ASTROSAT CZTI

Data Quality Report

Orbit 10872

Creation date: 2024-06-27T16:04:58.986475
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/AS1A03_118T01_9000001570_10872cztM0_level2.evt modeM0/AS1A03_118T01_9000001570_10872cztM0_level2_quad_clean.evt
Size (bytes)599,941,44080,881,920
Size572.1 MB 77.1 MB
Events in quadrant A4,585,407521,488
Events in quadrant B4,705,798509,970
Events in quadrant C2,677,461541,370
Events in quadrant D5,787,692450,471

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017983171
B01809380
C01250743
D02124451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60804146.809211%
B609770211.513859%
C6100200.327869%
D6106116119.014085%

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 7081 6117 311 311 4.39% 5.08%
B 7081 6121 464 464 6.55% 7.58%
C 7081 6122 3 3 0.04% 0.05%
D 7081 6120 1035 1035 14.62% 16.91%

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 8 5 1567912 10936.7 692 676 143.3
A 15 223 133384 926.08 692 676 143.3
A 8 15 125976 874.39 692 676 143.3
B 4 239 1966380 14972.77 682 667 131.3
B 0 213 15208 110.76 682 667 131.3
B 11 51 14490 105.29 682 667 131.3
C 14 234 13851 83.85 681 683 157.0
C 13 61 5105 28.16 681 683 157.0
C 0 207 4573 24.77 681 683 157.0
D 1 52 2761638 18605.81 604 584 148.4
D 8 195 263354 1770.72 604 584 148.4
D 2 14 141134 947.12 604 584 148.4

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