ASTROSAT CZTI

Data Quality Report

Orbit 41347

Creation date: 2024-06-27T22:27:57.817424
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/AS1T05_105T01_9000005658_41347cztM0_level2.fits modeM0/AS1T05_105T01_9000005658_41347cztM0_level2_quad_clean.evt
Size (bytes)348,923,52082,650,240
Size332.8 MB 78.8 MB
Events in quadrant A2,647,207576,038
Events in quadrant B2,694,093577,905
Events in quadrant C2,952,949536,908
Events in quadrant D4,224,241454,418

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01050
B01060
C01051
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01085176
B011662181
C012101166
D016390186

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A510450.097962%
B50991282.510296%
C50971873.668825%
D508765812.934932%

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 7062 5138 2 2 0.03% 0.04%
B 7062 5121 115 115 1.63% 2.25%
C 7062 5126 185 185 2.62% 3.61%
D 7062 5123 601 601 8.51% 11.73%

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 454161 3901.07 565 554 116.3
A 13 6 8167 65.47 565 554 116.3
A 3 137 6410 50.36 565 554 116.3
B 15 35 283486 2598.94 552 537 108.9
B 5 255 126751 1159.3 552 537 108.9
B 0 190 105994 968.64 552 537 108.9
C 0 10 537794 4279.87 533 536 125.5
C 15 214 217237 1726.27 533 536 125.5
C 7 220 79065 625.57 533 536 125.5
D 13 249 1053933 8238.6 510 494 127.9
D 1 47 638801 4991.99 510 494 127.9
D 5 222 318337 2485.75 510 494 127.9

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