ASTROSAT CZTI

Data Quality Report

Orbit 34218

Creation date: 2022-01-26T03:19:39.949499
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_086T01_9000004884_34218cztM0_level2.evt modeM0/AS1T04_086T01_9000004884_34218cztM0_level2_quad_clean.evt
Size (bytes)588,841,92061,364,160
Size561.6 MB 58.5 MB
Events in quadrant A2,443,035398,346
Events in quadrant B4,726,404393,198
Events in quadrant C3,861,842383,153
Events in quadrant D6,459,382327,478

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103953
B0174762
C0145912
D0227272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A507050.098619%
B507051810.216963%
C50703677.238659%
D507097019.132150%

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 7044 5071 0 0 0.00% 0.00%
B 7044 5071 415 415 5.89% 8.18%
C 7044 5071 234 234 3.32% 4.61%
D 7044 5070 807 807 11.46% 15.92%

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 23345 182.5 617 604 124.6
A 13 6 18175 141.01 617 604 124.6
A 9 143 15148 116.72 617 604 124.6
B 5 31 965510 8517.63 604 590 113.3
B 5 172 690756 6092.3 604 590 113.3
B 5 15 291696 2569.68 604 590 113.3
C 14 254 884948 6495.25 598 606 136.2
C 15 214 216298 1584.2 598 606 136.2
C 0 10 177867 1301.93 598 606 136.2
D 2 250 1828660 13442.27 555 540 136.0
D 10 118 961387 7065.16 555 540 136.0
D 8 195 656211 4821.18 555 540 136.0

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