ASTROSAT CZTI

Data Quality Report

Orbit 14386

Creation date: 2024-06-27T16:54:24.177595
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/AS1G08_075T01_9000002120_14386cztM0_level2.evt modeM0/AS1G08_075T01_9000002120_14386cztM0_level2_quad_clean.evt
Size (bytes)527,670,720104,048,640
Size503.2 MB 99.2 MB
Events in quadrant A3,308,315693,179
Events in quadrant B4,146,668687,360
Events in quadrant C4,043,282669,122
Events in quadrant D4,043,939650,183

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138983
B0166702
C0166102
D0164452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6468550.850340%
B64681442.226345%
C6468310.479283%
D6468991.530612%

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 7784 6470 21 21 0.27% 0.32%
B 7784 6470 81 81 1.04% 1.25%
C 7784 6470 1 1 0.01% 0.02%
D 7784 6470 91 91 1.17% 1.41%

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 8 15 55384 331.06 822 809 164.9
A 4 2 49490 295.3 822 809 164.9
A 15 69 25144 147.62 822 809 164.9
B 10 245 706545 4585.56 819 801 153.9
B 0 229 110062 709.92 819 801 153.9
B 4 173 102362 659.89 819 801 153.9
C 3 233 927084 5107.06 795 800 181.4
C 3 232 9518 48.07 795 800 181.4
C 14 234 6363 30.67 795 800 181.4
D 12 110 803282 3991.16 782 763 201.1
D 2 120 190586 944.04 782 763 201.1
D 10 199 32000 155.35 782 763 201.1

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