ASTROSAT CZTI

Data Quality Report

Orbit 38468

Creation date: 2024-06-27T21:53:10.729591
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_018T01_9000005386_38468cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38468cztM0_level2_quad_clean.evt
Size (bytes)319,832,64088,254,720
Size305.0 MB 84.2 MB
Events in quadrant A2,759,667593,132
Events in quadrant B2,782,906598,878
Events in quadrant C2,564,022578,678
Events in quadrant D3,316,635527,561

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115393
B0119662
C0110212
D0135622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5337170.318531%
B5337731.367810%
C5337170.318531%
D53371282.398351%

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 6620 5338 9 9 0.14% 0.17%
B 6620 5338 43 43 0.65% 0.81%
C 6620 5338 14 14 0.21% 0.26%
D 6620 5337 89 89 1.34% 1.67%

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 388367 3181.03 594 581 121.9
A 13 6 44606 361.14 594 581 121.9
A 9 143 25947 208.08 594 581 121.9
B 5 184 190309 1668.5 588 571 113.7
B 4 171 114718 1003.77 588 571 113.7
B 5 200 70285 613.04 588 571 113.7
C 15 214 222963 1633.63 580 583 136.1
C 14 254 32544 234.79 580 583 136.1
C 0 10 26495 190.35 580 583 136.1
D 2 250 268280 1926.22 573 557 139.0
D 13 200 148970 1067.8 573 557 139.0
D 2 16 134772 965.65 573 557 139.0

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