ASTROSAT CZTI

Data Quality Report

Orbit 27156

Creation date: 2024-06-27T19:37:05.623279
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_245T01_9000003916_27156cztM0_level2.evt modeM0/AS1T03_245T01_9000003916_27156cztM0_level2_quad_clean.evt
Size (bytes)556,133,76095,757,120
Size530.4 MB 91.3 MB
Events in quadrant A3,407,160632,811
Events in quadrant B3,895,635642,730
Events in quadrant C3,222,989613,488
Events in quadrant D5,887,289568,314

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140540
B0155260
C0134430
D0218650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6338500.788892%
B63381732.729568%
C6338771.214894%
D63383805.995582%

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 7613 6339 5 5 0.07% 0.08%
B 7613 6339 37 37 0.49% 0.58%
C 7613 6339 3 3 0.04% 0.05%
D 7613 6339 383 383 5.03% 6.04%

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 13 180914 1091.74 825 810 165.0
A 14 235 30670 181.0 825 810 165.0
A 8 192 14017 80.06 825 810 165.0
B 15 33 315772 2032.41 826 807 155.0
B 3 112 175370 1126.42 826 807 155.0
B 5 172 45720 289.81 826 807 155.0
C 14 238 126569 680.13 788 793 184.9
C 15 208 18377 95.09 788 793 184.9
C 13 61 5410 24.97 788 793 184.9
D 1 52 2018857 9974.95 764 750 202.3
D 7 38 498116 2458.34 764 750 202.3
D 2 250 188751 929.24 764 750 202.3

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