ASTROSAT CZTI

Data Quality Report

Orbit 11232

Creation date: 2024-06-27T16:10:05.443845
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/AS1T01_200T01_9000001638_11232cztM0_level2.evt modeM0/AS1T01_200T01_9000001638_11232cztM0_level2_quad_clean.evt
Size (bytes)566,910,720119,563,200
Size540.6 MB 114.0 MB
Events in quadrant A4,035,226796,045
Events in quadrant B3,415,588827,471
Events in quadrant C3,183,852831,922
Events in quadrant D6,110,761729,049

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162243
B0144182
C0137252
D0224742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62481822.912932%
B62481542.464789%
C6248831.328425%
D624880012.804097%

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 7528 6249 80 80 1.06% 1.28%
B 7528 6249 54 54 0.72% 0.86%
C 7528 6249 35 35 0.46% 0.56%
D 7528 6249 819 819 10.88% 13.11%

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 15 174 486845 3339.88 720 704 145.6
A 8 5 462873 3175.19 720 704 145.6
A 14 238 250007 1712.76 720 704 145.6
B 4 239 449954 3281.12 736 718 136.9
B 3 189 30352 216.44 736 718 136.9
B 0 214 18815 132.18 736 718 136.9
C 4 254 361403 2182.13 721 727 165.3
C 13 61 5226 27.22 721 727 165.3
C 12 4 4160 20.77 721 727 165.3
D 1 52 2401626 14811.01 675 657 162.1
D 8 195 478617 2948.42 675 657 162.1
D 2 14 261370 1608.28 675 657 162.1

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