ASTROSAT CZTI

Data Quality Report

Orbit 20220626_A11_049T02_9000005206_level2

Creation date: 2022-06-30T11:54:08.853546
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/AS1A11_049T02_9000005206cztM0_level2_bc.evt modeM0/AS1A11_049T02_9000005206cztM0_level2_quad_clean.evt
Size (bytes)1,843,251,840564,212,160
Size1.7 GB 538.1 MB
Events in quadrant A10,681,8683,565,953
Events in quadrant B13,546,6863,497,937
Events in quadrant C12,667,0153,474,199
Events in quadrant D15,717,4083,317,967

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0967120
B01103400
C01020310
D01171310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09620
B09620
C09620
D09620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01610
B01610
C01610
D01610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47108500.106139%
B4710610912.316053%
C471084650.987093%
D4710814193.012227%

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 63204 47118 0 0 0.00% 0.00%
B 63204 47108 70 70 0.11% 0.15%
C 63204 47108 83 83 0.13% 0.18%
D 63204 47108 462 462 0.73% 0.98%

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 1293741 2395.01 2384 2342 539.2
A 13 254 77890 140.11 2384 2342 539.2
A 9 143 52629 93.26 2384 2342 539.2
B 5 172 1836423 3896.39 2348 2295 470.7
B 5 255 962941 2040.78 2348 2295 470.7
B 0 189 525769 1112.06 2348 2295 470.7
C 15 214 1910869 3620.55 2283 2260 527.2
C 0 10 1054015 1995.13 2283 2260 527.2
C 0 207 640563 1210.83 2283 2260 527.2
D 13 249 1322472 2434.42 2299 2234 542.3
D 1 20 920321 1692.88 2299 2234 542.3
D 13 171 632216 1161.64 2299 2234 542.3

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