ASTROSAT CZTI

Data Quality Report

Orbit 36146

Creation date: 2022-08-10T20:38:17.000759
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/AS1T04_069T01_9000005158_36146cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36146cztM0_level2_quad_clean.evt
Size (bytes)375,681,60047,295,360
Size358.3 MB 45.1 MB
Events in quadrant A2,455,069279,768
Events in quadrant B2,776,553285,231
Events in quadrant C2,743,465274,210
Events in quadrant D3,076,363255,761

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 6949 4797 4 4 0.06% 0.08%
B 6949 4797 24 24 0.35% 0.50%
C 6949 4797 62 62 0.89% 1.29%
D 6949 4797 119 119 1.71% 2.48%

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 160465 1354.59 582 573 118.0
A 9 143 25049 207.36 582 573 118.0
A 8 144 13189 106.88 582 573 118.0
B 5 172 293582 2629.78 582 568 111.4
B 0 190 62095 552.2 582 568 111.4
B 0 213 54920 487.81 582 568 111.4
C 0 10 253842 1923.38 566 570 131.7
C 15 214 202651 1534.63 566 570 131.7
C 1 23 54153 406.92 566 570 131.7
D 1 52 438607 3174.48 557 542 138.0
D 13 249 173905 1256.29 557 542 138.0
D 12 6 73860 531.31 557 542 138.0

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