ASTROSAT CZTI

Data Quality Report

Orbit 31546

Creation date: 2024-06-27T20:29:48.236367
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_056T01_9000004598_31546cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31546cztM0_level2_quad_clean.evt
Size (bytes)578,989,44097,246,080
Size552.2 MB 92.7 MB
Events in quadrant A3,476,982617,220
Events in quadrant B5,620,954618,273
Events in quadrant C3,586,396597,835
Events in quadrant D4,338,353585,800

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154372
B0227581
C0155851
D0179501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75561542.038115%
B75562313.057173%
C75561782.355744%
D75572763.652243%

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 7736 7556 0 0 0.00% 0.00%
B 7736 7556 1 1 0.01% 0.01%
C 7736 7556 1 1 0.01% 0.01%
D 7737 7558 160 160 2.07% 2.12%

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 13 254 13594 70.25 900 879 181.0
A 3 137 9484 47.54 900 879 181.0
A 0 226 7606 37.17 900 879 181.0
B 6 159 1994786 11678.4 885 860 170.7
B 4 80 78949 457.37 885 860 170.7
B 0 190 33888 193.44 885 860 170.7
C 14 238 138367 686.44 856 859 200.3
C 10 22 51342 252.01 856 859 200.3
C 3 233 18484 87.98 856 859 200.3
D 12 218 634773 3100.17 861 833 204.5
D 8 195 342757 1672.12 861 833 204.5
D 2 250 61509 296.73 861 833 204.5

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