ASTROSAT CZTI

Data Quality Report

Orbit 46912

Creation date: 2024-06-27T23:29:21.071912
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_053T01_9000006282_46912cztM0_level2.fits modeM0/AS1A13_053T01_9000006282_46912cztM0_level2_quad_clean.evt
Size (bytes)605,505,600105,583,680
Size577.5 MB 100.7 MB
Events in quadrant A6,477,975719,173
Events in quadrant B6,588,264678,888
Events in quadrant C2,906,123717,383
Events in quadrant D5,918,111609,955

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235701
B0242561
C0138022
D0222491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67592894.275780%
B676084912.559172%
C6759420.621394%
D675975611.185087%

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 7569 6759 10 10 0.13% 0.15%
B 7570 6760 362 362 4.78% 5.36%
C 7569 6760 0 0 0.00% 0.00%
D 7569 6760 656 656 8.67% 9.70%

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 3525404 22719.49 752 735 155.1
A 7 3 28021 175.88 752 735 155.1
A 13 254 9479 56.36 752 735 155.1
B 3 112 3499860 24371.9 724 702 143.6
B 0 200 51495 353.78 724 702 143.6
B 5 32 51019 350.46 724 702 143.6
C 0 207 7076 36.15 741 743 175.2
C 3 233 7044 35.96 741 743 175.2
C 13 61 4967 24.11 741 743 175.2
D 1 52 1834728 10255.67 712 689 178.8
D 12 0 383165 2138.75 712 689 178.8
D 7 96 343748 1918.33 712 689 178.8

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