ASTROSAT CZTI

Data Quality Report

Orbit 36530

Creation date: 2024-06-27T21:28:00.199776
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_089T02_9000005216_36530cztM0_level2.evt modeM0/AS1A11_089T02_9000005216_36530cztM0_level2_quad_clean.evt
Size (bytes)1,164,202,560164,174,400
Size1.1 GB 156.6 MB
Events in quadrant A7,481,8891,007,569
Events in quadrant B8,180,8931,000,080
Events in quadrant C8,653,039974,593
Events in quadrant D9,900,308925,116

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319555
B0343894
C0351784
D0401554

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15426210.136134%
B154261440.933489%
C154262511.627123%
D154265053.273694%

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 19696 15429 2 2 0.01% 0.01%
B 19696 15429 70 70 0.36% 0.45%
C 19696 15429 186 186 0.94% 1.21%
D 19696 15429 390 390 1.98% 2.53%

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 492494 1377.67 1777 1739 356.2
A 7 3 52464 142.4 1777 1739 356.2
A 9 143 31620 83.88 1777 1739 356.2
B 5 255 350035 1044.73 1755 1705 333.4
B 5 172 320657 956.61 1755 1705 333.4
B 0 189 238118 709.06 1755 1705 333.4
C 15 214 651714 1643.49 1702 1710 395.5
C 0 10 640010 1613.89 1702 1710 395.5
C 14 254 588735 1484.25 1702 1710 395.5
D 13 249 773445 1863.87 1697 1653 414.1
D 2 153 445267 1071.32 1697 1653 414.1
D 2 250 410631 987.68 1697 1653 414.1

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