ASTROSAT CZTI

Data Quality Report

Orbit 35379

Creation date: 2022-04-16T11:05:51.464971
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/AS1A11_099T01_9000005068_35379cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35379cztM0_level2_quad_clean.evt
Size (bytes)818,507,52053,395,200
Size780.6 MB 50.9 MB
Events in quadrant A2,617,765403,946
Events in quadrant B8,498,780248,622
Events in quadrant C4,458,226385,445
Events in quadrant D8,884,001232,764

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105073
B0285702
C0164332
D0298402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4903110.224352%
B4903265654.170916%
C49032976.057516%
D4903252751.539874%

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 7026 4904 2 2 0.03% 0.04%
B 7026 4904 2320 2320 33.02% 47.31%
C 7026 4904 234 234 3.33% 4.77%
D 7026 4904 2451 2451 34.88% 49.98%

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 117628 919.84 633 623 127.2
A 14 254 20954 159.83 633 623 127.2
A 9 143 20378 155.3 633 623 127.2
B 4 251 5820335 66490.56 459 448 87.5
B 5 236 344753 3933.59 459 448 87.5
B 5 200 242979 2770.85 459 448 87.5
C 10 49 1365368 10130.39 587 591 134.7
C 0 10 520946 3862.46 587 591 134.7
C 15 214 204429 1513.04 587 591 134.7
D 7 80 5891149 54026.51 440 426 109.0
D 8 195 586289 5373.22 440 426 109.0
D 12 217 321598 2945.62 440 426 109.0

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