ASTROSAT CZTI

Data Quality Report

Orbit 43810

Creation date: 2024-06-27T22:56:03.326424
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/AS1A13_018T01_9000005906_43810cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43810cztM0_level2_quad_clean.evt
Size (bytes)735,523,20092,854,080
Size701.4 MB 88.6 MB
Events in quadrant A4,939,481688,804
Events in quadrant B4,399,448699,776
Events in quadrant C9,463,357511,369
Events in quadrant D7,934,712469,379

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192281
B0173581
C0324056
D0279211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63264196.623459%
B63274747.491702%
C6326214133.844451%
D6326193730.619665%

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 6971 6326 137 137 1.97% 2.17%
B 6972 6328 217 217 3.11% 3.43%
C 6971 6326 2197 2197 31.52% 34.73%
D 6970 6326 1495 1495 21.45% 23.63%

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 902040 5822.07 741 725 154.8
A 15 223 707979 4568.53 741 725 154.8
A 13 248 355847 2293.92 741 725 154.8
B 0 200 694980 4779.62 737 716 145.3
B 5 235 478726 3290.83 737 716 145.3
B 15 36 68631 467.56 737 716 145.3
C 15 174 5920450 39835.1 632 639 148.6
C 15 190 355960 2391.0 632 639 148.6
C 14 254 181540 1217.3 632 639 148.6
D 10 102 1653765 10228.49 621 601 161.6
D 12 34 1615591 9992.29 621 601 161.6
D 5 235 797000 4927.49 621 601 161.6

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