ASTROSAT CZTI

Data Quality Report

Orbit 16778

Creation date: 2024-06-27T17:27:38.385138
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_004T02_9000002490_16778cztM0_level2.evt modeM0/AS1A05_004T02_9000002490_16778cztM0_level2_quad_clean.evt
Size (bytes)792,889,92084,306,240
Size756.2 MB 80.4 MB
Events in quadrant A3,257,422634,901
Events in quadrant B3,366,974633,900
Events in quadrant C3,919,851607,470
Events in quadrant D13,041,267234,495

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136132
B0138921
C0157491
D0430801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63041041.649746%
B63041021.618020%
C63041702.696701%
D6304500179.330584%

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 7245 6306 17 17 0.23% 0.27%
B 7245 6306 5 5 0.07% 0.08%
C 7245 6306 6 6 0.08% 0.10%
D 7244 6304 3672 3672 50.69% 58.25%

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 15 174 209818 1310.95 788 771 159.5
A 0 13 18593 111.76 788 771 159.5
A 0 226 7091 39.63 788 771 159.5
B 15 35 212730 1435.56 778 759 147.7
B 0 229 34130 226.0 778 759 147.7
B 3 209 33473 221.55 778 759 147.7
C 3 233 784219 4446.54 753 757 176.2
C 14 238 115701 652.36 753 757 176.2
C 0 207 83930 472.05 753 757 176.2
D 1 52 11476236 129500.66 369 358 88.6
D 12 110 52094 583.82 369 358 88.6
D 11 176 43888 491.22 369 358 88.6

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