ASTROSAT CZTI

Data Quality Report

Orbit 00723

Creation date: 2024-06-27T14:02:04.062484
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/AS1P01_147T01_9000000106_00723cztM0_level2.evt modeM0/AS1P01_147T01_9000000106_00723cztM0_level2_quad_clean.evt
Size (bytes)1,033,963,20067,037,760
Size986.1 MB 63.9 MB
Events in quadrant A7,600,134398,778
Events in quadrant B7,941,903406,658
Events in quadrant C7,464,413394,694
Events in quadrant D7,874,578374,605

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272162
B0282296
C0267802
D0280372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6525140.214559%
B652440.061312%
C652440.061312%
D6524901.379522%

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 7835 6526 158 158 2.02% 2.42%
B 7834 6525 142 142 1.81% 2.18%
C 7834 6525 93 93 1.19% 1.43%
D 7834 6525 370 370 4.72% 5.67%

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 10 230 69565 145.48 1949 1965 464.7
A 15 17 26326 52.43 1949 1965 464.7
A 15 171 12422 22.5 1949 1965 464.7
B 5 191 28709 55.67 2065 2081 478.3
B 0 220 23610 45.01 2065 2081 478.3
B 4 232 15461 27.97 2065 2081 478.3
C 15 241 42337 77.29 1883 1950 522.6
C 3 111 24852 43.83 1883 1950 522.6
C 9 52 15478 25.89 1883 1950 522.6
D 6 226 740224 1345.3 1789 1856 548.8
D 1 4 104001 186.11 1789 1856 548.8
D 14 52 84430 150.45 1789 1856 548.8

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