ASTROSAT CZTI

Data Quality Report

Orbit 29635

Creation date: 2024-06-27T20:06:17.932043
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_286T01_9000004268_29635cztM0_level2.evt modeM0/AS1T03_286T01_9000004268_29635cztM0_level2_quad_clean.evt
Size (bytes)600,981,12095,063,040
Size573.1 MB 90.7 MB
Events in quadrant A3,269,016613,943
Events in quadrant B3,490,375618,729
Events in quadrant C3,470,804601,848
Events in quadrant D7,486,940546,915

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147001
B0151151
C0150861
D0271131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71371902.662183%
B71372643.699033%
C71373975.562561%
D713894013.168955%

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 7222 7138 0 0 0.00% 0.00%
B 7222 7138 39 39 0.54% 0.55%
C 7222 7139 1 1 0.01% 0.01%
D 7223 7139 781 781 10.81% 10.94%

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 0 13 34654 200.28 837 817 168.9
A 13 254 11788 64.94 837 817 168.9
A 3 137 8843 47.51 837 817 168.9
B 15 33 179522 1144.0 826 803 156.2
B 0 189 23506 145.32 826 803 156.2
B 12 111 20322 124.94 826 803 156.2
C 14 238 192241 1024.26 801 805 186.9
C 14 254 88355 468.43 801 805 186.9
C 15 208 27414 142.37 801 805 186.9
D 7 238 3348560 18307.59 770 746 182.9
D 8 195 518609 2831.94 770 746 182.9
D 7 80 388179 2118.69 770 746 182.9

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