ASTROSAT CZTI

Data Quality Report

Orbit 30490

Creation date: 2024-06-27T20:15:57.171434
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_058T04_9000004382_30490cztM0_level2.evt modeM0/AS1A10_058T04_9000004382_30490cztM0_level2_quad_clean.evt
Size (bytes)714,677,76093,735,360
Size681.6 MB 89.4 MB
Events in quadrant A3,737,982635,095
Events in quadrant B5,690,629628,209
Events in quadrant C3,668,787597,935
Events in quadrant D8,049,375464,552

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159262
B0224171
C0156601
D0290341

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7359761.032749%
B7360931.263587%
C73601782.418478%
D7360154320.964674%

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 7361 38 38 0.49% 0.52%
B 7750 7362 11 11 0.14% 0.15%
C 7750 7362 39 39 0.50% 0.53%
D 7750 7362 1292 1292 16.67% 17.55%

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 0 13 329700 1853.85 874 857 177.4
A 8 192 19949 107.63 874 857 177.4
A 13 254 14802 78.61 874 857 177.4
B 6 159 2112673 12794.83 865 845 165.1
B 0 229 69235 414.35 865 845 165.1
B 5 172 37502 222.09 865 845 165.1
C 14 238 157894 806.17 826 831 194.8
C 10 22 153576 784.01 826 831 194.8
C 3 233 89892 457.13 826 831 194.8
D 12 218 4307887 24731.72 726 707 174.2
D 8 195 404813 2320.37 726 707 174.2
D 12 250 114803 655.14 726 707 174.2

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