ASTROSAT CZTI

Data Quality Report

Orbit 27901

Creation date: 2024-06-27T19:45:46.989281
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/AS1A10_048T06_9000004030_27901cztM0_level2.evt modeM0/AS1A10_048T06_9000004030_27901cztM0_level2_quad_clean.evt
Size (bytes)1,000,028,160135,192,960
Size953.7 MB 128.9 MB
Events in quadrant A5,990,086847,190
Events in quadrant B5,968,361854,209
Events in quadrant C5,969,674814,225
Events in quadrant D11,520,193721,644

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259410
B0255480
C0255840
D0424390

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12395970.782574%
B123961110.895450%
C123961661.339142%
D12396159412.858987%

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 13710 12396 2 2 0.01% 0.02%
B 13711 12396 0 0 0.00% 0.00%
C 13711 12396 1 1 0.01% 0.01%
D 13711 12396 1321 1321 9.63% 10.66%

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 6 16 226249 753.14 1487 1455 298.5
A 13 254 18027 55.52 1487 1455 298.5
A 3 137 14655 44.22 1487 1455 298.5
B 0 230 69046 236.45 1480 1438 285.9
B 10 245 43702 147.81 1480 1438 285.9
B 12 111 35910 120.56 1480 1438 285.9
C 14 238 229991 687.28 1423 1431 332.6
C 2 16 97408 288.6 1423 1431 332.6
C 10 1 48434 141.34 1423 1431 332.6
D 1 52 4346437 13601.38 1331 1294 319.5
D 8 195 1735122 5427.31 1331 1294 319.5
D 2 250 183931 571.7 1331 1294 319.5

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