ASTROSAT CZTI

Data Quality Report

Orbit 27601

Creation date: 2024-06-27T19:42:02.473723
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_257T01_9000003976_27601cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27601cztM0_level2_quad_clean.evt
Size (bytes)518,500,80093,818,880
Size494.5 MB 89.5 MB
Events in quadrant A3,080,692611,906
Events in quadrant B3,354,354631,779
Events in quadrant C3,319,121594,372
Events in quadrant D5,524,772566,880

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132190
B0140030
C0137350
D0206790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6245480.768615%
B6246661.056676%
C6246821.312840%
D624667510.806916%

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 8530 6247 5 5 0.06% 0.08%
B 8531 6248 9 9 0.11% 0.14%
C 8531 6248 9 9 0.11% 0.14%
D 8531 6248 693 693 8.12% 11.09%

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 8 192 14751 88.27 793 779 158.3
A 13 254 11291 66.41 793 779 158.3
A 3 137 7362 41.59 793 779 158.3
B 3 64 99197 661.62 797 778 148.8
B 0 230 58196 385.99 797 778 148.8
B 10 245 51159 338.68 797 778 148.8
C 2 16 179036 1002.41 766 770 177.8
C 14 238 122961 687.09 766 770 177.8
C 15 208 11297 59.19 766 770 177.8
D 1 52 2395505 13422.58 744 723 178.4
D 6 112 155737 868.84 744 723 178.4
D 2 250 72902 404.56 744 723 178.4

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