ASTROSAT CZTI

Data Quality Report

Orbit 26801

Creation date: 2024-06-27T19:33:06.792659
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/AS1A09_079T01_9000003864_26801cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26801cztM0_level2_quad_clean.evt
Size (bytes)1,048,129,920230,958,720
Size999.6 MB 220.3 MB
Events in quadrant A7,535,4091,527,463
Events in quadrant B6,645,9581,562,218
Events in quadrant C6,614,1941,516,782
Events in quadrant D10,040,5021,462,183

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311500
B0283430
C0281580
D0388920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A134171471.095625%
B134171861.386301%
C134171861.386301%
D1341710347.706641%

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 15317 13420 3 3 0.02% 0.02%
B 15317 13420 33 33 0.22% 0.25%
C 15317 13420 24 24 0.16% 0.18%
D 15317 13420 851 851 5.56% 6.34%

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 13 1321163 4077.27 1610 1572 323.6
A 13 254 22276 63.97 1610 1572 323.6
A 3 137 15270 42.32 1610 1572 323.6
B 0 229 156674 515.05 1601 1559 301.2
B 10 246 95548 312.09 1601 1559 301.2
B 3 64 51571 166.06 1601 1559 301.2
C 15 208 281967 774.35 1553 1564 362.1
C 14 238 248006 680.56 1553 1564 362.1
C 2 16 17036 42.73 1553 1564 362.1
D 1 52 2661243 7309.28 1522 1485 363.9
D 7 80 1029824 2825.98 1522 1485 363.9
D 2 250 497220 1362.33 1522 1485 363.9

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