ASTROSAT CZTI

Data Quality Report

Orbit 40565

Creation date: 2024-06-27T22:17:39.524532
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_40565cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40565cztM0_level2_quad_clean.evt
Size (bytes)347,137,92079,551,360
Size331.1 MB 75.9 MB
Events in quadrant A2,870,353613,102
Events in quadrant B2,756,291620,450
Events in quadrant C2,530,519587,491
Events in quadrant D4,263,967205,371

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118273
B0117782
C0110482
D0165872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5456160.293255%
B5456240.439883%
C5456110.201613%
D5456364866.862170%

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 7279 5457 2 2 0.03% 0.04%
B 7279 5457 11 11 0.15% 0.20%
C 7279 5457 7 7 0.10% 0.13%
D 7278 5456 414 414 5.69% 7.59%

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 507231 4184.87 594 581 121.1
A 12 189 33026 267.99 594 581 121.1
A 2 79 22261 179.07 594 581 121.1
B 3 112 188547 1673.5 585 569 112.3
B 4 171 89148 788.59 585 569 112.3
B 15 85 42642 374.56 585 569 112.3
C 15 214 241417 1795.57 576 579 134.1
C 0 10 36227 265.77 576 579 134.1
C 13 61 3965 25.24 576 579 134.1
D 12 227 1691765 18736.23 361 351 90.3
D 12 191 499052 5524.24 361 351 90.3
D 12 79 260777 2884.8 361 351 90.3

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