ASTROSAT CZTI

Data Quality Report

Orbit 31761

Creation date: 2024-06-27T20:32:24.515704
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/AS1A10_059T01_9000004634_31761cztM0_level2.evt modeM0/AS1A10_059T01_9000004634_31761cztM0_level2_quad_clean.evt
Size (bytes)750,867,84048,162,240
Size716.1 MB 45.9 MB
Events in quadrant A6,653,833246,678
Events in quadrant B3,804,000345,284
Events in quadrant C9,249,117216,075
Events in quadrant D2,730,757332,843

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228880
B0146270
C0305510
D0110610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4488191942.758467%
B44881503.342246%
C4488315370.254011%
D4488130.289661%

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 4488 4488 1284 1284 28.61% 28.61%
B 4488 4488 101 101 2.25% 2.25%
C 4488 4488 2783 2783 62.01% 62.01%
D 4488 4488 13 13 0.29% 0.29%

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 0 13 5081025 61515.82 407 401 82.6
A 13 254 7077 80.83 407 401 82.6
A 3 137 3871 42.01 407 401 82.6
B 6 159 1286101 12873.43 523 512 99.9
B 5 172 286840 2867.19 523 512 99.9
B 5 255 123038 1226.93 523 512 99.9
C 3 233 7037789 81881.73 367 369 85.9
C 0 10 358614 4168.25 367 369 85.9
C 10 22 353386 4107.42 367 369 85.9
D 8 195 597167 4874.14 510 496 122.4
D 13 249 45898 370.88 510 496 122.4
D 2 250 45816 370.21 510 496 122.4

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