ASTROSAT CZTI

Data Quality Report

Orbit 15496

Creation date: 2024-06-27T17:09:19.967771
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/AS1G08_039T01_9000002292_15496cztM0_level2.evt modeM0/AS1G08_039T01_9000002292_15496cztM0_level2_quad_clean.evt
Size (bytes)549,432,00091,831,680
Size524.0 MB 87.6 MB
Events in quadrant A3,994,745569,895
Events in quadrant B3,832,335580,567
Events in quadrant C3,790,840558,614
Events in quadrant D4,507,087544,188

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167483
B0162002
C0157222
D0185112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75831421.872610%
B7583540.712119%
C7583590.778056%
D75831872.466042%

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 9229 7586 72 72 0.78% 0.95%
B 9229 7586 5 5 0.05% 0.07%
C 9229 7586 1 1 0.01% 0.01%
D 9229 7586 146 146 1.58% 1.92%

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 14 238 402081 2169.25 905 886 184.9
A 14 237 51893 275.79 905 886 184.9
A 0 253 45411 240.75 905 886 184.9
B 4 142 86492 485.03 915 891 176.5
B 0 189 59322 331.08 915 891 176.5
B 0 229 24929 136.2 915 891 176.5
C 3 233 240229 1169.51 870 876 204.7
C 14 238 133302 647.05 870 876 204.7
C 10 22 7908 34.36 870 876 204.7
D 10 70 292666 1367.44 873 846 213.4
D 5 222 248740 1161.61 873 846 213.4
D 1 52 242462 1132.19 873 846 213.4

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