ASTROSAT CZTI

Data Quality Report

Orbit 33801

Creation date: 2024-06-27T20:52:56.218055
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/AS1T04_091T01_9000004822_33801cztM0_level2.evt modeM0/AS1T04_091T01_9000004822_33801cztM0_level2_quad_clean.evt
Size (bytes)539,121,60061,142,400
Size514.1 MB 58.3 MB
Events in quadrant A4,418,857359,201
Events in quadrant B3,067,980389,847
Events in quadrant C3,183,849392,171
Events in quadrant D5,325,503366,300

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164053
B0122282
C0127672
D0192582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A489676915.706699%
B4896982.001634%
C4896871.776961%
D48963968.088235%

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 7018 4897 502 502 7.15% 10.25%
B 7018 4897 64 64 0.91% 1.31%
C 7018 4897 58 58 0.83% 1.18%
D 7018 4897 357 357 5.09% 7.29%

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 15 237 2174025 18938.58 575 566 114.8
A 13 6 10322 85.01 575 566 114.8
A 10 83 10227 84.18 575 566 114.8
B 5 172 392847 3412.89 616 601 114.9
B 0 219 64122 552.69 616 601 114.9
B 0 190 48803 419.4 616 601 114.9
C 15 214 215471 1553.66 611 617 138.3
C 3 233 179794 1295.67 611 617 138.3
C 0 10 136022 979.15 611 617 138.3
D 8 195 1150220 7800.09 599 585 147.4
D 12 235 838102 5682.42 599 585 147.4
D 2 250 524914 3557.49 599 585 147.4

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