ASTROSAT CZTI

Data Quality Report

Orbit 00559

Creation date: 2024-06-27T13:59:46.725053
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_015T03_9000000076_00559cztM0_level2.evt modeM0/AS1P01_015T03_9000000076_00559cztM0_level2_quad_clean.evt
Size (bytes)790,876,80075,216,960
Size754.2 MB 71.7 MB
Events in quadrant A6,244,479474,360
Events in quadrant B6,015,775481,121
Events in quadrant C5,626,126489,641
Events in quadrant D5,724,444473,692

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222103
B0215042
C0204062
D0206822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5122510.995705%
B512280.156189%
C5122100.195236%
D5122160.312378%

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 7278 5123 256 256 3.52% 5.00%
B 7278 5123 79 79 1.09% 1.54%
C 7278 5123 89 89 1.22% 1.74%
D 7278 5123 106 106 1.46% 2.07%

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 0 69 369536 1103.32 1488 1470 333.6
A 15 171 47940 139.3 1488 1470 333.6
A 0 238 37817 108.95 1488 1470 333.6
B 4 250 87491 244.2 1511 1517 352.1
B 0 220 37159 101.24 1511 1517 352.1
B 8 4 33538 90.95 1511 1517 352.1
C 10 17 114131 294.42 1373 1422 382.8
C 1 1 65661 167.81 1373 1422 382.8
C 9 206 24794 61.05 1373 1422 382.8
D 1 239 243026 602.89 1285 1333 400.9
D 1 4 190185 471.08 1285 1333 400.9
D 13 221 116813 288.06 1285 1333 400.9

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