ASTROSAT CZTI

Data Quality Report

Orbit 20170831_G07_046T01_9000001506_level2

Creation date: 2021-08-27T19:06:47.793314
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/AS1G07_046T01_9000001506cztM0_level2_bc.evt modeM0/AS1G07_046T01_9000001506cztM0_level2_quad_clean.evt
Size (bytes)1,577,856,960476,786,880
Size1.5 GB 454.7 MB
Events in quadrant A9,222,9572,929,891
Events in quadrant B11,950,3283,214,279
Events in quadrant C7,830,6592,959,814
Events in quadrant D16,223,7382,761,995

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08310
B08340
C07180
D07180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0869730
B0980080
C0832990
D01079930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A400078752.187117%
B3955219574.947917%
C402255631.399627%
D4053314343.537858%

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 46316 41386 3 3 0.01% 0.01%
B 46316 40965 115 115 0.25% 0.28%
C 46315 41523 2 2 0.00% 0.00%
D 46316 41467 181 181 0.39% 0.44%

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 13 251 1525753 3514.45 1961 1917 433.6
A 1 162 51420 114.17 1961 1917 433.6
A 13 253 35940 78.47 1961 1917 433.6
B 4 239 2902260 8089.61 2042 1982 358.5
B 10 245 794983 2211.88 2042 1982 358.5
B 11 51 130151 357.5 2042 1982 358.5
C 14 234 143921 328.45 1953 1924 432.3
C 8 128 12618 24.74 1953 1924 432.3
C 13 61 12060 23.45 1953 1924 432.3
D 8 195 3431200 7578.71 1945 1870 452.5
D 1 20 1869969 4128.44 1945 1870 452.5
D 1 52 1494654 3299.01 1945 1870 452.5

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