ASTROSAT CZTI

Data Quality Report

Orbit 19439

Creation date: 2024-06-27T18:02:55.408124
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_221T01_9000002888_19439cztM0_level2.evt modeM0/AS1A05_221T01_9000002888_19439cztM0_level2_quad_clean.evt
Size (bytes)598,403,52061,649,280
Size570.7 MB 58.8 MB
Events in quadrant A3,382,006377,224
Events in quadrant B3,492,258378,336
Events in quadrant C3,435,514361,612
Events in quadrant D7,395,189318,353

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137231
B0141461
C0138461
D0261031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6166781.265002%
B6167971.572888%
C61671071.735041%
D6167153524.890546%

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 7491 6166 1 1 0.01% 0.02%
B 7492 6167 6 6 0.08% 0.10%
C 7492 6167 6 6 0.08% 0.10%
D 7492 6167 1413 1413 18.86% 22.91%

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 3 1 33971 194.68 862 849 170.1
A 11 29 21784 123.05 862 849 170.1
A 13 254 9767 52.42 862 849 170.1
B 7 220 53226 329.39 848 829 159.1
B 3 64 25134 152.79 848 829 159.1
B 4 216 21030 126.99 848 829 159.1
C 14 238 129960 695.6 810 817 185.7
C 9 221 73469 391.33 810 817 185.7
C 0 207 68399 364.02 810 817 185.7
D 7 238 4463301 24698.81 753 736 180.7
D 12 218 32566 176.17 753 736 180.7
D 2 234 25141 135.07 753 736 180.7

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