ASTROSAT CZTI

Data Quality Report

Orbit 31996

Creation date: 2024-06-27T20:35:03.353806
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/AS1C06_010T03_9000004676_31996cztM0_level2.evt modeM0/AS1C06_010T03_9000004676_31996cztM0_level2_quad_clean.evt
Size (bytes)669,479,040142,367,040
Size638.5 MB 135.8 MB
Events in quadrant A3,604,651986,765
Events in quadrant B6,522,991958,275
Events in quadrant C4,934,071924,530
Events in quadrant D4,704,146918,123

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156692
B0249842
C0197298
D0190602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7528540.717322%
B75283744.968119%
C75282953.918704%
D75283034.024973%

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 7963 7528 22 22 0.28% 0.29%
B 7963 7528 209 209 2.62% 2.78%
C 7962 7527 27 27 0.34% 0.36%
D 7962 7527 213 213 2.68% 2.83%

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 73546 400.15 908 891 181.6
A 13 6 25389 134.92 908 891 181.6
A 13 254 13190 67.74 908 891 181.6
B 6 159 2122414 12632.46 884 861 167.9
B 10 245 599077 3561.98 884 861 167.9
B 5 172 190210 1127.45 884 861 167.9
C 3 233 1185286 5899.05 863 866 200.8
C 0 10 154016 762.77 863 866 200.8
C 14 238 140505 695.48 863 866 200.8
D 2 250 528252 2533.45 874 847 208.2
D 13 249 449168 2153.56 874 847 208.2
D 8 195 236570 1132.32 874 847 208.2

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