ASTROSAT CZTI

Data Quality Report

Orbit 36812

Creation date: 2024-06-27T21:31:57.789767
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/AS1A11_075T01_9000005244_36812cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36812cztM0_level2_quad_clean.evt
Size (bytes)566,674,56076,668,480
Size540.4 MB 73.1 MB
Events in quadrant A2,425,838509,324
Events in quadrant B8,920,912461,008
Events in quadrant C2,600,399524,035
Events in quadrant D2,881,864481,974

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103913
B0298722
C0106632
D0120022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A491370.142479%
B4913200940.891512%
C4913310.630979%
D49132114.294728%

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 7067 4914 2 2 0.03% 0.04%
B 7067 4913 1985 1985 28.09% 40.40%
C 7067 4914 24 24 0.34% 0.49%
D 7067 4914 209 209 2.96% 4.25%

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 203880 1821.63 560 551 111.6
A 9 143 22856 199.83 560 551 111.6
A 14 235 12973 111.29 560 551 111.6
B 12 1 6655714 71085.63 494 483 93.6
B 5 172 70026 742.8 494 483 93.6
B 5 255 52515 555.76 494 483 93.6
C 15 214 211177 1652.52 552 557 127.5
C 14 254 108674 848.28 552 557 127.5
C 0 10 86329 672.96 552 557 127.5
D 13 249 555047 4258.36 534 520 130.2
D 2 250 73530 560.66 534 520 130.2
D 13 171 63931 486.95 534 520 130.2

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