ASTROSAT CZTI

Data Quality Report

Orbit 42906

Creation date: 2024-06-27T22:45:38.437631
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/AS1T05_143T01_9000005830_42906cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42906cztM0_level2_quad_clean.evt
Size (bytes)369,529,92090,561,600
Size352.4 MB 86.4 MB
Events in quadrant A3,591,277613,074
Events in quadrant B2,674,606638,284
Events in quadrant C2,901,786588,747
Events in quadrant D4,085,445519,857

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140472
B0116932
C0121102
D0158452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54662234.079766%
B5466410.750091%
C5466831.518478%
D54664137.555799%

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 7258 5467 170 170 2.34% 3.11%
B 7258 5467 27 27 0.37% 0.49%
C 7258 5467 79 79 1.09% 1.45%
D 7257 5466 404 404 5.57% 7.39%

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 15 237 650956 5291.47 596 583 122.9
A 10 83 606427 4929.18 596 583 122.9
A 13 248 17097 134.36 596 583 122.9
B 0 229 197282 1691.16 599 580 116.3
B 4 171 44626 378.69 599 580 116.3
B 3 112 42301 358.7 599 580 116.3
C 12 2 234216 1709.55 584 585 136.7
C 15 214 229660 1676.21 584 585 136.7
C 14 254 125953 917.36 584 585 136.7
D 1 47 555570 4021.88 570 554 138.0
D 1 52 518961 3756.6 570 554 138.0
D 2 249 323941 2343.4 570 554 138.0

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