ASTROSAT CZTI

Data Quality Report

Orbit 31549

Creation date: 2024-06-27T20:29:49.936171
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_056T01_9000004598_31549cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31549cztM0_level2_quad_clean.evt
Size (bytes)887,811,840150,266,880
Size846.7 MB 143.3 MB
Events in quadrant A5,287,881966,939
Events in quadrant B8,789,539958,441
Events in quadrant C5,736,946919,105
Events in quadrant D6,297,762912,896

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233612
B0349102
C0244602
D0261402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114642081.814375%
B114653182.773659%
C114653202.791103%
D114653332.904492%

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 11973 11463 0 0 0.00% 0.00%
B 11974 11464 9 9 0.08% 0.08%
C 11974 11464 54 54 0.45% 0.47%
D 11974 11464 163 163 1.36% 1.42%

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 19479 66.09 1368 1339 274.5
A 3 137 14503 47.96 1368 1339 274.5
A 0 226 11368 36.54 1368 1339 274.5
B 6 159 3104956 12023.05 1349 1315 258.1
B 4 80 214479 825.77 1349 1315 258.1
B 0 190 54882 207.51 1349 1315 258.1
C 10 22 229808 750.42 1301 1305 304.5
C 14 238 209667 684.27 1301 1305 304.5
C 2 16 88496 286.34 1301 1305 304.5
D 8 195 488340 1566.83 1310 1271 310.9
D 2 250 372324 1193.63 1310 1271 310.9
D 7 223 217608 695.93 1310 1271 310.9

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