ASTROSAT CZTI

Data Quality Report

Orbit 16915

Creation date: 2024-06-27T17:29:27.147935
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/AS1T03_030T01_9000002512_16915cztM0_level2.evt modeM0/AS1T03_030T01_9000002512_16915cztM0_level2_quad_clean.evt
Size (bytes)623,586,24042,442,560
Size594.7 MB 40.5 MB
Events in quadrant A7,839,480171,484
Events in quadrant B3,256,979223,716
Events in quadrant C3,159,116212,701
Events in quadrant D4,173,901207,394

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279702
B0140782
C0137032
D0170532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6719193028.724513%
B6719550.818574%
C6719560.833457%
D67182443.632033%

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 7660 6721 1313 1313 17.14% 19.54%
B 7660 6721 5 5 0.07% 0.07%
C 7660 6721 0 0 0.00% 0.00%
D 7659 6720 196 196 2.56% 2.92%

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 15 174 5072054 35404.47 706 691 143.2
A 12 189 36479 249.85 706 691 143.2
A 15 190 9705 62.93 706 691 143.2
B 15 35 98104 640.71 796 775 151.9
B 0 197 24467 155.96 796 775 151.9
B 12 111 18156 114.42 796 775 151.9
C 14 238 119532 663.27 765 769 179.1
C 3 233 48406 266.04 765 769 179.1
C 0 207 6690 33.07 765 769 179.1
D 1 52 1205273 6448.85 765 745 186.8
D 2 234 27482 143.15 765 745 186.8
D 2 152 27029 140.72 765 745 186.8

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