ASTROSAT CZTI

Data Quality Report

Orbit 11096

Creation date: 2024-06-27T16:08:14.192771
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/AS1G08_071T02_9000001620_11096cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11096cztM0_level2_quad_clean.evt
Size (bytes)996,408,000152,288,640
Size950.2 MB 145.2 MB
Events in quadrant A5,757,406959,806
Events in quadrant B8,125,002942,549
Events in quadrant C5,548,794963,334
Events in quadrant D9,903,245885,314

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255784
B0323073
C0253383
D0379793

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12455840.674428%
B124556144.929747%
C12455330.264954%
D12456126910.187861%

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 14085 12457 0 0 0.00% 0.00%
B 14085 12457 349 349 2.48% 2.80%
C 14085 12457 0 0 0.00% 0.00%
D 14086 12456 957 957 6.79% 7.68%

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 8 15 73737 243.21 1461 1429 297.3
A 1 162 15995 48.99 1461 1429 297.3
A 14 238 15785 48.29 1461 1429 297.3
B 10 16 1117934 4039.92 1441 1403 276.4
B 4 239 937442 3386.85 1441 1403 276.4
B 15 204 208226 748.34 1441 1403 276.4
C 13 61 10471 27.32 1421 1429 331.0
C 8 222 4757 10.05 1421 1429 331.0
C 14 234 4272 8.59 1421 1429 331.0
D 4 95 1670865 5082.79 1356 1315 328.5
D 10 253 1432450 4356.96 1356 1315 328.5
D 1 52 906479 2755.69 1356 1315 328.5

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