ASTROSAT CZTI

Data Quality Report

Orbit 18167

Creation date: 2024-06-27T17:46:18.967754
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/AS1A05_176T05_9000002706_18167cztM0_level2.evt modeM0/AS1A05_176T05_9000002706_18167cztM0_level2_quad_clean.evt
Size (bytes)225,933,12026,219,520
Size215.5 MB 25.0 MB
Events in quadrant A1,404,027153,309
Events in quadrant B1,438,821156,424
Events in quadrant C1,549,137151,803
Events in quadrant D2,274,596148,059

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A056051
B057501
C061031
D085081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25581274.964816%
B25581174.573886%
C25581716.684910%
D25582469.616888%

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 3663 2559 0 0 0.00% 0.00%
B 3663 2559 0 0 0.00% 0.00%
C 3663 2559 24 24 0.66% 0.94%
D 3663 2559 81 81 2.21% 3.17%

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 15 174 21785 289.63 357 348 74.0
A 3 15 4853 60.87 357 348 74.0
A 4 2 4646 58.07 357 348 74.0
B 0 189 38909 547.96 351 341 70.4
B 7 220 15942 221.65 351 341 70.4
B 12 111 8048 109.5 351 341 70.4
C 4 254 170549 2121.82 339 340 80.2
C 14 238 51280 635.02 339 340 80.2
C 13 61 2425 25.99 339 340 80.2
D 7 238 779681 8984.69 346 334 86.7
D 13 168 95065 1092.11 346 334 86.7
D 9 64 60390 692.35 346 334 86.7

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