ASTROSAT CZTI

Data Quality Report

Orbit 00967

Creation date: 2024-06-27T14:05:26.600673
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/AS1P01_998T01_9000000188_00967cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00967cztM0_level2_quad_clean.evt
Size (bytes)987,183,36089,075,520
Size941.5 MB 84.9 MB
Events in quadrant A6,893,391599,433
Events in quadrant B7,359,728596,232
Events in quadrant C7,081,539574,009
Events in quadrant D8,176,457521,010

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246060
B0259810
C0251410
D0285350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5811170.292549%
B5810350.602410%
C581090.154905%
D581176513.164688%

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 6931 5812 144 144 2.08% 2.48%
B 6930 5811 210 210 3.03% 3.61%
C 6930 5811 165 165 2.38% 2.84%
D 6931 5812 942 942 13.59% 16.21%

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 12 189 8738 16.15 1791 1800 429.6
A 0 253 8071 14.6 1791 1800 429.6
A 11 79 7283 12.76 1791 1800 429.6
B 0 220 139605 319.02 1830 1841 431.8
B 5 249 86467 195.97 1830 1841 431.8
B 15 22 64572 145.27 1830 1841 431.8
C 15 241 259274 556.07 1672 1733 463.1
C 10 34 222628 476.94 1672 1733 463.1
C 9 52 34939 71.7 1672 1733 463.1
D 12 188 2199589 4663.47 1536 1591 471.3
D 1 4 117895 246.76 1536 1591 471.3
D 2 107 88080 183.5 1536 1591 471.3

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