ASTROSAT CZTI

Data Quality Report

Orbit 31361

Creation date: 2024-06-27T20:27:15.881625
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_101T01_9000004546_31361cztM0_level2.evt modeM0/AS1A10_101T01_9000004546_31361cztM0_level2_quad_clean.evt
Size (bytes)999,688,320170,579,520
Size953.4 MB 162.7 MB
Events in quadrant A5,942,0161,103,668
Events in quadrant B9,931,0921,088,910
Events in quadrant C6,475,2621,052,770
Events in quadrant D7,069,0181,042,412

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259382
B0389322
C0271272
D0296032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12716360.283108%
B127172622.060234%
C127172321.824330%
D127171461.148070%

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 14056 12718 0 0 0.00% 0.00%
B 14057 12719 78 78 0.55% 0.61%
C 14057 12719 11 11 0.08% 0.09%
D 14057 12719 100 100 0.71% 0.79%

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 13 254 23590 71.72 1539 1508 307.9
A 3 137 16135 47.51 1539 1508 307.9
A 0 226 12896 36.99 1539 1508 307.9
B 6 159 3579983 12296.34 1513 1473 291.0
B 4 80 296039 1012.17 1513 1473 291.0
B 0 190 40450 133.93 1513 1473 291.0
C 3 233 398751 1153.92 1467 1475 344.3
C 14 238 253114 730.91 1467 1475 344.3
C 0 10 29146 80.37 1467 1475 344.3
D 8 195 933606 2652.52 1480 1437 351.4
D 12 79 385317 1092.34 1480 1437 351.4
D 2 234 59422 165.0 1480 1437 351.4

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