ASTROSAT CZTI

Data Quality Report

Orbit 19441

Creation date: 2024-06-27T18:02:56.941097
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_19441cztM0_level2.evt modeM0/AS1A05_221T01_9000002888_19441cztM0_level2_quad_clean.evt
Size (bytes)544,314,24072,495,360
Size519.1 MB 69.1 MB
Events in quadrant A3,601,408443,219
Events in quadrant B3,417,420452,245
Events in quadrant C3,271,335434,840
Events in quadrant D5,767,534425,531

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144841
B0139961
C0133701
D0213641

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62921913.035601%
B62931512.399491%
C62931362.161131%
D629378812.521850%

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 7382 6292 54 54 0.73% 0.86%
B 7383 6293 6 6 0.08% 0.10%
C 7383 6293 6 6 0.08% 0.10%
D 7383 6293 573 573 7.76% 9.11%

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 16 339553 2027.97 834 818 167.0
A 11 29 18895 108.23 834 818 167.0
A 12 96 13243 74.39 834 818 167.0
B 0 190 50226 311.85 828 810 158.5
B 7 220 28759 176.38 828 810 158.5
B 4 216 26864 164.42 828 810 158.5
C 14 238 125423 667.13 796 803 186.8
C 0 207 31572 164.72 796 803 186.8
C 9 54 8705 42.3 796 803 186.8
D 7 238 2715759 14330.86 780 757 189.5
D 12 218 41193 213.44 780 757 189.5
D 2 234 30048 154.61 780 757 189.5

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