ASTROSAT CZTI

Data Quality Report

Orbit 36319

Creation date: 2022-06-17T01:19:23.585947
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_9000005188_36319cztM0_level2.evt modeM0/AS1A11_089T02_9000005188_36319cztM0_level2_quad_clean.evt
Size (bytes)467,303,04068,906,880
Size445.7 MB 65.7 MB
Events in quadrant A2,592,406462,701
Events in quadrant B4,792,413418,257
Events in quadrant C2,898,544431,435
Events in quadrant D3,528,375422,049

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107583
B0175862
C0115622
D0137042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5012120.239425%
B501263212.609737%
C50121402.793296%
D50121653.292099%

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 7134 5013 1 1 0.01% 0.02%
B 7134 5013 538 538 7.54% 10.73%
C 7134 5013 123 123 1.72% 2.45%
D 7134 5013 198 198 2.78% 3.95%

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 188352 1536.9 614 606 122.2
A 9 143 9894 76.03 614 606 122.2
A 13 6 9362 71.68 614 606 122.2
B 4 171 832673 7657.84 575 563 108.7
B 5 172 784739 7216.7 575 563 108.7
B 5 236 551687 5071.95 575 563 108.7
C 0 10 323730 2415.32 575 581 133.8
C 15 214 210922 1572.16 575 581 133.8
C 0 207 118297 879.85 575 581 133.8
D 12 6 763535 5359.24 579 564 142.4
D 12 233 191777 1343.11 579 564 142.4
D 2 250 89193 622.54 579 564 142.4

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