ASTROSAT CZTI

Data Quality Report

Orbit 36263

Creation date: 2022-06-13T15:27:54.306060
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/AS1A10_071T36_9000005182_36263cztM0_level2.evt modeM0/AS1A10_071T36_9000005182_36263cztM0_level2_quad_clean.evt
Size (bytes)418,898,88050,768,640
Size399.5 MB 48.4 MB
Events in quadrant A2,511,758303,984
Events in quadrant B2,854,619311,856
Events in quadrant C2,748,235297,957
Events in quadrant D4,235,770276,002

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104993
B0116222
C0110942
D0159082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4943180.364151%
B4943741.497067%
C4943591.193607%
D49433216.494032%

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 7006 4944 7 7 0.10% 0.14%
B 7006 4944 58 58 0.83% 1.17%
C 7006 4944 53 53 0.76% 1.07%
D 7006 4944 303 303 4.32% 6.13%

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 167244 1402.34 583 570 118.9
A 9 143 69799 582.47 583 570 118.9
A 10 255 16740 136.05 583 570 118.9
B 5 172 320310 2849.57 582 570 112.2
B 5 236 117344 1040.71 582 570 112.2
B 8 128 30310 265.05 582 570 112.2
C 0 10 220583 1665.4 566 570 132.1
C 15 214 206978 1562.41 566 570 132.1
C 0 207 70021 525.71 566 570 132.1
D 12 6 743704 5467.36 548 533 135.9
D 13 249 550872 4048.73 548 533 135.9
D 1 216 338374 2485.43 548 533 135.9

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