ASTROSAT CZTI

Data Quality Report

Orbit 53300

Creation date: 2025-08-10T14:15:19.529641
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/AS1C09_011T08_9000006492_53300cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53300cztM0_level2_quad_clean.evt
Size (bytes)812,836,800104,135,040
Size775.2 MB 99.3 MB
Events in quadrant A3,902,717745,109
Events in quadrant B8,624,828670,353
Events in quadrant C11,384,441516,145
Events in quadrant D5,559,271667,141

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177601
B0312531
C0392901
D0223401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79721391.743603%
B7973163220.469083%
C7973256432.158535%
D79733444.314562%

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 8607 7973 64 64 0.74% 0.80%
B 8608 7974 1005 1005 11.68% 12.60%
C 8608 7974 2305 2305 26.78% 28.91%
D 8608 7974 252 252 2.93% 3.16%

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 4 249 160501 769.81 830 805 207.4
A 0 8 128225 614.23 830 805 207.4
A 7 206 97726 467.21 830 805 207.4
B 4 206 3974941 24472.15 766 741 162.4
B 4 81 756009 4650.75 766 741 162.4
B 10 28 258681 1588.33 766 741 162.4
C 1 241 5383336 28982.32 680 672 185.7
C 15 224 1700604 9153.08 680 672 185.7
C 15 178 295586 1587.93 680 672 185.7
D 13 46 750981 3314.05 794 757 226.4
D 6 239 572198 2524.29 794 757 226.4
D 2 249 264105 1163.32 794 757 226.4

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