ASTROSAT CZTI

Data Quality Report

Orbit 12986

Creation date: 2024-06-27T16:34:47.137367
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/AS1G08_055T01_9000001912_12986cztM0_level2.evt modeM0/AS1G08_055T01_9000001912_12986cztM0_level2_quad_clean.evt
Size (bytes)753,626,88084,551,040
Size718.7 MB 80.6 MB
Events in quadrant A3,719,321542,139
Events in quadrant B9,537,963460,383
Events in quadrant C3,356,091545,452
Events in quadrant D5,723,519510,597

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155633
B0332342
C0148382
D0218712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71911682.336254%
B7191248634.570992%
C71911101.529690%
D71915647.843137%

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 7897 7193 2 2 0.03% 0.03%
B 7897 7193 1678 1678 21.25% 23.33%
C 7897 7193 0 0 0.00% 0.00%
D 7897 7193 419 419 5.31% 5.83%

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 12 189 159428 906.01 874 854 175.0
A 8 15 132405 751.61 874 854 175.0
A 1 162 35537 198.16 874 854 175.0
B 0 85 5596235 38758.27 765 744 144.4
B 3 64 525518 3634.95 765 744 144.4
B 4 239 283921 1961.48 765 744 144.4
C 13 61 6087 26.42 860 866 197.6
C 14 234 2995 10.77 860 866 197.6
C 12 4 2511 8.32 860 866 197.6
D 1 52 2519414 12644.68 838 815 199.2
D 2 234 30172 147.39 838 815 199.2
D 8 195 19669 94.66 838 815 199.2

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