ASTROSAT CZTI

Data Quality Report

Orbit 00669

Creation date: 2024-06-27T14:01:19.244828
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_141T01_9000000096_00669cztM0_level2.evt modeM0/AS1P01_141T01_9000000096_00669cztM0_level2_quad_clean.evt
Size (bytes)820,002,24038,531,520
Size782.0 MB 36.7 MB
Events in quadrant A5,566,055212,408
Events in quadrant B5,521,687214,756
Events in quadrant C5,214,219212,866
Events in quadrant D8,222,737198,651

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199401
B0198381
C0188641
D0278441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A459280.174216%
B453080.176600%
C475810.021017%
D47583787.944515%

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 6912 4594 97 97 1.40% 2.11%
B 6910 4532 82 82 1.19% 1.81%
C 6913 4759 36 36 0.52% 0.76%
D 6913 4759 1543 1543 22.32% 32.42%

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 14 79 23796 70.18 1422 1412 318.9
A 12 150 15446 44.0 1422 1412 318.9
A 0 238 9863 26.5 1422 1412 318.9
B 7 221 118633 354.3 1374 1387 330.9
B 5 191 45418 133.06 1374 1387 330.9
B 0 220 31886 92.16 1374 1387 330.9
C 15 241 11949 28.37 1323 1374 372.8
C 2 192 4744 9.04 1323 1374 372.8
C 5 254 4141 7.42 1323 1374 372.8
D 12 237 2924999 7192.14 1293 1348 406.5
D 13 216 67281 162.19 1293 1348 406.5
D 13 221 55983 134.4 1293 1348 406.5

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