ASTROSAT CZTI

Data Quality Report

Orbit 10855

Creation date: 2024-06-27T16:04:34.160343
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/AS1A03_086T01_9000001568_10855cztM0_level2.evt modeM0/AS1A03_086T01_9000001568_10855cztM0_level2_quad_clean.evt
Size (bytes)623,082,24071,516,160
Size594.2 MB 68.2 MB
Events in quadrant A5,970,722426,412
Events in quadrant B4,537,999437,406
Events in quadrant C3,227,172442,512
Events in quadrant D4,702,278413,105

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225082
B0175301
C0133231
D0184841

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63825017.850204%
B63823745.860232%
C6382731.143842%
D63822233.494202%

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 7627 6383 257 257 3.37% 4.03%
B 7627 6383 184 184 2.41% 2.88%
C 7627 6383 0 0 0.00% 0.00%
D 7627 6383 121 121 1.59% 1.90%

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 8 5 2328878 14024.05 831 818 166.0
A 8 15 141512 847.53 831 818 166.0
A 15 223 90004 537.25 831 818 166.0
B 4 239 1129392 7301.78 831 815 154.6
B 0 214 40352 255.8 831 815 154.6
B 0 219 27197 170.69 831 815 154.6
C 14 234 8533 40.63 824 831 189.6
C 14 67 6984 32.46 824 831 189.6
C 13 61 6286 28.78 824 831 189.6
D 13 152 606152 3127.47 818 799 193.6
D 5 222 213166 1097.16 818 799 193.6
D 2 14 175137 900.69 818 799 193.6

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