ASTROSAT CZTI

Data Quality Report

Orbit 37767

Creation date: 2024-06-27T21:44:10.564253
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/AS1A11_106T02_9000005344_37767cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37767cztM0_level2_quad_clean.evt
Size (bytes)553,029,12060,618,240
Size527.4 MB 57.8 MB
Events in quadrant A3,094,598378,134
Events in quadrant B3,290,504373,212
Events in quadrant C2,808,428380,755
Events in quadrant D7,201,911336,958

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123064
B0131322
C0110862
D0250962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5229370.707592%
B52291112.122777%
C5229170.325110%
D522979215.146299%

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 7353 5231 30 30 0.41% 0.57%
B 7353 5231 87 87 1.18% 1.66%
C 7353 5231 18 18 0.24% 0.34%
D 7353 5231 904 904 12.29% 17.28%

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 10 83 349798 2644.78 663 652 132.0
A 9 143 117171 882.63 663 652 132.0
A 6 10 34080 253.22 663 652 132.0
B 4 81 198091 1675.06 644 630 117.9
B 5 255 141137 1191.92 644 630 117.9
B 0 189 102227 861.84 644 630 117.9
C 15 214 226334 1531.92 641 647 147.3
C 0 10 68390 459.83 641 647 147.3
C 14 254 4369 25.26 641 647 147.3
D 12 235 1496134 9957.58 621 603 150.2
D 7 223 1194764 7950.99 621 603 150.2
D 2 249 911961 6068.03 621 603 150.2

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