ASTROSAT CZTI

Data Quality Report

Orbit 24737

Creation date: 2024-06-27T19:09:18.751377
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_194T01_9000003620_24737cztM0_level2.evt modeM0/AS1T03_194T01_9000003620_24737cztM0_level2_quad_clean.evt
Size (bytes)617,964,48074,681,280
Size589.3 MB 71.2 MB
Events in quadrant A3,509,888477,150
Events in quadrant B3,654,266481,503
Events in quadrant C6,785,744425,695
Events in quadrant D4,344,788442,288

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142892
B0148032
C0245062
D0166812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6221570.916251%
B62211001.607459%
C62213896.253014%
D62211622.604083%

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 7580 6220 0 0 0.00% 0.00%
B 7581 6221 13 13 0.17% 0.21%
C 7581 6221 71 71 0.94% 1.14%
D 7581 6222 130 130 1.71% 2.09%

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 13 254 8724 44.37 907 896 176.4
A 0 226 7960 40.04 907 896 176.4
A 3 137 7508 37.48 907 896 176.4
B 3 64 96639 582.54 889 873 164.4
B 6 36 58019 347.61 889 873 164.4
B 12 111 19510 113.37 889 873 164.4
C 7 247 3110816 16458.06 829 838 189.0
C 2 16 290438 1532.57 829 838 189.0
C 14 238 135044 710.22 829 838 189.0
D 1 52 896863 4383.36 856 834 204.4
D 8 195 164353 799.93 856 834 204.4
D 7 238 39050 186.95 856 834 204.4

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