ASTROSAT CZTI

Data Quality Report

Orbit 26883

Creation date: 2024-06-27T19:34:01.974010
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/AS1T03_224T01_9000003872_26883cztM0_level2.evt modeM0/AS1T03_224T01_9000003872_26883cztM0_level2_quad_clean.evt
Size (bytes)646,706,88092,321,280
Size616.7 MB 88.0 MB
Events in quadrant A5,973,336556,110
Events in quadrant B4,547,807594,109
Events in quadrant C3,860,258574,328
Events in quadrant D4,705,591558,689

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224650
B0180350
C0157440
D0186350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73497099.647571%
B73504616.272109%
C73503254.421769%
D73503174.312925%

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 8864 7349 375 375 4.23% 5.10%
B 8865 7350 70 70 0.79% 0.95%
C 8865 7350 0 0 0.00% 0.00%
D 8865 7350 111 111 1.25% 1.51%

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 13 2373118 12748.08 934 914 186.1
A 13 254 10313 50.51 934 914 186.1
A 3 137 8993 43.41 934 914 186.1
B 3 64 590163 3296.82 935 911 178.7
B 10 246 175402 976.26 935 911 178.7
B 0 190 98036 543.4 935 911 178.7
C 14 238 145795 675.5 919 924 214.5
C 0 79 95093 439.09 919 924 214.5
C 3 233 24179 108.43 919 924 214.5
D 7 80 785367 3624.92 921 898 216.4
D 2 250 141301 648.78 921 898 216.4
D 1 52 107812 494.03 921 898 216.4

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