ASTROSAT CZTI

Data Quality Report

Orbit 21966

Creation date: 2024-06-27T18:34:38.474546
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/AS1A07_130T01_9000003246_21966cztM0_level2.evt modeM0/AS1A07_130T01_9000003246_21966cztM0_level2_quad_clean.evt
Size (bytes)858,919,680153,558,720
Size819.1 MB 146.4 MB
Events in quadrant A5,948,895950,664
Events in quadrant B6,452,775967,681
Events in quadrant C6,006,658940,575
Events in quadrant D6,740,634910,443

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260654
B0272683
C0259893
D0288313

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127481100.862880%
B127482391.874804%
C127481471.153122%
D127482572.016003%

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 14078 12748 13 13 0.09% 0.10%
B 14078 12748 87 87 0.62% 0.68%
C 14078 12748 0 0 0.00% 0.00%
D 14078 12749 170 170 1.21% 1.33%

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 10 253 68952 220.36 1523 1489 306.1
A 13 254 20583 62.37 1523 1489 306.1
A 3 137 13353 38.75 1523 1489 306.1
B 3 64 412587 1424.74 1518 1479 288.6
B 0 197 46701 156.72 1518 1479 288.6
B 12 111 36369 120.91 1518 1479 288.6
C 14 238 232995 670.71 1474 1483 345.2
C 8 128 14292 37.11 1474 1483 345.2
C 13 61 10291 25.52 1474 1483 345.2
D 13 174 700784 1944.77 1483 1441 359.6
D 2 136 264903 732.65 1483 1441 359.6
D 7 238 54829 148.46 1483 1441 359.6

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