ASTROSAT CZTI

Data Quality Report

Orbit 11997

Creation date: 2024-06-27T16:21:03.231397
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_082T01_9000001772_11997cztM0_level2.evt modeM0/AS1A04_082T01_9000001772_11997cztM0_level2_quad_clean.evt
Size (bytes)169,853,76040,821,120
Size162.0 MB 38.9 MB
Events in quadrant A1,125,851278,323
Events in quadrant B1,425,562275,871
Events in quadrant C910,293271,993
Events in quadrant D1,536,873256,989

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047001
B056200
C042220
D060500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2106210.997151%
B2106934.415954%
C210620.094967%
D2106502.374169%

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 2108 2108 2 2 0.09% 0.09%
B 2108 2108 63 63 2.99% 2.99%
C 2108 2108 0 0 0.00% 0.00%
D 2108 2108 53 53 2.51% 2.51%

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 1 162 66449 1264.35 249 245 52.4
A 1 178 34333 651.01 249 245 52.4
A 1 161 30693 581.49 249 245 52.4
B 4 239 275653 5696.57 245 240 48.3
B 11 51 68067 1402.92 245 240 48.3
B 15 204 46427 955.32 245 240 48.3
C 1 16 3858 66.02 232 233 54.9
C 13 61 1718 27.05 232 233 54.9
C 14 234 568 6.1 232 233 54.9
D 1 52 311671 5464.65 231 225 57.0
D 13 104 265792 4659.66 231 225 57.0
D 8 195 35831 624.75 231 225 57.0

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