ASTROSAT CZTI

Data Quality Report

Orbit 26494

Creation date: 2024-06-27T19:29:47.553597
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/AS1C05_017T01_9000003836_26494cztM0_level2.evt modeM0/AS1C05_017T01_9000003836_26494cztM0_level2_quad_clean.evt
Size (bytes)741,833,280115,116,480
Size707.5 MB 109.8 MB
Events in quadrant A3,838,226775,478
Events in quadrant B3,939,940786,877
Events in quadrant C4,097,309750,110
Events in quadrant D10,069,723637,217

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162670
B0164390
C0170650
D0353370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77071231.595952%
B77071782.309589%
C77072192.841573%
D7707184023.874400%

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 7887 7708 0 0 0.00% 0.00%
B 7887 7708 0 0 0.00% 0.00%
C 7887 7708 2 2 0.03% 0.03%
D 7887 7708 1357 1357 17.21% 17.61%

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 13643 62.91 994 975 201.4
A 3 137 9218 40.93 994 975 201.4
A 0 226 8533 37.53 994 975 201.4
B 12 111 22929 114.84 992 969 191.2
B 11 111 20214 100.64 992 969 191.2
B 14 111 17366 85.74 992 969 191.2
C 3 233 169695 742.65 952 961 227.2
C 14 238 150911 659.97 952 961 227.2
C 2 16 65093 282.26 952 961 227.2
D 1 52 4088233 19457.82 868 850 210.1
D 12 233 2218833 10558.62 868 850 210.1
D 7 80 342750 1627.6 868 850 210.1

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