ASTROSAT CZTI

Data Quality Report

Orbit 20190712_A05_208T03_9000003026_level2

Creation date: 2025-12-02T00:53:39.281847
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/AS1A05_208T03_9000003026cztM0_level2.fits modeM0/AS1A05_208T03_9000003026cztM0_level2_quad_clean.evt
Size (bytes)911,926,080852,315,840
Size869.7 MB 812.8 MB
Events in quadrant A5,588,0805,084,917
Events in quadrant B5,376,5825,101,386
Events in quadrant C5,508,7124,873,167
Events in quadrant D4,567,2304,179,121

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02103070
B02169140
C01994040
D03117130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019520
B019520
C019520
D019520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9590420372.123999%
B9590521132.203222%
C9590515941.662061%
D9590577148.043376%

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 108779 95886 0 0 0.00% 0.00%
B 108780 95889 0 0 0.00% 0.00%
C 108780 95891 0 0 0.00% 0.00%
D 108779 95811 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 0 29 5494 11.42 1455 1364 361.8
A 7 110 4591 8.92 1455 1364 361.8
A 9 19 4249 7.97 1455 1364 361.8
B 2 9 4425 11.09 1425 1363 276.0
B 2 8 3714 8.52 1425 1363 276.0
B 5 225 3531 7.86 1425 1363 276.0
C 12 241 3946 6.95 1455 1360 372.1
C 2 191 3825 6.62 1455 1360 372.1
C 3 126 3652 6.16 1455 1360 372.1
D 6 231 3308 6.1 1308 1190 347.1
D 3 14 3288 6.04 1308 1190 347.1
D 10 189 3232 5.88 1308 1190 347.1

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