ASTROSAT CZTI

Data Quality Report

Orbit 09144

Creation date: 2024-06-27T15:41:51.977113
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/AS1A03_033T01_9000001276_09144cztM0_level2.evt modeM0/AS1A03_033T01_9000001276_09144cztM0_level2_quad_clean.evt
Size (bytes)251,386,56050,273,280
Size239.7 MB 47.9 MB
Events in quadrant A2,066,966319,753
Events in quadrant B1,772,725320,052
Events in quadrant C1,608,769315,706
Events in quadrant D1,914,349307,543

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086018
B079161
C074917
D0830926

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3664270.736900%
B3667150.409054%
C366430.081878%
D3662451.228837%

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 3667 3667 10 10 0.27% 0.27%
B 3667 3667 1 1 0.03% 0.03%
C 3667 3667 0 0 0.00% 0.00%
D 3667 3665 43 43 1.17% 1.17%

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 8 5 314121 3688.21 414 405 85.1
A 13 251 94645 1107.93 414 405 85.1
A 1 162 35711 415.08 414 405 85.1
B 4 48 54413 667.21 421 410 80.9
B 0 230 43896 537.27 421 410 80.9
B 0 219 12598 150.58 421 410 80.9
C 9 68 14911 151.07 408 409 96.0
C 13 61 3083 27.86 408 409 96.0
C 12 4 1397 10.29 408 409 96.0
D 2 14 151309 1500.52 405 393 100.6
D 1 52 148630 1473.88 405 393 100.6
D 7 71 36655 360.54 405 393 100.6

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