ASTROSAT CZTI

Data Quality Report

Orbit 15797

Creation date: 2024-06-27T17:13:33.085073
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/AS1A04_100T01_9000002336_15797cztM0_level2.evt modeM0/AS1A04_100T01_9000002336_15797cztM0_level2_quad_clean.evt
Size (bytes)265,668,48040,354,560
Size253.4 MB 38.5 MB
Events in quadrant A2,019,238231,443
Events in quadrant B2,139,134237,747
Events in quadrant C1,814,044235,448
Events in quadrant D1,796,248230,938

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088470
B090110
C081650
D083890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4057862.119793%
B4057260.640868%
C405770.172541%
D4057120.295785%

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 4058 4058 69 69 1.70% 1.70%
B 4058 4058 13 13 0.32% 0.32%
C 4058 4058 1 1 0.02% 0.02%
D 4058 4058 9 9 0.22% 0.22%

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 15 239 261958 2785.32 454 443 93.9
A 0 226 4136 39.33 454 443 93.9
A 14 254 3757 35.3 454 443 93.9
B 0 85 89450 1000.92 455 443 88.9
B 7 220 69904 781.12 455 443 88.9
B 10 245 39308 437.05 455 443 88.9
C 14 238 67841 654.48 438 441 103.0
C 7 247 20874 198.41 438 441 103.0
C 10 22 8765 80.83 438 441 103.0
D 7 55 78773 673.71 444 432 116.3
D 2 234 18078 151.75 444 432 116.3
D 13 172 6663 53.58 444 432 116.3

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