ASTROSAT CZTI

Data Quality Report

Orbit 24535

Creation date: 2024-06-27T19:07:01.230974
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/AS1T03_183T01_9000003606_24535cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24535cztM0_level2_quad_clean.evt
Size (bytes)584,311,680131,590,080
Size557.2 MB 125.5 MB
Events in quadrant A3,251,183941,609
Events in quadrant B4,357,916940,893
Events in quadrant C3,268,585884,664
Events in quadrant D6,392,845779,770

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136502
B0169732
C0135502
D0235223

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6281500.796052%
B62813285.222098%
C6281741.178156%
D628074311.831210%

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 7636 6282 3 3 0.04% 0.05%
B 7636 6282 167 167 2.19% 2.66%
C 7636 6282 0 0 0.00% 0.00%
D 7635 6281 655 655 8.58% 10.43%

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 4 2 27566 161.4 836 822 165.7
A 13 254 10058 55.74 836 822 165.7
A 0 226 7075 37.74 836 822 165.7
B 3 64 1026328 6750.79 823 807 151.9
B 5 172 79380 517.23 823 807 151.9
B 0 197 29360 187.96 823 807 151.9
C 14 238 129404 721.77 782 790 178.2
C 2 16 80551 447.61 782 790 178.2
C 13 61 5496 26.41 782 790 178.2
D 1 52 3139676 17645.57 734 714 177.9
D 12 218 394628 2214.37 734 714 177.9
D 8 195 31085 170.73 734 714 177.9

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