ASTROSAT CZTI

Data Quality Report

Orbit 06486

Creation date: 2024-06-27T15:07:52.339739
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_046T01_9000000864_06486cztM0_level2.evt modeM0/AS1A02_046T01_9000000864_06486cztM0_level2_quad_clean.evt
Size (bytes)388,111,680109,131,840
Size370.1 MB 104.1 MB
Events in quadrant A2,844,165732,815
Events in quadrant B3,038,943738,955
Events in quadrant C2,563,702718,055
Events in quadrant D2,897,692695,402

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126683
B0131552
C0121922
D0127702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60121282.129075%
B60121552.578177%
C6012621.031271%
D6012781.297405%

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 7002 6014 14 14 0.20% 0.23%
B 7002 6014 36 36 0.51% 0.60%
C 7002 6014 0 0 0.00% 0.00%
D 7002 6014 3 3 0.04% 0.05%

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 15 236 133709 946.21 686 671 140.6
A 8 15 49415 346.68 686 671 140.6
A 10 133 11694 78.4 686 671 140.6
B 4 170 137211 1047.36 685 669 130.4
B 0 219 71321 541.94 685 669 130.4
B 3 220 54877 415.81 685 669 130.4
C 13 61 5205 30.14 654 656 150.9
C 1 16 4125 22.99 654 656 150.9
C 12 4 3883 21.38 654 656 150.9
D 8 195 205167 1270.02 660 637 161.0
D 2 152 133550 825.31 660 637 161.0
D 2 234 18187 108.98 660 637 161.0

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