ASTROSAT CZTI

Data Quality Report

Orbit 46987

Creation date: 2024-06-27T23:30:21.343041
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/AS1A13_071T08_9000006292_46987cztM0_level2.fits modeM0/AS1A13_071T08_9000006292_46987cztM0_level2_quad_clean.evt
Size (bytes)566,075,52068,529,600
Size539.9 MB 65.4 MB
Events in quadrant A4,512,274528,338
Events in quadrant B10,204,095215,942
Events in quadrant C2,671,793507,282
Events in quadrant D3,175,356470,179

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01644411
B03377827
C0117660
D0128575

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5029500.994233%
B5028338567.322991%
C50321543.060413%
D5030961.908549%

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 5032 5031 7 7 0.14% 0.14%
B 5031 5031 2957 2957 58.78% 58.78%
C 5031 5031 122 122 2.42% 2.42%
D 5033 5032 82 82 1.63% 1.63%

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 2405551 21657.85 532 520 111.0
A 0 243 19106 167.37 532 520 111.0
A 7 3 18490 161.82 532 520 111.0
B 3 112 8531008 105316.57 404 393 81.0
B 4 171 31783 387.53 404 393 81.0
B 0 200 13316 159.54 404 393 81.0
C 14 254 618384 4981.0 519 521 124.0
C 12 2 13363 103.52 519 521 124.0
C 12 250 12669 97.93 519 521 124.0
D 1 52 789588 6024.95 520 503 131.0
D 13 249 332123 2532.04 520 503 131.0
D 2 234 25670 192.16 520 503 131.0

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