ASTROSAT CZTI

Data Quality Report

Orbit 40582

Creation date: 2024-06-27T22:17:51.978560
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_054T02_9000005550_40582cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40582cztM0_level2_quad_clean.evt
Size (bytes)435,677,76091,719,360
Size415.5 MB 87.5 MB
Events in quadrant A3,209,312643,432
Events in quadrant B6,564,974622,034
Events in quadrant C2,750,851624,248
Events in quadrant D3,142,318474,478

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132523
B0237002
C0120592
D0135532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5906200.338639%
B59065118.652218%
C5906130.220115%
D5906114919.454792%

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 7187 5907 9 9 0.13% 0.15%
B 7187 5907 348 348 4.84% 5.89%
C 7187 5907 9 9 0.13% 0.15%
D 7186 5906 89 89 1.24% 1.51%

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 548820 4221.36 634 620 129.9
A 2 79 81464 622.53 634 620 129.9
A 12 189 70100 535.02 634 620 129.9
B 3 112 3819344 32083.39 617 600 119.0
B 0 190 149571 1251.59 617 600 119.0
B 5 255 76759 639.85 617 600 119.0
C 15 214 256636 1775.53 619 622 144.2
C 0 10 36979 252.15 619 622 144.2
C 14 254 28463 193.09 619 622 144.2
D 12 191 257289 1854.59 557 542 138.4
D 12 227 220579 1589.42 557 542 138.4
D 13 249 166806 1201.0 557 542 138.4

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