ASTROSAT CZTI

Data Quality Report

Orbit 27479

Creation date: 2024-06-27T19:40:30.186443
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/AS1T03_249T01_9000003934_27479cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27479cztM0_level2_quad_clean.evt
Size (bytes)539,527,68077,221,440
Size514.5 MB 73.6 MB
Events in quadrant A3,556,498468,735
Events in quadrant B3,766,667464,650
Events in quadrant C3,572,954446,805
Events in quadrant D4,941,620443,263

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152200
B0157040
C0152360
D0195720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7394951.284826%
B73951271.717377%
C73951321.784990%
D73952072.799189%

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 7749 7394 0 0 0.00% 0.00%
B 7750 7395 22 22 0.28% 0.30%
C 7750 7395 1 1 0.01% 0.01%
D 7750 7395 120 120 1.55% 1.62%

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 11927 59.07 920 900 186.7
A 3 137 8910 42.91 920 900 186.7
A 0 226 7962 37.83 920 900 186.7
B 3 64 142603 803.13 905 884 176.5
B 0 230 28166 154.61 905 884 176.5
B 12 111 22068 120.05 905 884 176.5
C 14 238 140693 672.35 877 882 207.9
C 2 16 8736 37.77 877 882 207.9
C 10 22 6667 27.82 877 882 207.9
D 1 52 1286027 6005.92 887 861 214.0
D 14 35 111049 514.94 887 861 214.0
D 2 250 110028 510.16 887 861 214.0

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