ASTROSAT CZTI

Data Quality Report

Orbit 52597

Creation date: 2025-06-19T02:28:31.865125
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_011T06_9000006478_52597cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52597cztM0_level2_quad_clean.evt
Size (bytes)949,962,24064,584,000
Size906.0 MB 61.6 MB
Events in quadrant A3,273,629582,214
Events in quadrant B8,441,596484,933
Events in quadrant C12,903,819173,755
Events in quadrant D10,080,765294,138

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141551
B0292391
C0423771
D0340971

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60151402.327515%
B6015166527.680798%
C6015435072.319202%
D6016283247.074468%

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 7134 6015 113 113 1.58% 1.88%
B 7134 6015 1653 1653 23.17% 27.48%
C 7134 6015 4146 4146 58.12% 68.93%
D 7135 6016 2856 2856 40.03% 47.47%

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 351675 2212.98 627 611 158.6
A 3 114 77905 487.23 627 611 158.6
A 5 243 77756 486.29 627 611 158.6
B 10 254 3432708 28119.31 575 557 122.1
B 10 128 1020814 8358.88 575 557 122.1
B 10 44 437607 3580.71 575 557 122.1
C 15 248 10626292 121398.57 314 312 87.5
C 15 233 848983 9695.81 314 312 87.5
C 12 254 80726 918.71 314 312 87.5
D 15 125 2070453 15752.69 459 439 131.4
D 8 176 1937824 14743.39 459 439 131.4
D 12 1 1756942 13366.89 459 439 131.4

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