ASTROSAT CZTI

Data Quality Report

Orbit 48200

Creation date: 2024-08-27T13:07:02.417885
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/AS1A13_037T05_9000006414_48200cztM0_level2.fits modeM0/AS1A13_037T05_9000006414_48200cztM0_level2_quad_clean.evt
Size (bytes)494,262,72080,893,440
Size471.4 MB 77.1 MB
Events in quadrant A6,615,671710,945
Events in quadrant B1,029,42441,964
Events in quadrant C3,074,301685,335
Events in quadrant D7,104,617588,507

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239571
B063861
C0134911
D0252561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60012834.715881%
B6002600199.983339%
C60021091.816061%
D6002116319.376874%

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 7161 6002 45 45 0.63% 0.75%
B 7161 6001 0 0 0.00% 0.00%
C 7162 6003 64 64 0.89% 1.07%
D 7162 6003 1022 1022 14.27% 17.02%

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 3885896 26701.05 692 680 145.5
A 3 14 29160 195.73 692 680 145.5
A 7 3 12212 79.25 692 680 145.5
B 2 177 830608 77435.56 43 42 10.7
B 4 21 11609 1078.42 43 42 10.7
B 0 186 5214 482.2 43 42 10.7
C 12 2 282160 1784.44 672 678 157.7
C 3 233 129514 816.75 672 678 157.7
C 0 207 29891 185.19 672 678 157.7
D 2 165 4241962 26629.68 633 613 159.3
D 12 233 127172 794.61 633 613 159.3
D 5 32 60033 373.07 633 613 159.3

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