ASTROSAT CZTI

Data Quality Report

Orbit 50512

Creation date: 2025-01-29T17:34:34.887192
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/AS1T05_239T01_9000006444_50512cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50512cztM0_level2_quad_clean.evt
Size (bytes)955,883,52092,119,680
Size911.6 MB 87.9 MB
Events in quadrant A8,408,375560,398
Events in quadrant B3,930,875743,542
Events in quadrant C11,310,013495,361
Events in quadrant D11,161,493471,981

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301060
B0170260
C0388190
D0383510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7431155320.898937%
B74311431.924371%
C7431217529.269277%
D7432206127.731432%

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 7431 7431 1357 1357 18.26% 18.26%
B 7431 7431 136 136 1.83% 1.83%
C 7431 7431 2115 2115 28.46% 28.46%
D 7432 7432 2172 2172 29.22% 29.22%

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 4 249 2045076 11596.01 711 694 176.3
A 12 250 1386073 7858.06 711 694 176.3
A 6 161 736371 4172.86 711 694 176.3
B 7 0 553641 3271.51 778 750 169.0
B 0 213 48439 282.18 778 750 169.0
B 0 155 42695 248.19 778 750 169.0
C 12 247 2007964 10983.02 667 666 182.8
C 0 208 829430 4534.62 667 666 182.8
C 15 147 796191 4352.75 667 666 182.8
D 7 61 4331964 23004.47 679 657 188.3
D 7 60 580321 3078.72 679 657 188.3
D 6 42 484271 2568.57 679 657 188.3

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