ASTROSAT CZTI

Data Quality Report

Orbit 21482

Creation date: 2024-06-27T18:28:26.345575
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_141T01_9000003174_21482cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21482cztM0_level2_quad_clean.evt
Size (bytes)469,108,800105,390,720
Size447.4 MB 100.5 MB
Events in quadrant A3,290,025696,275
Events in quadrant B3,437,139706,334
Events in quadrant C3,279,566682,611
Events in quadrant D3,761,571656,271

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136940
B0140370
C0137010
D0151660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6452961.487911%
B64531151.782117%
C64531502.324500%
D64532213.424764%

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 7527 6452 0 0 0.00% 0.00%
B 7528 6453 6 6 0.08% 0.09%
C 7528 6453 0 0 0.00% 0.00%
D 7528 6453 155 155 2.06% 2.40%

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 14 111 13038 72.65 850 835 168.0
A 13 254 9476 51.44 850 835 168.0
A 0 226 7329 38.66 850 835 168.0
B 0 230 38177 237.47 840 822 157.3
B 0 190 26552 163.57 840 822 157.3
B 6 36 25416 156.35 840 822 157.3
C 14 238 129745 694.22 807 815 185.7
C 13 61 5873 27.23 807 815 185.7
C 3 233 2644 9.85 807 815 185.7
D 7 38 477863 2422.94 818 794 196.9
D 5 222 82222 413.55 818 794 196.9
D 13 153 37443 186.13 818 794 196.9

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