ASTROSAT CZTI

Data Quality Report

Orbit 36463

Creation date: 2022-07-11T12:20:54.151774
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/AS1A09_014T01_9000005204_36463cztM0_level2.evt modeM0/AS1A09_014T01_9000005204_36463cztM0_level2_quad_clean.evt
Size (bytes)430,614,72092,928,960
Size410.7 MB 88.6 MB
Events in quadrant A2,807,267631,140
Events in quadrant B3,350,625617,582
Events in quadrant C3,046,656614,920
Events in quadrant D3,476,970579,835

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115063
B0133282
C0119532
D0136272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5297140.264301%
B52971092.057769%
C5297961.812347%
D52971803.398150%

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 7360 5298 0 0 0.00% 0.00%
B 7360 5298 74 74 1.01% 1.40%
C 7360 5298 61 61 0.83% 1.15%
D 7360 5298 138 138 1.88% 2.60%

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 10 83 196660 1487.01 666 656 131.8
A 13 6 16345 119.03 666 656 131.8
A 13 254 9908 70.19 666 656 131.8
B 5 172 286296 2385.52 647 632 119.7
B 15 85 170505 1418.57 647 632 119.7
B 5 255 114615 951.85 647 632 119.7
C 0 10 292126 2008.81 637 643 145.1
C 15 214 248626 1709.02 637 643 145.1
C 10 49 11575 75.34 637 643 145.1
D 13 249 413977 2710.63 636 619 152.5
D 12 128 125846 821.19 636 619 152.5
D 12 6 93317 607.88 636 619 152.5

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