ASTROSAT CZTI

Data Quality Report

Orbit 48515

Creation date: 2024-09-21T12:02:14.867651
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/AS1A13_037T05_9000006434_48515cztM0_level2.fits modeM0/AS1A13_037T05_9000006434_48515cztM0_level2_quad_clean.evt
Size (bytes)503,015,040104,852,160
Size479.7 MB 100.0 MB
Events in quadrant A6,997,160682,280
Events in quadrant B3,589,008706,694
Events in quadrant C2,775,672698,320
Events in quadrant D4,736,193618,201

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252052
B0156731
C0136081
D0189411

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67332663.950691%
B67332033.015001%
C673390.133670%
D67332263.356602%

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 7713 6734 131 131 1.70% 1.95%
B 7712 6733 114 114 1.48% 1.69%
C 7712 6733 0 0 0.00% 0.00%
D 7713 6734 221 221 2.87% 3.28%

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 4196874 28517.74 701 686 147.1
A 12 189 37463 249.94 701 686 147.1
A 0 31 23444 154.67 701 686 147.1
B 5 255 491259 3522.99 702 678 139.3
B 0 186 152929 1093.36 702 678 139.3
B 12 16 76634 545.46 702 678 139.3
C 3 233 14146 80.4 704 704 167.2
C 14 67 6721 35.99 704 704 167.2
C 12 250 5041 25.94 704 704 167.2
D 2 165 1340293 7748.27 688 665 172.9
D 2 249 450291 2600.59 688 665 172.9
D 12 233 192969 1112.27 688 665 172.9

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