ASTROSAT CZTI

Data Quality Report

Orbit 25318

Creation date: 2024-06-27T19:16:18.602347
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/AS1A09_059T01_9000003706_25318cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25318cztM0_level2_quad_clean.evt
Size (bytes)289,618,56047,787,840
Size276.2 MB 45.6 MB
Events in quadrant A1,982,496312,519
Events in quadrant B1,758,984317,422
Events in quadrant C2,252,550290,641
Events in quadrant D2,556,750297,059

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079410
B072290
C087460
D098100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3225902.790698%
B3225872.697674%
C32243229.987593%
D32242176.730769%

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 4400 3227 0 0 0.00% 0.00%
B 4400 3227 2 2 0.05% 0.06%
C 4399 3226 126 126 2.86% 3.91%
D 4399 3226 130 130 2.96% 4.03%

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 15 173 257264 2949.01 432 424 87.1
A 6 16 57571 656.16 432 424 87.1
A 13 254 5407 57.21 432 424 87.1
B 0 190 41118 498.75 427 416 81.6
B 15 32 35064 424.57 427 416 81.6
B 12 111 9788 114.84 427 416 81.6
C 9 54 604948 6376.26 404 407 94.8
C 14 238 64775 678.91 404 407 94.8
C 2 16 6354 62.72 404 407 94.8
D 8 195 380407 3791.77 412 401 100.2
D 1 52 215601 2147.31 412 401 100.2
D 7 238 210274 2094.15 412 401 100.2

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