ASTROSAT CZTI

Data Quality Report

Orbit 31732

Creation date: 2024-06-27T20:32:03.509439
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/AS1T04_034T01_9000004632_31732cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31732cztM0_level2_quad_clean.evt
Size (bytes)709,021,440103,271,040
Size676.2 MB 98.5 MB
Events in quadrant A6,223,879647,066
Events in quadrant B6,025,305684,790
Events in quadrant C4,195,884669,369
Events in quadrant D4,570,891654,341

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230222
B0224462
C0167972
D0180272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6774103615.293770%
B67742493.675819%
C67743525.196339%
D67741061.564807%

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 7639 6775 592 592 7.75% 8.74%
B 7639 6775 43 43 0.56% 0.63%
C 7639 6775 134 134 1.75% 1.98%
D 7639 6775 36 36 0.47% 0.53%

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 0 13 3074931 18755.25 816 801 163.9
A 13 254 12204 69.57 816 801 163.9
A 3 137 7989 43.85 816 801 163.9
B 6 159 1922433 11738.1 859 839 163.7
B 4 80 514157 3135.62 859 839 163.7
B 5 172 50408 302.79 859 839 163.7
C 0 10 778284 4056.05 820 828 191.7
C 14 238 131606 682.28 820 828 191.7
C 10 22 27416 138.71 820 828 191.7
D 8 195 1114692 5487.09 849 829 203.0
D 12 233 196024 961.57 849 829 203.0
D 13 249 33714 162.0 849 829 203.0

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