ASTROSAT CZTI

Data Quality Report

Orbit 21364

Creation date: 2024-06-27T18:26:48.628406
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/AS1A05_041T01_9000003150_21364cztM0_level2.evt modeM0/AS1A05_041T01_9000003150_21364cztM0_level2_quad_clean.evt
Size (bytes)331,738,56044,375,040
Size316.4 MB 42.3 MB
Events in quadrant A2,103,383277,294
Events in quadrant B2,170,408277,473
Events in quadrant C3,320,573262,051
Events in quadrant D2,196,000260,374

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086361
B088741
C0123311
D088321

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3761370.983781%
B3761561.488966%
C37612927.763893%
D3761280.744483%

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 3761 3761 0 0 0.00% 0.00%
B 3761 3761 7 7 0.19% 0.19%
C 3761 3761 91 91 2.42% 2.42%
D 3761 3761 3 3 0.08% 0.08%

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 5 168 43470 401.66 533 526 106.9
A 13 254 5614 47.59 533 526 106.9
A 0 226 4533 37.48 533 526 106.9
B 0 197 91205 924.61 523 513 98.1
B 0 230 26035 260.2 523 513 98.1
B 3 64 12475 121.95 523 513 98.1
C 3 233 1298921 11356.32 498 504 114.3
C 14 238 79969 695.02 498 504 114.3
C 13 61 3362 25.0 498 504 114.3
D 12 235 223636 1790.25 517 503 124.6
D 2 234 14425 111.7 517 503 124.6
D 1 52 8411 63.45 517 503 124.6

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