ASTROSAT CZTI

Data Quality Report

Orbit 20170103_G06_164T01_9000000946_level2

Creation date: 2021-08-25T18:53:36.177888
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/AS1G06_164T01_9000000946cztM0_level2_bc.evt modeM0/AS1G06_164T01_9000000946cztM0_level2_quad_clean.evt
Size (bytes)1,065,168,000443,828,160
Size1015.8 MB 423.3 MB
Events in quadrant A6,758,9882,834,334
Events in quadrant B6,816,4972,844,294
Events in quadrant C6,965,4692,766,223
Events in quadrant D9,431,5642,699,454

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0692500
B0694550
C0694050
D0758130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06780
B06780
C06780
D06780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A334714991.490843%
B334715101.523707%
C334683831.144377%
D334725271.574450%

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 39033 33475 0 0 0.00% 0.00%
B 39033 33472 5 5 0.01% 0.01%
C 39033 33473 7 7 0.02% 0.02%
D 39033 33473 31 31 0.08% 0.09%

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 132782 357.83 1672 1641 366.5
A 4 2 73904 197.17 1672 1641 366.5
A 13 248 60020 159.29 1672 1641 366.5
B 15 204 49898 147.9 1682 1633 326.3
B 4 48 45287 133.77 1682 1633 326.3
B 0 228 42074 123.92 1682 1633 326.3
C 9 247 358802 1001.43 1625 1598 356.7
C 9 68 98402 271.39 1625 1598 356.7
C 1 3 57316 156.21 1625 1598 356.7
D 8 195 1237850 3158.55 1648 1582 391.4
D 2 152 749235 1910.18 1648 1582 391.4
D 14 34 325066 826.47 1648 1582 391.4

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