ASTROSAT CZTI

Data Quality Report

Orbit 04240

Creation date: 2024-06-27T14:39:13.140227
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/AS1G05_240T01_9000000536_04240cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04240cztM0_level2_quad_clean.evt
Size (bytes)825,687,36067,337,280
Size787.4 MB 64.2 MB
Events in quadrant A3,278,981423,570
Events in quadrant B6,736,832422,123
Events in quadrant C3,026,496411,989
Events in quadrant D11,533,066333,823

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135482
B0245641
C0131331
D0386361

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6405931.451991%
B640584213.145980%
C6405510.796253%
D6405166225.948478%

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 7675 6405 1 1 0.01% 0.02%
B 7675 6406 635 635 8.27% 9.91%
C 7675 6406 0 0 0.00% 0.00%
D 7675 6405 1682 1682 21.92% 26.26%

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 0 149 60112 361.99 816 801 163.8
A 8 15 37050 221.24 816 801 163.8
A 15 234 17974 104.81 816 801 163.8
B 3 0 3142061 20791.3 797 781 151.1
B 7 252 233912 1543.03 797 781 151.1
B 15 204 181200 1194.15 797 781 151.1
C 13 61 6487 31.93 773 780 178.8
C 9 144 3712 16.4 773 780 178.8
C 10 65 2723 10.87 773 780 178.8
D 2 63 7770605 45520.61 715 698 170.7
D 15 217 740982 4337.01 715 698 170.7
D 1 52 98130 570.81 715 698 170.7

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