ASTROSAT CZTI

Data Quality Report

Orbit 18646

Creation date: 2024-06-27T17:52:55.034716
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/AS1A06_003T01_9000002786_18646cztM0_level2.evt modeM0/AS1A06_003T01_9000002786_18646cztM0_level2_quad_clean.evt
Size (bytes)516,381,12097,865,280
Size492.5 MB 93.3 MB
Events in quadrant A4,480,753616,628
Events in quadrant B3,404,307635,937
Events in quadrant C3,368,316623,112
Events in quadrant D3,916,526606,745

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179352
B0147052
C0143952
D0163232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69111341.938938%
B6911851.229923%
C6911971.403560%
D6910801.157742%

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 7646 6912 81 81 1.06% 1.17%
B 7646 6912 2 2 0.03% 0.03%
C 7646 6912 0 0 0.00% 0.00%
D 7645 6911 34 34 0.44% 0.49%

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 1246673 7370.09 833 816 169.0
A 6 16 13489 74.97 833 816 169.0
A 11 29 12560 69.47 833 816 169.0
B 0 183 71866 439.59 839 817 161.6
B 0 230 20017 118.79 839 817 161.6
B 12 111 19927 118.23 839 817 161.6
C 14 238 126955 655.41 821 827 192.4
C 3 233 27088 136.46 821 827 192.4
C 9 221 6736 30.71 821 827 192.4
D 7 238 418531 2093.75 822 796 199.5
D 1 52 318755 1593.66 822 796 199.5
D 2 152 46497 229.06 822 796 199.5

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