ASTROSAT CZTI

Data Quality Report

Orbit 18820

Creation date: 2024-06-27T17:55:16.202877
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_173T01_9000002812_18820cztM0_level2.evt modeM0/AS1A05_173T01_9000002812_18820cztM0_level2_quad_clean.evt
Size (bytes)532,229,76080,133,120
Size507.6 MB 76.4 MB
Events in quadrant A4,046,285486,762
Events in quadrant B3,996,373492,852
Events in quadrant C3,787,077469,955
Events in quadrant D3,787,922462,980

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163912
B0163592
C0156972
D0161292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73772052.778907%
B73772072.806019%
C73772152.914464%
D73771872.534906%

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 7862 7378 29 29 0.37% 0.39%
B 7862 7378 18 18 0.23% 0.24%
C 7862 7378 4 4 0.05% 0.05%
D 7862 7378 28 28 0.36% 0.38%

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 8 144 352220 1813.28 948 927 193.7
A 9 143 31620 158.43 948 927 193.7
A 13 254 12327 58.84 948 927 193.7
B 4 216 90099 487.86 940 917 182.8
B 7 220 67735 365.52 940 917 182.8
B 6 36 50778 272.76 940 917 182.8
C 14 238 139473 642.66 904 910 215.6
C 3 233 80152 367.53 904 910 215.6
C 0 207 40807 185.04 904 910 215.6
D 7 38 224787 983.72 922 896 227.6
D 7 238 44753 192.7 922 896 227.6
D 2 234 31401 134.03 922 896 227.6

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