ASTROSAT CZTI

Data Quality Report

Orbit 27121

Creation date: 2024-06-27T19:36:44.402282
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_244T01_9000003912_27121cztM0_level2.evt modeM0/AS1T03_244T01_9000003912_27121cztM0_level2_quad_clean.evt
Size (bytes)569,476,80097,266,240
Size543.1 MB 92.8 MB
Events in quadrant A3,230,484662,279
Events in quadrant B5,645,239613,836
Events in quadrant C2,984,765636,324
Events in quadrant D4,974,833608,690

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135200
B0208100
C0127240
D0189790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6073701.152643%
B607388714.605631%
C60731061.745431%
D60732854.692903%

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 7068 6074 5 5 0.07% 0.08%
B 7068 6074 729 729 10.31% 12.00%
C 7068 6074 3 3 0.04% 0.05%
D 7068 6074 221 221 3.13% 3.64%

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 13 170 100150 648.51 766 750 153.3
A 14 235 73059 471.76 766 750 153.3
A 12 189 56330 362.62 766 750 153.3
B 10 245 1965291 14239.18 716 697 138.0
B 0 189 692344 5012.99 716 697 138.0
B 3 64 78802 566.1 716 697 138.0
C 14 238 117228 680.92 727 733 171.1
C 15 208 16663 93.11 727 733 171.1
C 14 225 12844 70.79 727 733 171.1
D 1 52 1438225 7500.37 722 709 191.7
D 7 38 359791 1873.54 722 709 191.7
D 2 250 251735 1309.75 722 709 191.7

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