ASTROSAT CZTI

Data Quality Report

Orbit 13758

Creation date: 2024-06-27T16:45:41.084873
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/AS1G08_062T01_9000002038_13758cztM0_level2.evt modeM0/AS1G08_062T01_9000002038_13758cztM0_level2_quad_clean.evt
Size (bytes)963,576,000154,166,400
Size918.9 MB 147.0 MB
Events in quadrant A7,953,027938,907
Events in quadrant B6,800,331922,506
Events in quadrant C6,229,217975,709
Events in quadrant D7,323,924936,909

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318064
B0282933
C0264273
D0299503

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129533532.725237%
B129532031.567205%
C12953850.656219%
D129532191.690728%

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 14124 12955 160 160 1.13% 1.24%
B 14124 12956 27 27 0.19% 0.21%
C 14124 12956 1 1 0.01% 0.01%
D 14124 12956 126 126 0.89% 0.97%

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 0 23 1105610 3460.68 1569 1537 319.0
A 9 143 545728 1705.75 1569 1537 319.0
A 15 69 96696 298.27 1569 1537 319.0
B 0 219 264267 878.75 1566 1525 299.0
B 4 173 242785 806.9 1566 1525 299.0
B 4 80 48113 155.81 1566 1525 299.0
C 3 233 184341 508.14 1544 1553 359.7
C 8 128 11344 27.22 1544 1553 359.7
C 13 61 11169 26.73 1544 1553 359.7
D 1 52 778818 1899.39 1521 1492 409.3
D 8 195 251106 609.93 1521 1492 409.3
D 5 222 227707 552.75 1521 1492 409.3

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