ASTROSAT CZTI

Data Quality Report

Orbit 49815

Creation date: 2024-12-14T10:48:15.065040
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_037T01_9000006440_49815cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49815cztM0_level2_quad_clean.evt
Size (bytes)1,439,507,52056,793,600
Size1.3 GB 54.2 MB
Events in quadrant A13,664,219327,550
Events in quadrant B4,864,752756,861
Events in quadrant C16,581,45517,332
Events in quadrant D17,589,21788,320

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0457380
B0196980
C0544315
D0573820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7605427456.199869%
B76062883.786484%
C7605744697.909270%
D7605679089.283366%

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 7604 7604 4114 4114 54.10% 54.10%
B 7606 7606 184 184 2.42% 2.42%
C 7604 7604 5487 5487 72.16% 72.16%
D 7604 7604 6309 6309 82.97% 82.97%

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 98 5795842 39325.01 565 548 147.4
A 4 92 1392037 9442.2 565 548 147.4
A 3 99 728051 4936.6 565 548 147.4
B 4 171 467011 2724.15 806 780 171.1
B 10 28 317468 1850.38 806 780 171.1
B 4 206 192362 1119.4 806 780 171.1
C 15 197 3948895 60758.13 194 191 65.0
C 15 147 3505446 53934.84 194 191 65.0
C 1 44 2724241 41914.56 194 191 65.0
D 7 61 2931780 20948.98 450 432 139.9
D 15 185 2424507 17323.74 450 432 139.9
D 7 126 2204622 15752.32 450 432 139.9

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