ASTROSAT CZTI

Data Quality Report

Orbit 20201110_T03_262T01_9000003988_level2

Creation date: 2021-01-07T14:04:29.204394
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_262T01_9000003988cztM0_level2_bc.evt modeM0/AS1T03_262T01_9000003988cztM0_level2_quad_clean.evt
Size (bytes)5,404,083,8402,099,871,360
Size5.0 GB 2.0 GB
Events in quadrant A32,350,56813,653,331
Events in quadrant B36,543,34813,679,368
Events in quadrant C33,402,84413,268,131
Events in quadrant D51,049,98312,625,826

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03156410
B03306910
C03222820
D03820210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030940
B030920
C030940
D030940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15148217491.154593%
B15148227201.795593%
C15148227431.810776%
D15148260073.965488%

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 176131 151463 2 2 0.00% 0.00%
B 176131 151456 69 69 0.04% 0.05%
C 176131 151458 7 7 0.00% 0.00%
D 176131 151428 1055 1055 0.60% 0.70%

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 229192 124.96 8231 8095 1769.4
A 0 13 215507 117.22 8231 8095 1769.4
A 6 16 186130 100.62 8231 8095 1769.4
B 0 230 1252132 806.5 8260 8077 1542.5
B 15 32 997250 641.26 8260 8077 1542.5
B 3 112 881044 565.93 8260 8077 1542.5
C 3 233 1625522 859.19 7988 7963 1882.7
C 8 208 659350 345.99 7988 7963 1882.7
C 15 208 231620 118.8 7988 7963 1882.7
D 1 52 11163291 6103.69 7982 7738 1827.7
D 11 176 2983562 1628.2 7982 7738 1827.7
D 12 2 2058831 1122.24 7982 7738 1827.7

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