ASTROSAT CZTI

Data Quality Report

Orbit 20221202_A12_083T02_9000005404_level2

Creation date: 2022-12-06T13:42:51.523322
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/AS1A12_083T02_9000005404cztM0_level2.fits modeM0/AS1A12_083T02_9000005404cztM0_level2_quad_clean.evt
Size (bytes)283,878,720269,591,040
Size270.7 MB 257.1 MB
Events in quadrant A1,711,7341,583,478
Events in quadrant B1,660,3161,611,046
Events in quadrant C1,689,2281,537,996
Events in quadrant D1,374,0261,270,370

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0701470
B0662190
C0655800
D01044550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06400
B06400
C06400
D06400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310
B01310
C01310
D01310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A314532050.651766%
B314532030.645407%
C314531370.435571%
D31453329510.475948%

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 44451 31453 0 0 0.00% 0.00%
B 44451 31451 0 0 0.00% 0.00%
C 44451 31453 0 0 0.00% 0.00%
D 44451 31434 0 0 0.00% 0.00%

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 7 110 1457 9.05 447 421 114.4
A 9 19 1399 8.55 447 421 114.4
A 0 29 1374 8.33 447 421 114.4
B 2 9 1429 11.69 439 420 86.3
B 3 80 1332 10.57 439 420 86.3
B 5 128 1170 8.69 439 420 86.3
C 1 81 1413 8.6 446 420 115.5
C 3 203 1374 8.26 446 420 115.5
C 1 80 1358 8.12 446 420 115.5
D 10 189 1047 6.55 392 358 105.3
D 10 113 1042 6.5 392 358 105.3
D 1 3 1032 6.4 392 358 105.3

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