ASTROSAT CZTI

Data Quality Report

Orbit 12612

Creation date: 2024-06-27T16:29:59.977998
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/AS1G08_071T01_9000001874_12612cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12612cztM0_level2_quad_clean.evt
Size (bytes)1,378,967,040255,453,120
Size1.3 GB 243.6 MB
Events in quadrant A9,354,5781,595,942
Events in quadrant B10,318,4061,634,487
Events in quadrant C9,563,5211,623,837
Events in quadrant D11,200,2141,532,002

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03980
B03980
C03980
D03980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413916
B0437125
C0423105
D0470365

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A196024792.443628%
B196026233.178247%
C196023691.882461%
D196026413.270074%

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 20388 19606 49 49 0.24% 0.25%
B 20388 19605 111 111 0.54% 0.57%
C 20388 19608 115 115 0.56% 0.59%
D 20388 19603 250 250 1.23% 1.28%

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 9 143 274596 578.38 2306 2250 470.9
A 3 1 112851 234.88 2306 2250 470.9
A 12 189 79980 165.07 2306 2250 470.9
B 4 239 685411 1549.42 2310 2250 440.9
B 0 85 148223 331.07 2310 2250 440.9
B 3 209 100446 222.71 2310 2250 440.9
C 15 208 748935 1436.99 2250 2257 519.6
C 14 234 24539 42.88 2250 2257 519.6
C 13 61 16607 27.62 2250 2257 519.6
D 1 52 1171359 2175.27 2218 2148 537.5
D 1 255 506726 938.75 2218 2148 537.5
D 10 157 427889 792.08 2218 2148 537.5

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