ASTROSAT CZTI

Data Quality Report

Orbit 34208

Creation date: 2022-01-25T11:52:36.433077
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_086T01_9000004884_34208cztM0_level2.evt modeM0/AS1T04_086T01_9000004884_34208cztM0_level2_quad_clean.evt
Size (bytes)724,452,48070,341,120
Size690.9 MB 67.1 MB
Events in quadrant A2,534,935477,316
Events in quadrant B8,982,240370,495
Events in quadrant C2,923,705490,543
Events in quadrant D7,146,674423,968

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108813
B0302812
C0116742
D0248492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5232200.382263%
B5232240345.928899%
C5232991.892202%
D523295618.272171%

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 7054 5233 17 17 0.24% 0.32%
B 7054 5233 2055 2055 29.13% 39.27%
C 7054 5233 68 68 0.96% 1.30%
D 7054 5233 901 901 12.77% 17.22%

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 81169 650.2 614 604 123.9
A 9 143 31647 250.53 614 604 123.9
A 10 83 22789 179.04 614 604 123.9
B 5 31 4532352 46082.56 518 506 98.3
B 5 15 1822469 18526.82 518 506 98.3
B 5 172 285091 2893.83 518 506 98.3
C 0 10 259868 1885.83 598 603 137.5
C 15 214 243298 1765.31 598 603 137.5
C 4 254 51686 371.57 598 603 137.5
D 12 217 2266738 16376.18 565 549 138.4
D 8 195 1216122 8784.1 565 549 138.4
D 2 250 957072 6912.13 565 549 138.4

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