ASTROSAT CZTI

Data Quality Report

Orbit 34354

Creation date: 2022-02-04T08:31:07.656095
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/AS1A05_019T01_9000004906_34354cztM0_level2.evt modeM0/AS1A05_019T01_9000004906_34354cztM0_level2_quad_clean.evt
Size (bytes)777,807,36061,649,280
Size741.8 MB 58.8 MB
Events in quadrant A2,861,921389,045
Events in quadrant B3,935,176384,253
Events in quadrant C3,574,865383,726
Events in quadrant D12,763,463274,724

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126093
B0158162
C0143022
D0420802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6223100.160694%
B62232544.081633%
C6223711.140929%
D6223398263.988430%

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 9388 6225 2 2 0.02% 0.03%
B 9388 6225 157 157 1.67% 2.52%
C 9388 6225 49 49 0.52% 0.79%
D 9387 6223 3748 3748 39.93% 60.23%

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 10 83 32045 216.76 722 704 144.6
A 9 143 20529 137.11 722 704 144.6
A 13 6 16015 105.89 722 704 144.6
B 5 172 451017 3253.25 709 689 138.4
B 5 200 247551 1783.38 709 689 138.4
B 0 219 157442 1132.41 709 689 138.4
C 15 214 260392 1583.28 704 709 164.0
C 3 233 229189 1393.03 704 709 164.0
C 14 254 107858 653.28 704 709 164.0
D 7 223 8823487 77702.41 457 443 113.5
D 8 195 994747 8756.59 457 443 113.5
D 12 235 603740 5313.09 457 443 113.5

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