ASTROSAT CZTI

Data Quality Report

Orbit 46872

Creation date: 2024-06-27T23:28:47.227848
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_053T01_9000006274_46872cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46872cztM0_level2_quad_clean.evt
Size (bytes)522,371,520116,464,320
Size498.2 MB 111.1 MB
Events in quadrant A6,507,720789,151
Events in quadrant B3,465,938808,862
Events in quadrant C3,468,875749,098
Events in quadrant D5,315,804660,925

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237090
B0157380
C0159593
D0213220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74481091.463480%
B7448540.725027%
C74462232.994897%
D74496248.376963%

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 7448 7448 0 0 0.00% 0.00%
B 7448 7448 5 5 0.07% 0.07%
C 7448 7447 19 19 0.26% 0.26%
D 7449 7449 479 479 6.43% 6.43%

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 3350430 19748.73 814 795 169.6
A 13 254 9836 53.3 814 795 169.6
A 3 137 9683 52.4 814 795 169.6
B 3 112 194958 1188.38 810 782 163.4
B 0 200 21509 126.85 810 782 163.4
B 12 111 20865 122.91 810 782 163.4
C 1 241 319375 1719.87 786 790 185.2
C 14 254 76560 409.04 786 790 185.2
C 3 233 7038 33.73 786 790 185.2
D 13 249 1523044 7822.96 777 752 194.6
D 1 52 589015 3023.04 777 752 194.6
D 11 192 135321 691.54 777 752 194.6

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