ASTROSAT CZTI

Data Quality Report

Orbit 20230213_A12_044T09_9000005506_level2

Creation date: 2023-02-14T12:00:31.078817
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_044T09_9000005506cztM0_level2.fits modeM0/AS1A12_044T09_9000005506cztM0_level2_quad_clean.evt
Size (bytes)265,921,920324,100,800
Size253.6 MB 309.1 MB
Events in quadrant A1,589,4322,027,816
Events in quadrant B1,513,8782,019,179
Events in quadrant C1,564,2001,961,997
Events in quadrant D1,299,1541,721,192

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06230
B06150
C06220
D06200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0687780
B0666740
C0620020
D0889700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A303871900.625267%
B303542770.912565%
C30354720.237201%
D3028625058.271148%

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 41526 30510 0 0 0.00% 0.00%
B 41526 30500 0 0 0.00% 0.00%
C 41526 30495 0 0 0.00% 0.00%
D 41525 30279 0 0 0.00% 0.00%

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 29 1326 8.93 414 388 105.1
A 9 19 1273 8.42 414 388 105.1
A 7 110 1272 8.41 414 388 105.1
B 2 9 1271 11.02 400 380 80.9
B 3 80 1165 9.71 400 380 80.9
B 3 17 1071 8.55 400 380 80.9
C 3 203 1330 8.7 413 386 108.6
C 1 81 1299 8.41 413 386 108.6
C 1 80 1279 8.23 413 386 108.6
D 7 3 1020 6.76 370 336 101.1
D 1 3 983 6.4 370 336 101.1
D 4 160 955 6.12 370 336 101.1

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