ASTROSAT CZTI

Data Quality Report

Orbit 32708

Creation date: 2024-06-27T20:41:04.868164
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/AS1A10_123T04_9000004726_32708cztM0_level2.evt modeM0/AS1A10_123T04_9000004726_32708cztM0_level2_quad_clean.evt
Size (bytes)101,188,80016,680,960
Size96.5 MB 15.9 MB
Events in quadrant A641,565105,443
Events in quadrant B639,637107,120
Events in quadrant C614,221106,982
Events in quadrant D1,091,306100,929

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026222
B025661
C025091
D040311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110350.453309%
B1103100.906618%
C1103232.085222%
D1103867.796917%

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 1103 1103 2 2 0.18% 0.18%
B 1103 1103 5 5 0.45% 0.45%
C 1103 1103 3 3 0.27% 0.27%
D 1103 1103 57 57 5.17% 5.17%

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 15 249 81591 2777.16 134 132 29.3
A 15 237 24794 840.8 134 132 29.3
A 12 189 7038 235.44 134 132 29.3
B 4 251 40443 1418.88 137 134 28.4
B 0 199 23261 814.07 137 134 28.4
B 0 219 15759 550.0 137 134 28.4
C 0 10 85509 2607.76 132 133 32.7
C 6 96 6559 196.28 132 133 32.7
C 3 233 2515 72.76 132 133 32.7
D 2 249 125883 3917.77 128 125 32.1
D 8 195 118633 3691.91 128 125 32.1
D 12 218 69986 2176.4 128 125 32.1

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