ASTROSAT CZTI

Data Quality Report

Orbit 40950

Creation date: 2024-06-27T22:22:35.693724
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_052T04_9000005582_40950cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40950cztM0_level2_quad_clean.evt
Size (bytes)308,701,44089,763,840
Size294.4 MB 85.6 MB
Events in quadrant A2,834,560605,658
Events in quadrant B2,352,157613,939
Events in quadrant C2,647,281584,493
Events in quadrant D3,171,264535,873

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117783
B0108502
C0113272
D0132042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A541090.166359%
B541060.110906%
C5410460.850277%
D54101633.012939%

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 7173 5411 1 1 0.01% 0.02%
B 7173 5411 0 0 0.00% 0.00%
C 7173 5411 33 33 0.46% 0.61%
D 7173 5410 137 137 1.91% 2.53%

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 504638 4117.41 596 583 122.4
A 7 3 15518 121.99 596 583 122.4
A 13 254 7571 57.08 596 583 122.4
B 3 112 31827 274.45 587 569 113.9
B 12 111 14461 121.97 587 569 113.9
B 11 111 13526 113.76 587 569 113.9
C 15 214 251359 1867.21 573 576 134.3
C 0 10 139640 1035.4 573 576 134.3
C 12 249 17739 127.79 573 576 134.3
D 13 249 390425 2812.19 572 555 138.6
D 2 249 281382 2025.65 572 555 138.6
D 12 6 88785 636.42 572 555 138.6

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