ASTROSAT CZTI

Data Quality Report

Orbit 04102

Creation date: 2024-06-27T14:37:27.223471
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/AS1G05_191T01_9000000524_04102cztM0_level2.evt modeM0/AS1G05_191T01_9000000524_04102cztM0_level2_quad_clean.evt
Size (bytes)314,438,40055,938,240
Size299.9 MB 53.3 MB
Events in quadrant A2,321,685341,027
Events in quadrant B2,458,427340,164
Events in quadrant C2,212,001336,694
Events in quadrant D2,189,183324,694

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101894
B0106203
C0101091
D0103121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5005100.199800%
B5005180.359640%
C500630.059928%
D5006120.239712%

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 5006 5006 1 1 0.02% 0.02%
B 5006 5006 8 8 0.16% 0.16%
C 5006 5006 0 0 0.00% 0.00%
D 5006 5006 13 13 0.26% 0.26%

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 0 199 72131 599.95 574 563 119.3
A 8 15 15306 123.59 574 563 119.3
A 0 50 13607 109.35 574 563 119.3
B 14 167 85531 758.02 579 566 112.1
B 10 16 51798 457.07 579 566 112.1
B 15 204 42479 373.93 579 566 112.1
C 8 128 21445 158.88 556 560 131.5
C 8 144 8279 58.72 556 560 131.5
C 8 112 7580 53.4 556 560 131.5
D 13 239 45212 329.02 554 538 135.8
D 10 172 35090 254.47 554 538 135.8
D 2 14 14169 100.39 554 538 135.8

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