ASTROSAT CZTI

Data Quality Report

Orbit 36091

Creation date: 2022-08-10T08:37:10.065845
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/AS1T04_069T01_9000005158_36091cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36091cztM0_level2_quad_clean.evt
Size (bytes)467,000,64076,078,080
Size445.4 MB 72.6 MB
Events in quadrant A2,702,051491,422
Events in quadrant B2,797,399494,874
Events in quadrant C3,204,564480,259
Events in quadrant D5,059,086445,300

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115253
B0117432
C0129372
D0188932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A560290.160657%
B5602250.446269%
C5602801.428061%
D56023215.730096%

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 7155 5603 2 2 0.03% 0.04%
B 7155 5603 12 12 0.17% 0.21%
C 7155 5603 60 60 0.84% 1.07%
D 7155 5603 330 330 4.61% 5.89%

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 180324 1377.23 644 632 130.5
A 9 143 14936 109.63 644 632 130.5
A 13 6 14740 108.13 644 632 130.5
B 5 172 111026 885.27 639 623 124.7
B 0 190 60381 479.17 639 623 124.7
B 0 213 31070 244.14 639 623 124.7
C 15 214 236581 1619.34 619 623 145.7
C 0 207 236367 1617.87 619 623 145.7
C 0 10 174723 1194.82 619 623 145.7
D 1 52 1063131 7088.94 611 594 149.9
D 12 227 692786 4618.1 611 594 149.9
D 12 6 298040 1984.47 611 594 149.9

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