ASTROSAT CZTI

Data Quality Report

Orbit 11843

Creation date: 2024-06-27T16:19:02.877946
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/AS1A04_088T03_9000001750_11843cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11843cztM0_level2_quad_clean.evt
Size (bytes)455,765,76085,996,800
Size434.7 MB 82.0 MB
Events in quadrant A3,237,242547,956
Events in quadrant B4,161,095544,549
Events in quadrant C2,886,683537,539
Events in quadrant D3,072,081516,841

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138382
B0166541
C0133691
D0138651

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65601342.042683%
B65603164.817073%
C6560530.807927%
D6560891.356707%

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 6990 6561 1 1 0.01% 0.02%
B 6991 6562 102 102 1.46% 1.55%
C 6991 6562 0 0 0.00% 0.00%
D 6991 6562 9 9 0.13% 0.14%

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 1 162 92042 583.03 771 754 156.6
A 1 178 49019 308.26 771 754 156.6
A 1 161 42163 264.47 771 754 156.6
B 4 239 518896 3553.48 757 739 145.8
B 15 204 419463 2871.57 757 739 145.8
B 3 64 175622 1199.33 757 739 145.8
C 13 61 5442 27.26 739 741 172.4
C 14 234 2377 9.49 739 741 172.4
C 14 238 2091 7.83 739 741 172.4
D 1 52 85223 479.78 739 718 176.1
D 13 104 67039 376.54 739 718 176.1
D 9 85 51021 285.6 739 718 176.1

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