ASTROSAT CZTI

Data Quality Report

Orbit 41766

Creation date: 2024-06-27T22:32:36.871709
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_044T19_9000005698_41766cztM0_level2.fits modeM0/AS1A12_044T19_9000005698_41766cztM0_level2_quad_clean.evt
Size (bytes)370,503,36083,355,840
Size353.3 MB 79.5 MB
Events in quadrant A2,724,785581,182
Events in quadrant B2,510,225585,407
Events in quadrant C2,967,151531,134
Events in quadrant D5,123,730476,261

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110912
B0107332
C0119462
D0186832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A499680.160128%
B4997290.580348%
C49972064.122473%
D499761012.207324%

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 7118 4997 5 5 0.07% 0.10%
B 7119 4997 19 19 0.27% 0.38%
C 7119 4997 211 211 2.96% 4.22%
D 7119 4997 926 926 13.01% 18.53%

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 524278 4521.42 558 548 115.8
A 2 79 31104 263.79 558 548 115.8
A 13 254 8327 67.16 558 548 115.8
B 5 255 93997 878.76 550 536 106.4
B 0 186 91272 853.14 550 536 106.4
B 0 245 88107 823.38 550 536 106.4
C 0 10 704047 5816.4 518 522 121.0
C 15 214 213603 1761.65 518 522 121.0
C 14 67 15166 121.07 518 522 121.0
D 12 79 2152669 16343.1 527 512 131.7
D 13 249 252698 1915.06 527 512 131.7
D 2 120 245216 1858.24 527 512 131.7

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