ASTROSAT CZTI

Data Quality Report

Orbit 35408

Creation date: 2022-09-12T18:51:02.501299
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/AS1T05_022T01_9000005070_35408cztM0_level2.evt modeM0/AS1T05_022T01_9000005070_35408cztM0_level2_quad_clean.evt
Size (bytes)704,197,44058,665,600
Size671.6 MB 55.9 MB
Events in quadrant A2,555,048396,691
Events in quadrant B10,299,207281,800
Events in quadrant C3,325,907392,500
Events in quadrant D4,809,894355,232

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104433
B0339482
C0127882
D0176932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4976100.200965%
B4976371274.598071%
C49761232.471865%
D497673314.730707%

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 7098 4977 1 1 0.01% 0.02%
B 7098 4977 3145 3145 44.31% 63.19%
C 7098 4977 98 98 1.38% 1.97%
D 7097 4976 589 589 8.30% 11.84%

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 125157 1009.89 614 603 123.3
A 9 143 18314 143.6 614 603 123.3
A 7 3 18137 142.17 614 603 123.3
B 4 251 7410025 97457.56 400 389 76.0
B 5 236 1000655 13156.31 400 389 76.0
B 5 172 91578 1199.39 400 389 76.0
C 0 10 748546 5398.06 597 603 138.6
C 15 214 208904 1503.35 597 603 138.6
C 3 233 35180 249.55 597 603 138.6
D 7 80 1653343 12112.32 560 545 136.5
D 12 233 357394 2615.12 560 545 136.5
D 8 195 307105 2246.59 560 545 136.5

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