ASTROSAT CZTI

Data Quality Report

Orbit 33968

Creation date: 2024-06-27T20:54:45.974661
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_037T01_9000004858_33968cztM0_level2.evt modeM0/AS1A11_037T01_9000004858_33968cztM0_level2_quad_clean.evt
Size (bytes)689,523,84079,315,200
Size657.6 MB 75.6 MB
Events in quadrant A3,428,439534,054
Events in quadrant B4,160,948526,712
Events in quadrant C3,264,018521,383
Events in quadrant D9,640,115416,831

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141613
B0161482
C0128982
D0325782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57471402.436054%
B57474948.595789%
C5747731.270228%
D5747234240.751697%

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 8852 5749 120 120 1.36% 2.09%
B 8852 5749 317 317 3.58% 5.51%
C 8852 5749 56 56 0.63% 0.97%
D 8852 5749 2235 2235 25.25% 38.88%

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 813919 6051.82 669 657 134.4
A 13 6 14179 100.62 669 657 134.4
A 10 83 14140 100.33 669 657 134.4
B 5 172 1440588 11564.62 647 631 124.5
B 0 190 62476 496.69 647 631 124.5
B 4 232 25135 196.8 647 631 124.5
C 15 214 249616 1627.04 659 665 153.0
C 3 233 239226 1559.13 659 665 153.0
C 0 10 159437 1037.67 659 665 153.0
D 12 33 5284367 38312.77 545 529 137.9
D 8 195 727778 5273.24 545 529 137.9
D 12 6 550384 3986.96 545 529 137.9

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