ASTROSAT CZTI

Data Quality Report

Orbit 35252

Creation date: 2022-04-06T01:01:48.088585
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/AS1A11_047T09_9000005054_35252cztM0_level2.evt modeM0/AS1A11_047T09_9000005054_35252cztM0_level2_quad_clean.evt
Size (bytes)678,801,60066,542,400
Size647.4 MB 63.5 MB
Events in quadrant A2,756,773448,189
Events in quadrant B8,353,969349,292
Events in quadrant C3,153,206436,866
Events in quadrant D5,900,210372,525

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120153
B0288562
C0127742
D0215352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5815140.240757%
B5815195433.602752%
C58151192.046432%
D581580513.843508%

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 7188 5816 2 2 0.03% 0.03%
B 7188 5816 1489 1489 20.72% 25.60%
C 7188 5816 91 91 1.27% 1.56%
D 7187 5815 716 716 9.96% 12.31%

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 10 83 105649 764.54 673 661 137.3
A 7 191 16003 111.72 673 661 137.3
A 13 6 13217 91.43 673 661 137.3
B 5 236 5015943 45242.11 579 567 110.9
B 5 172 891140 8033.57 579 567 110.9
B 4 232 77868 697.31 579 567 110.9
C 0 10 327659 2161.25 651 657 151.3
C 15 214 244060 1608.72 651 657 151.3
C 14 67 26935 173.68 651 657 151.3
D 10 118 1386300 9205.95 619 604 150.5
D 8 195 1193355 7924.1 619 604 150.5
D 12 227 478892 3177.53 619 604 150.5

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