ASTROSAT CZTI

Data Quality Report

Orbit 52245

Creation date: 2025-07-21T13:31:43.791472
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_9000006472_52245cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52245cztM0_level2_quad_clean.evt
Size (bytes)852,736,32084,329,280
Size813.2 MB 80.4 MB
Events in quadrant A3,770,194605,313
Events in quadrant B9,172,655570,953
Events in quadrant C8,280,550492,056
Events in quadrant D9,823,731415,350

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159911
B0319654
C0293361
D0338791

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67211662.469871%
B6721132719.744086%
C6721149222.199078%
D6721190328.314239%

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 7501 6722 105 105 1.40% 1.56%
B 7501 6722 1026 1026 13.68% 15.26%
C 7501 6722 1339 1339 17.85% 19.92%
D 7501 6722 1949 1949 25.98% 28.99%

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 3 79 406963 2398.61 684 669 169.4
A 6 162 162822 957.29 684 669 169.4
A 5 240 76969 450.45 684 669 169.4
B 10 254 4647298 33532.87 648 627 138.6
B 12 32 984788 7102.23 648 627 138.6
B 4 81 165124 1187.1 648 627 138.6
C 15 224 2201343 12992.67 610 604 169.4
C 9 38 1410704 8324.91 610 604 169.4
C 1 45 1254577 7403.17 610 604 169.4
D 6 42 5510525 32320.35 592 566 170.5
D 10 181 860872 5046.39 592 566 170.5
D 8 176 640866 3755.87 592 566 170.5

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