ASTROSAT CZTI

Data Quality Report

Orbit 40652

Creation date: 2024-06-27T22:18:44.232191
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_029T01_9000005556_40652cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40652cztM0_level2_quad_clean.evt
Size (bytes)307,480,32085,775,040
Size293.2 MB 81.8 MB
Events in quadrant A2,762,169586,387
Events in quadrant B3,014,310598,951
Events in quadrant C2,575,710564,950
Events in quadrant D2,613,996474,382

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113483
B0125032
C0109342
D0113252

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5323110.206650%
B5323971.822281%
C5323240.450874%
D532356610.633102%

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 7086 5324 4 4 0.06% 0.08%
B 7086 5324 64 64 0.90% 1.20%
C 7086 5324 18 18 0.25% 0.34%
D 7086 5324 25 25 0.35% 0.47%

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 468267 3847.15 591 581 121.6
A 3 137 6639 49.83 591 581 121.6
A 13 254 5949 44.16 591 581 121.6
B 0 229 407711 3550.22 584 568 114.7
B 0 190 300224 2612.95 584 568 114.7
B 12 111 14655 122.84 584 568 114.7
C 15 214 237484 1767.59 574 576 134.0
C 10 20 43281 318.62 574 576 134.0
C 14 254 38495 282.91 574 576 134.0
D 12 191 188602 1405.38 541 525 133.8
D 12 227 103894 772.41 541 525 133.8
D 2 250 83865 622.74 541 525 133.8

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