ASTROSAT CZTI

Data Quality Report

Orbit 00555

Creation date: 2024-06-27T13:59:42.716537
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/AS1P01_015T03_9000000076_00555cztM0_level2.evt modeM0/AS1P01_015T03_9000000076_00555cztM0_level2_quad_clean.evt
Size (bytes)74,664,0005,290,560
Size71.2 MB 5.0 MB
Events in quadrant A465,74832,452
Events in quadrant B473,56131,014
Events in quadrant C469,96731,145
Events in quadrant D823,85731,063

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016511
B016820
C016620
D027020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A36810.271739%
B36800.000000%
C36800.000000%
D368277.336957%

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 368 368 9 9 2.45% 2.45%
B 368 368 12 12 3.26% 3.26%
C 368 368 5 5 1.36% 1.36%
D 368 368 245 245 66.58% 66.58%

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 79 4817 164.2 118 117 28.6
A 0 238 2500 83.25 118 117 28.6
A 0 69 776 23.02 118 117 28.6
B 8 4 27086 937.55 113 113 28.8
B 5 46 6970 238.34 113 113 28.8
B 5 2 2315 76.54 113 113 28.8
C 1 1 33688 1021.71 110 113 32.9
C 10 70 2551 74.19 110 113 32.9
C 15 241 900 23.95 110 113 32.9
D 2 33 206947 5779.99 108 110 35.8
D 1 239 102282 2855.16 108 110 35.8
D 1 4 68820 1920.07 108 110 35.8

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