ASTROSAT CZTI

Data Quality Report

Orbit 34235

Creation date: 2022-07-18T13:14:03.124095
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_059T09_9000004888_34235cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34235cztM0_level2_quad_clean.evt
Size (bytes)439,934,40097,151,040
Size419.6 MB 92.7 MB
Events in quadrant A2,583,725662,602
Events in quadrant B3,129,785677,802
Events in quadrant C3,267,578644,439
Events in quadrant D4,004,171607,992

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106120
B0123550
C0127190
D0156150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4985200.401204%
B49852004.012036%
C49852194.393180%
D49852865.737212%

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 7109 4986 11 11 0.15% 0.22%
B 7109 4986 131 131 1.84% 2.63%
C 7109 4985 157 157 2.21% 3.15%
D 7109 4986 268 268 3.77% 5.38%

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 129086 1068.95 607 596 120.2
A 9 143 71142 586.89 607 596 120.2
A 10 83 22115 179.02 607 596 120.2
B 5 172 618778 5408.6 603 588 114.3
B 5 255 108187 941.39 603 588 114.3
B 0 189 15949 134.39 603 588 114.3
C 0 10 401368 3022.67 574 581 132.6
C 14 254 336307 2531.99 574 581 132.6
C 15 214 213400 1605.05 574 581 132.6
D 8 195 837621 5932.1 573 558 141.1
D 7 80 559376 3960.23 573 558 141.1
D 12 6 93383 657.83 573 558 141.1

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