ASTROSAT CZTI

Data Quality Report

Orbit 23158

Creation date: 2024-06-27T18:50:39.806768
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/AS1A08_009T01_9000003422_23158cztM0_level2.evt modeM0/AS1A08_009T01_9000003422_23158cztM0_level2_quad_clean.evt
Size (bytes)487,563,84089,032,320
Size465.0 MB 84.9 MB
Events in quadrant A3,272,827569,321
Events in quadrant B3,359,844578,860
Events in quadrant C3,808,734562,273
Events in quadrant D3,902,227551,536

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139412
B0141502
C0154363
D0159802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6224631.012211%
B6224771.237147%
C62232253.615619%
D62231842.956773%

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 7529 6224 0 0 0.00% 0.00%
B 7529 6224 5 5 0.07% 0.08%
C 7528 6223 25 25 0.33% 0.40%
D 7528 6224 102 102 1.35% 1.64%

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 4 2 10173 55.91 845 830 167.1
A 13 254 9421 51.41 845 830 167.1
A 6 16 7428 39.49 845 830 167.1
B 0 190 21344 129.82 846 829 158.0
B 0 228 19232 116.45 846 829 158.0
B 12 111 17428 105.04 846 829 158.0
C 8 208 270259 1437.94 821 829 187.4
C 0 10 133294 706.96 821 829 187.4
C 14 238 132696 703.77 821 829 187.4
D 1 52 396285 1972.47 829 808 200.5
D 12 233 130917 648.93 829 808 200.5
D 7 38 71883 354.49 829 808 200.5

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