ASTROSAT CZTI

Data Quality Report

Orbit 06261

Creation date: 2024-06-27T15:04:51.782677
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/AS1A02_151T01_9000000818_06261cztM0_level2.evt modeM0/AS1A02_151T01_9000000818_06261cztM0_level2_quad_clean.evt
Size (bytes)473,008,32087,171,840
Size451.1 MB 83.1 MB
Events in quadrant A3,058,132555,365
Events in quadrant B3,644,754552,519
Events in quadrant C2,894,123551,853
Events in quadrant D4,271,920512,069

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138552
B0154952
C0136292
D0175712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6704470.701074%
B67042393.565036%
C6704340.507160%
D67043945.877088%

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 7474 6706 1 1 0.01% 0.01%
B 7474 6706 95 95 1.27% 1.42%
C 7474 6706 0 0 0.00% 0.00%
D 7474 6705 307 307 4.11% 4.58%

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 14 111 58275 365.31 761 744 157.5
A 15 236 36205 225.17 761 744 157.5
A 8 15 15454 93.4 761 744 157.5
B 3 64 558796 3804.02 760 743 146.7
B 0 219 96425 652.23 760 743 146.7
B 4 80 28551 189.56 760 743 146.7
C 13 61 5859 29.5 740 743 173.4
C 8 222 4398 21.08 740 743 173.4
C 3 202 1878 6.55 740 743 173.4
D 12 220 1355777 7711.27 716 693 175.7
D 2 33 65465 368.59 716 693 175.7
D 5 97 46865 262.75 716 693 175.7

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