ASTROSAT CZTI

Data Quality Report

Orbit 04791

Creation date: 2024-06-27T14:47:04.399503
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/AS1G05_156T09_9000000604_04791cztM0_level2.evt modeM0/AS1G05_156T09_9000000604_04791cztM0_level2_quad_clean.evt
Size (bytes)548,317,44076,536,000
Size522.9 MB 73.0 MB
Events in quadrant A3,254,229502,460
Events in quadrant B4,025,907495,199
Events in quadrant C3,228,113499,214
Events in quadrant D5,672,236382,684

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139853
B0161432
C0138712
D0211822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62631432.283251%
B62631732.762255%
C6263480.766406%
D6264121119.332695%

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 7553 6264 83 83 1.10% 1.33%
B 7553 6264 95 95 1.26% 1.52%
C 7553 6264 7 7 0.09% 0.11%
D 7554 6265 1086 1086 14.38% 17.33%

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 0 50 301176 2034.66 732 716 147.7
A 0 118 83109 557.95 732 716 147.7
A 0 149 18770 122.26 732 716 147.7
B 8 3 461346 3290.96 744 727 140.0
B 14 167 222379 1583.62 744 727 140.0
B 0 219 171389 1219.32 744 727 140.0
C 8 208 280673 1661.16 730 733 168.5
C 1 16 71947 422.58 730 733 168.5
C 1 3 9078 49.52 730 733 168.5
D 1 52 2621294 17329.4 630 613 151.2
D 13 235 233789 1541.89 630 613 151.2
D 2 63 134690 886.59 630 613 151.2

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