ASTROSAT CZTI

Data Quality Report

Orbit 33319

Creation date: 2024-06-27T20:47:30.765561
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_071T01_9000004782_33319cztM0_level2.evt modeM0/AS1T04_071T01_9000004782_33319cztM0_level2_quad_clean.evt
Size (bytes)595,825,92062,078,400
Size568.2 MB 59.2 MB
Events in quadrant A3,115,079398,916
Events in quadrant B4,914,609357,616
Events in quadrant C5,648,312374,032
Events in quadrant D4,003,745373,110

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125442
B0180891
C0204911
D0158151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53691693.147700%
B536987916.371764%
C536968612.777053%
D53691402.607562%

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 7163 5370 128 128 1.79% 2.38%
B 7163 5370 670 670 9.35% 12.48%
C 7163 5370 596 596 8.32% 11.10%
D 7163 5370 120 120 1.68% 2.23%

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 15 169 548290 4157.56 660 647 131.7
A 13 6 9813 69.59 660 647 131.7
A 13 254 8192 57.28 660 647 131.7
B 5 172 1246718 10536.64 619 604 118.3
B 0 219 620050 5237.79 619 604 118.3
B 5 200 464975 3926.53 619 604 118.3
C 1 23 2384780 16889.27 611 616 141.2
C 10 49 496589 3513.44 611 616 141.2
C 15 214 238604 1685.89 611 616 141.2
D 8 195 942577 6053.78 636 619 155.6
D 2 250 249000 1596.3 636 619 155.6
D 13 249 197369 1264.47 636 619 155.6

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