ASTROSAT CZTI

Data Quality Report

Orbit 14797

Creation date: 2024-06-27T16:59:48.584758
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/AS1A04_022T02_9000002184_14797cztM0_level2.evt modeM0/AS1A04_022T02_9000002184_14797cztM0_level2_quad_clean.evt
Size (bytes)586,886,40091,117,440
Size559.7 MB 86.9 MB
Events in quadrant A3,794,353564,677
Events in quadrant B3,976,787564,259
Events in quadrant C5,449,490543,659
Events in quadrant D4,026,340546,065

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163303
B0168212
C0215502
D0174472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7772991.273803%
B77721551.994339%
C77722603.345342%
D7772911.170870%

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 8488 7775 0 0 0.00% 0.00%
B 8488 7775 14 14 0.16% 0.18%
C 8488 7775 127 127 1.50% 1.63%
D 8488 7775 33 33 0.39% 0.42%

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 12 189 76705 395.7 948 927 191.5
A 11 29 26843 135.33 948 927 191.5
A 15 223 18622 92.4 948 927 191.5
B 3 64 38430 209.75 942 917 178.8
B 3 209 32961 179.17 942 917 178.8
B 0 228 31534 171.19 942 917 178.8
C 3 233 1128769 5408.33 904 906 208.5
C 4 254 734310 3516.82 904 906 208.5
C 3 232 18122 82.55 904 906 208.5
D 15 0 268730 1088.22 913 894 246.1
D 10 70 196674 795.45 913 894 246.1
D 2 234 35106 139.0 913 894 246.1

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