ASTROSAT CZTI

Data Quality Report

Orbit 18617

Creation date: 2024-06-27T17:52:30.467714
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_212T06_9000002776_18617cztM0_level2.evt modeM0/AS1A05_212T06_9000002776_18617cztM0_level2_quad_clean.evt
Size (bytes)233,432,64067,043,520
Size222.6 MB 63.9 MB
Events in quadrant A1,686,342447,147
Events in quadrant B1,659,282461,569
Events in quadrant C1,626,638444,164
Events in quadrant D1,854,882426,681

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075181
B073381
C072011
D080491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3542180.508187%
B3542140.395257%
C3542230.649351%
D3542431.214003%

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 3542 3542 2 2 0.06% 0.06%
B 3542 3542 1 1 0.03% 0.03%
C 3542 3542 0 0 0.00% 0.00%
D 3542 3542 26 26 0.73% 0.73%

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 0 13 98889 1188.67 404 396 82.9
A 9 143 26576 315.95 404 396 82.9
A 13 254 6599 74.86 404 396 82.9
B 0 230 25343 314.84 411 402 79.2
B 0 229 11578 141.08 411 402 79.2
B 12 111 9372 113.23 411 402 79.2
C 14 238 61800 652.45 396 400 94.1
C 3 233 16906 175.4 396 400 94.1
C 13 61 2698 24.42 396 400 94.1
D 1 52 293462 3052.92 393 380 96.0
D 5 222 25527 261.95 393 380 96.0
D 2 120 21117 216.01 393 380 96.0

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