ASTROSAT CZTI

Data Quality Report

Orbit 47020

Creation date: 2024-06-27T23:30:49.001954
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/AS1C09_005T01_9000006296_47020cztM0_level2.fits modeM0/AS1C09_005T01_9000006296_47020cztM0_level2_quad_clean.evt
Size (bytes)1,170,538,560181,275,840
Size1.1 GB 172.9 MB
Events in quadrant A11,642,5221,289,186
Events in quadrant B18,998,851886,989
Events in quadrant C5,685,9851,274,126
Events in quadrant D6,037,0231,174,025

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0424952
B0651592
C0263642
D0273952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124852772.218662%
B12485483238.702443%
C124851291.033240%
D124861571.257408%

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 13530 12487 19 19 0.14% 0.15%
B 13530 12487 3709 3709 27.41% 29.70%
C 13530 12487 81 81 0.60% 0.65%
D 13531 12488 86 86 0.64% 0.69%

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 83 6179699 22024.48 1347 1314 280.5
A 9 191 179101 633.77 1347 1314 280.5
A 14 235 24336 82.07 1347 1314 280.5
B 3 112 13841182 60692.46 1169 1127 228.0
B 0 200 134346 584.2 1169 1127 228.0
B 5 255 113438 492.51 1169 1127 228.0
C 14 254 416956 1328.93 1331 1335 312.7
C 12 250 50256 156.42 1331 1335 312.7
C 12 249 20790 62.21 1331 1335 312.7
D 2 249 382412 1151.6 1329 1286 331.0
D 13 249 243385 731.52 1329 1286 331.0
D 2 234 66904 198.27 1329 1286 331.0

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