ASTROSAT CZTI

Data Quality Report

Orbit 43465

Creation date: 2024-06-27T22:52:17.720497
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/AS1A12_018T01_9000005874_43465cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43465cztM0_level2_quad_clean.evt
Size (bytes)408,525,12094,196,160
Size389.6 MB 89.8 MB
Events in quadrant A5,744,066609,612
Events in quadrant B2,948,300651,062
Events in quadrant C2,718,164614,524
Events in quadrant D3,252,541563,802

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208402
B0127162
C0119432
D0137462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A590194916.082020%
B5901170.288087%
C5902110.186377%
D5901711.203186%

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 7215 5902 922 922 12.78% 15.62%
B 7215 5902 10 10 0.14% 0.17%
C 7216 5903 8 8 0.11% 0.14%
D 7215 5902 68 68 0.94% 1.15%

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 15 237 2574007 20752.45 599 586 124.0
A 10 83 567223 4569.44 599 586 124.0
A 15 222 261538 2104.36 599 586 124.0
B 0 245 176304 1460.38 627 609 120.3
B 0 199 140422 1162.13 627 609 120.3
B 0 189 107193 885.93 627 609 120.3
C 15 214 262262 1826.71 612 613 143.2
C 3 233 33656 230.69 612 613 143.2
C 2 16 25665 174.9 612 613 143.2
D 2 16 268802 1785.9 610 593 150.2
D 1 52 253843 1686.29 610 593 150.2
D 13 249 162632 1078.95 610 593 150.2

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