ASTROSAT CZTI

Data Quality Report

Orbit 07777

Creation date: 2024-06-27T15:23:52.768853
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/AS1A02_132T01_9000001068_07777cztM0_level2.evt modeM0/AS1A02_132T01_9000001068_07777cztM0_level2_quad_clean.evt
Size (bytes)537,396,48079,715,520
Size512.5 MB 76.0 MB
Events in quadrant A3,582,895474,068
Events in quadrant B3,810,761485,315
Events in quadrant C3,547,109484,478
Events in quadrant D4,817,697440,346

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158372
B0162981
C0158741
D0196031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76062052.695241%
B76062423.181699%
C76061461.919537%
D76064996.560610%

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 7711 7606 0 0 0.00% 0.00%
B 7711 7606 16 16 0.21% 0.21%
C 7711 7606 1 1 0.01% 0.01%
D 7711 7606 340 340 4.41% 4.47%

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 8 15 25060 126.52 923 902 190.9
A 0 226 8977 42.29 923 902 190.9
A 12 194 8109 37.74 923 902 190.9
B 4 239 87219 482.32 927 903 179.0
B 4 173 39493 215.64 927 903 179.0
B 0 214 29042 157.24 927 903 179.0
C 12 4 11286 48.64 904 909 213.4
C 13 61 6975 28.43 904 909 213.4
C 8 128 5295 20.56 904 909 213.4
D 1 52 1223113 5516.79 895 867 221.6
D 13 238 66039 294.16 895 867 221.6
D 2 14 45096 199.63 895 867 221.6

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