ASTROSAT CZTI

Data Quality Report

Orbit 20170507_A03_052T01_9000001208_level2

Creation date: 2021-08-26T23:12:37.761510
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/AS1A03_052T01_9000001208cztM0_level2_bc.evt modeM0/AS1A03_052T01_9000001208cztM0_level2_quad_clean.evt
Size (bytes)1,825,009,920689,448,960
Size1.7 GB 657.5 MB
Events in quadrant A11,936,4604,202,937
Events in quadrant B12,367,1974,329,420
Events in quadrant C11,273,4494,335,723
Events in quadrant D15,806,5464,107,698

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0970
D0980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011640
B011620
C011610
D011690

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01194610
B01223220
C01176360
D01334920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A568818731.534783%
B5688312322.165849%
C569955450.956224%
D5687516002.813187%

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 74209 57960 22 22 0.03% 0.04%
B 74209 57929 49 49 0.07% 0.08%
C 74209 58033 1 1 0.00% 0.00%
D 74206 57921 219 219 0.30% 0.38%

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 598558 970.36 2809 2746 614.0
A 0 254 160461 256.86 2809 2746 614.0
A 15 236 151794 242.74 2809 2746 614.0
B 10 16 893502 1637.59 2867 2784 543.9
B 4 173 123117 221.23 2867 2784 543.9
B 5 255 76756 136.0 2867 2784 543.9
C 14 234 58648 88.75 2837 2793 629.3
C 12 4 30817 44.53 2837 2793 629.3
C 8 222 25727 36.44 2837 2793 629.3
D 1 52 2928791 4332.26 2766 2678 675.4
D 7 71 998962 1475.05 2766 2678 675.4
D 9 64 273630 401.16 2766 2678 675.4

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