ASTROSAT CZTI

Data Quality Report

Orbit 39244

Creation date: 2024-06-27T22:02:12.638330
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/AS1A12_095T01_9000005450_39244cztM0_level2.fits modeM0/AS1A12_095T01_9000005450_39244cztM0_level2_quad_clean.evt
Size (bytes)1,759,046,400283,622,400
Size1.6 GB 270.5 MB
Events in quadrant A9,963,3442,147,045
Events in quadrant B10,590,2552,127,393
Events in quadrant C8,619,5232,042,919
Events in quadrant D34,562,4401,040,324

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0790
B0790
C0790
D0790

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400485
B0430694
C0364754
D01149314

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178401380.773543%
B178407053.951794%
C17840150.084081%
D17840952053.363229%

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 25702 17844 110 110 0.43% 0.62%
B 25702 17844 523 523 2.03% 2.93%
C 25702 17844 5 5 0.02% 0.03%
D 25702 17841 8082 8082 31.45% 45.30%

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 10 83 1243113 3047.33 2056 2023 407.3
A 13 248 721428 1766.4 2056 2023 407.3
A 10 255 53954 127.51 2056 2023 407.3
B 5 172 1647483 4440.77 1988 1939 370.6
B 5 255 792420 2133.24 1988 1939 370.6
B 0 190 187281 500.18 1988 1939 370.6
C 15 214 734589 1612.22 1975 1986 454.4
C 9 187 132248 286.66 1975 1986 454.4
C 3 233 22221 44.53 1975 1986 454.4
D 12 235 26939473 73441.75 1526 1479 366.8
D 2 249 737564 2006.81 1526 1479 366.8
D 5 222 362147 983.3 1526 1479 366.8

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