ASTROSAT CZTI

Data Quality Report

Orbit 40730

Creation date: 2024-06-27T22:19:43.241576
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/AS1A12_066T01_9000005562_40730cztM0_level2.fits modeM0/AS1A12_066T01_9000005562_40730cztM0_level2_quad_clean.evt
Size (bytes)502,954,56085,625,280
Size479.7 MB 81.7 MB
Events in quadrant A3,406,214627,117
Events in quadrant B2,804,781633,302
Events in quadrant C8,279,671425,406
Events in quadrant D3,683,298507,556

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135933
B0121952
C0284592
D0146592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57031001.753463%
B5703520.911801%
C5703201435.314747%
D570378913.834824%

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 7256 5704 68 68 0.94% 1.19%
B 7256 5704 31 31 0.43% 0.54%
C 7255 5702 1909 1909 26.31% 33.48%
D 7256 5704 154 154 2.12% 2.70%

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 542202 4123.52 636 622 131.3
A 12 189 245832 1867.0 636 622 131.3
A 6 10 115778 876.78 636 622 131.3
B 0 229 159282 1277.73 631 613 124.2
B 0 190 76296 609.46 631 613 124.2
B 4 171 32427 256.19 631 613 124.2
C 9 187 5979239 48937.65 521 524 122.2
C 15 214 209145 1707.63 521 524 122.2
C 14 254 29111 233.99 521 524 122.2
D 10 34 251132 1719.54 581 564 145.7
D 2 249 202085 1382.95 581 564 145.7
D 1 52 193044 1320.91 581 564 145.7

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