ASTROSAT CZTI

Data Quality Report

Orbit 20240227_A13_031T02_9000006100_level2

Creation date: 2024-03-02T09:59:29.450189
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/AS1A13_031T02_9000006100cztM0_level2.fits modeM0/AS1A13_031T02_9000006100cztM0_level2_quad_clean.evt
Size (bytes)214,217,280205,047,360
Size204.3 MB 195.5 MB
Events in quadrant A1,265,7981,195,403
Events in quadrant B1,244,3141,218,518
Events in quadrant C1,298,4081,176,294
Events in quadrant D1,086,3561,026,801

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04700
B04700
C04700
D04700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0741220
B0511690
C0494720
D0586420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A231386732.908635%
B231395242.264575%
C231394031.741648%
D2313911975.173084%

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 27398 23138 0 0 0.00% 0.00%
B 27399 23139 0 0 0.00% 0.00%
C 27399 23139 0 0 0.00% 0.00%
D 27399 23119 0 0 0.00% 0.00%

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 7 110 1017 8.35 329 310 84.7
A 14 95 1001 8.16 329 310 84.7
A 15 236 999 8.14 329 310 84.7
B 2 9 1120 12.13 329 313 66.5
B 2 8 911 8.99 329 313 66.5
B 3 17 906 8.92 329 313 66.5
C 3 202 981 7.47 343 321 88.3
C 1 81 972 7.37 343 321 88.3
C 3 203 948 7.1 343 321 88.3
D 10 189 830 6.21 311 282 88.2
D 6 79 800 5.87 311 282 88.2
D 12 6 799 5.86 311 282 88.2

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