ASTROSAT CZTI

Data Quality Report

Orbit 20170529_G07_029T02_9000001256_level2

Creation date: 2021-08-26T23:48:29.628249
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_029T02_9000001256cztM0_level2_bc.evt modeM0/AS1G07_029T02_9000001256cztM0_level2_quad_clean.evt
Size (bytes)633,513,600194,976,000
Size604.2 MB 185.9 MB
Events in quadrant A6,386,0001,192,922
Events in quadrant B4,018,7791,214,780
Events in quadrant C2,998,0331,202,343
Events in quadrant D4,656,9031,160,975

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03320
C03320
D03300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0448700
B0367230
C0333310
D0376230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A164403942.396594%
B164532391.452623%
C16453460.279584%
D164562201.336898%

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 17677 16525 33 33 0.19% 0.20%
B 17677 16527 10 10 0.06% 0.06%
C 17677 16531 2 2 0.01% 0.01%
D 17677 16530 76 76 0.43% 0.46%

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 8 5 2896209 16796.56 766 748 172.4
A 5 16 246272 1424.28 766 748 172.4
A 3 1 134912 778.28 766 748 172.4
B 4 48 358582 2350.81 775 753 152.2
B 10 16 297028 1946.42 775 753 152.2
B 0 230 98763 643.89 775 753 152.2
C 14 234 24292 136.72 759 746 172.2
C 13 61 4797 23.52 759 746 172.2
C 12 4 2424 9.74 759 746 172.2
D 6 225 987967 5139.56 757 732 192.1
D 1 52 180281 934.74 757 732 192.1
D 2 14 144910 750.59 757 732 192.1

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