ASTROSAT CZTI

Data Quality Report

Orbit 40802

Creation date: 2024-06-27T22:20:42.082803
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_099T03_9000005570_40802cztM0_level2.fits modeM0/AS1A12_099T03_9000005570_40802cztM0_level2_quad_clean.evt
Size (bytes)868,466,880251,467,200
Size828.2 MB 239.8 MB
Events in quadrant A8,532,1341,670,818
Events in quadrant B7,406,1411,721,653
Events in quadrant C7,427,4401,641,126
Events in quadrant D7,569,5861,500,830

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0347615
B0327844
C0321534
D0340354

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156371530.978449%
B156371130.722645%
C15637380.243013%
D156371611.029609%

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 19814 15640 112 112 0.57% 0.72%
B 19814 15640 67 67 0.34% 0.43%
C 19814 15640 22 22 0.11% 0.14%
D 19814 15640 155 155 0.78% 0.99%

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 1360822 3851.95 1713 1678 352.8
A 6 10 459416 1297.28 1713 1678 352.8
A 13 248 38042 103.06 1713 1678 352.8
B 5 255 357875 1076.23 1703 1653 331.0
B 15 85 154311 461.22 1703 1653 331.0
B 0 190 116634 347.38 1703 1653 331.0
C 15 214 663915 1710.77 1662 1672 387.1
C 0 10 132640 338.33 1662 1672 387.1
C 14 254 49891 124.56 1662 1672 387.1
D 12 233 287147 711.14 1656 1611 401.5
D 2 153 277232 686.45 1656 1611 401.5
D 2 249 197880 488.82 1656 1611 401.5

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