22088cztM0_level2.evt modeM0/AS1T03_146T01_9000003272_22088cztM0_level2_quad_clean.evt
Size (bytes)467,634,240113,207,040
Size446.0 MB 108.0 MB
Events in quadrant A3,273,432779,288
Events in quadrant B3,399,343789,912
Events in quadrant C3,410,802721,550
Events in quadrant D3,672,219719,597

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135011
B0138761
C0139071
D0147141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5989580.968442%
B5990731.218698%
C5990881.469115%
D59901482.470785%

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 7329 5990 1 1 0.01% 0.02%
B 7330 5991 4 4 0.05% 0.07%
C 7330 5991 2 2 0.03% 0.03%
D 7330 5991 70 70 0.95% 1.17%

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 15 174 24549 141.52 843 829 167.6
A 13 254 10129 55.49 843 829 167.6
A 0 226 7315 38.7 843 829 167.6
B 0 197 54804 347.76 831 813 155.3
B 3 64 22228 137.93 831 813 155.3
B 0 190 19943 123.22 831 813 155.3
C 0 239 251017 1384.64 777 786 180.7
C 14 238 126748 697.0 777 786 180.7
C 13 61 5477 25.96 777 786 180.7
D 1 52 491862 2550.47 800 779 192.5
D 2 16 38096 193.81 800 779 192.5
D 2 120 30422 153.95 800 779 192.5

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