ASTROSAT CZTI

Data Quality Report

Orbit 16848

Creation date: 2024-06-27T17:28:34.965113
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/AS1A05_056T01_9000002498_16848cztM0_level2.evt modeM0/AS1A05_056T01_9000002498_16848cztM0_level2_quad_clean.evt
Size (bytes)502,254,72066,185,280
Size479.0 MB 63.1 MB
Events in quadrant A3,397,347397,106
Events in quadrant B3,612,188405,524
Events in quadrant C3,425,285387,889
Events in quadrant D4,353,480378,799

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138343
B0144402
C0140672
D0170782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62201201.929260%
B62201682.700965%
C62201752.813505%
D62203355.385852%

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 7496 6222 0 0 0.00% 0.00%
B 7496 6222 19 19 0.25% 0.31%
C 7496 6222 0 0 0.00% 0.00%
D 7496 6222 175 175 2.33% 2.81%

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 13 228 58185 334.71 864 847 171.3
A 9 143 21054 117.96 864 847 171.3
A 0 226 7490 38.78 864 847 171.3
B 10 16 167427 1040.78 860 840 160.1
B 0 229 60418 372.22 860 840 160.1
B 12 111 19009 113.51 860 840 160.1
C 14 238 130530 676.22 838 846 191.8
C 3 233 24347 122.54 838 846 191.8
C 13 61 5738 25.51 838 846 191.8
D 1 52 1018244 5089.5 833 811 199.9
D 5 222 137305 682.78 833 811 199.9
D 15 145 22112 106.55 833 811 199.9

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