ASTROSAT CZTI

Data Quality Report

Orbit 33113

Creation date: 2024-06-27T20:44:59.143781
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_008T06_9000004762_33113cztM0_level2.evt modeM0/AS1A11_008T06_9000004762_33113cztM0_level2_quad_clean.evt
Size (bytes)1,702,264,320173,309,760
Size1.6 GB 165.3 MB
Events in quadrant A6,828,1341,128,925
Events in quadrant B9,725,2871,082,597
Events in quadrant C8,822,2681,104,592
Events in quadrant D25,176,824903,825

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0520
C0520
D0520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03040
B03040
C03040
D03040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299663
B0386633
C0360263
D0851193

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14888190.127620%
B148888015.380172%
C148882601.746373%
D14888599440.260613%

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 18917 14891 1 1 0.01% 0.01%
B 18917 14891 494 494 2.61% 3.32%
C 18917 14891 178 178 0.94% 1.20%
D 18917 14891 6284 6284 33.22% 42.20%

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 13 254 27327 73.51 1755 1718 348.4
A 13 6 22290 59.05 1755 1718 348.4
A 3 137 16723 43.07 1755 1718 348.4
B 5 172 2138328 6476.81 1710 1663 329.9
B 5 200 234104 704.59 1710 1663 329.9
B 0 189 194210 583.66 1710 1663 329.9
C 7 221 1019333 2591.41 1695 1709 392.7
C 0 10 487206 1236.33 1695 1709 392.7
C 8 111 302423 765.78 1695 1709 392.7
D 7 223 13391498 37132.03 1510 1476 360.6
D 8 195 2355141 6526.98 1510 1476 360.6
D 2 249 862479 2387.66 1510 1476 360.6

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