ASTROSAT CZTI

Data Quality Report

Orbit 08371

Creation date: 2024-06-27T15:31:46.449443
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/AS1A03_036T01_9000001164_08371cztM0_level2.evt modeM0/AS1A03_036T01_9000001164_08371cztM0_level2_quad_clean.evt
Size (bytes)466,879,680101,920,320
Size445.3 MB 97.2 MB
Events in quadrant A3,271,280651,753
Events in quadrant B3,471,834664,579
Events in quadrant C3,321,850643,925
Events in quadrant D3,580,775620,691

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148992
B0152121
C0150901
D0155811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7268570.784260%
B7268620.853054%
C7268440.605394%
D7268731.004403%

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 7453 7269 0 0 0.00% 0.00%
B 7453 7269 1 1 0.01% 0.01%
C 7453 7269 8 8 0.11% 0.11%
D 7453 7269 21 21 0.28% 0.29%

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 0 226 8039 41.27 847 826 174.8
A 12 194 7583 38.66 847 826 174.8
A 14 111 7231 36.65 847 826 174.8
B 0 214 65343 393.48 853 831 164.0
B 10 16 20845 122.07 853 831 164.0
B 4 81 20014 117.0 853 831 164.0
C 1 16 93202 482.35 826 830 191.5
C 13 61 6393 29.05 826 830 191.5
C 12 4 6263 28.37 826 830 191.5
D 8 195 108251 526.98 828 801 203.9
D 1 52 90735 441.07 828 801 203.9
D 7 71 77599 376.65 828 801 203.9

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