ASTROSAT CZTI

Data Quality Report

Orbit 20317

Creation date: 2024-06-27T18:13:48.539272
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_174T01_9000003008_20317cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20317cztM0_level2_quad_clean.evt
Size (bytes)498,977,28093,556,800
Size475.9 MB 89.2 MB
Events in quadrant A3,475,934592,356
Events in quadrant B3,630,994598,467
Events in quadrant C4,105,042573,921
Events in quadrant D3,416,407572,974

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149672
B0152882
C0170062
D0149222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71151361.911455%
B7116841.180438%
C71161161.630129%
D7116370.519955%

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 8980 7117 0 0 0.00% 0.00%
B 8981 7118 5 5 0.06% 0.07%
C 8981 7118 3 3 0.03% 0.04%
D 8981 7118 16 16 0.18% 0.22%

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 14 111 52441 289.51 877 857 178.2
A 14 238 27669 150.48 877 857 178.2
A 13 254 11030 57.1 877 857 178.2
B 10 247 30327 175.6 875 852 167.9
B 4 142 25317 145.75 875 852 167.9
B 0 197 22987 131.87 875 852 167.9
C 3 9 651988 3276.09 845 851 198.8
C 14 238 132232 661.02 845 851 198.8
C 0 207 19989 96.29 845 851 198.8
D 9 1 61444 291.51 858 834 207.9
D 1 52 50735 240.01 858 834 207.9
D 2 184 32241 151.06 858 834 207.9

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