ASTROSAT CZTI

Data Quality Report

Orbit 20221119_A12_061T03_9000005390_level2

Creation date: 2022-11-23T17:46:35.906087
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/AS1A12_061T03_9000005390cztM0_level2.fits modeM0/AS1A12_061T03_9000005390cztM0_level2_quad_clean.evt
Size (bytes)1,201,541,7601,163,177,280
Size1.1 GB 1.1 GB
Events in quadrant A7,296,0966,947,331
Events in quadrant B7,000,0266,979,852
Events in quadrant C7,243,7626,710,146
Events in quadrant D5,870,4245,617,816

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026740
B026740
C026740
D026740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04940
B04940
C04940
D04940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02996800
B02969450
C02820490
D04241250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13094514401.099698%
B13094519011.451755%
C1309459020.688839%
D1309451486211.349803%

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 180178 130879 0 0 0.00% 0.00%
B 180178 130938 0 0 0.00% 0.00%
C 180178 130938 0 0 0.00% 0.00%
D 180177 130503 0 0 0.00% 0.00%

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 7 110 6076 9.16 1907 1786 468.1
A 9 19 5945 8.88 1907 1786 468.1
A 0 29 5794 8.56 1907 1786 468.1
B 2 9 6058 11.83 1857 1770 362.3
B 3 80 5447 10.15 1857 1770 362.3
B 2 8 5021 8.97 1857 1770 362.3
C 1 81 5955 8.7 1916 1799 477.8
C 1 80 5833 8.44 1916 1799 477.8
C 3 202 5795 8.36 1916 1799 477.8
D 7 3 4388 6.42 1684 1537 444.0
D 10 189 4309 6.24 1684 1537 444.0
D 10 113 4245 6.1 1684 1537 444.0

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