ASTROSAT CZTI

Data Quality Report

Orbit 41490

Creation date: 2024-06-27T22:29:44.147946
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_035T02_9000005676_41490cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41490cztM0_level2_quad_clean.evt
Size (bytes)1,435,991,040375,304,320
Size1.3 GB 357.9 MB
Events in quadrant A11,544,3652,602,866
Events in quadrant B10,623,2482,646,456
Events in quadrant C14,651,2742,397,063
Events in quadrant D14,671,2022,235,523

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04400
B04400
C04400
D04400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0469746
B0460965
C0566815
D0580995

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21537550.255374%
B215372090.970423%
C215379614.462088%
D2153711695.427868%

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 31492 21542 21 21 0.07% 0.10%
B 31492 21542 121 121 0.38% 0.56%
C 31492 21542 904 904 2.87% 4.20%
D 31492 21542 1102 1102 3.50% 5.12%

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 10 83 1791220 3636.21 2450 2407 491.9
A 2 79 148304 296.57 2450 2407 491.9
A 13 248 72419 142.32 2450 2407 491.9
B 0 186 602755 1327.97 2434 2368 452.1
B 0 190 275619 604.39 2434 2368 452.1
B 0 245 81604 175.26 2434 2368 452.1
C 0 10 1765292 3318.53 2331 2347 531.2
C 9 54 1648833 3099.31 2331 2347 531.2
C 15 214 871187 1635.48 2331 2347 531.2
D 12 16 3126397 5532.83 2345 2288 564.6
D 12 6 556230 981.04 2345 2288 564.6
D 1 47 467082 823.15 2345 2288 564.6

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