ASTROSAT CZTI

Data Quality Report

Orbit 20730

Creation date: 2024-06-27T18:18:54.794573
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/AS1A06_002T02_9000003064_20730cztM0_level2.evt modeM0/AS1A06_002T02_9000003064_20730cztM0_level2_quad_clean.evt
Size (bytes)272,502,72050,025,600
Size259.9 MB 47.7 MB
Events in quadrant A1,791,277325,881
Events in quadrant B1,803,934327,330
Events in quadrant C1,819,465304,390
Events in quadrant D2,590,572300,808

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075745
B075701
C075521
D0101098

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3611681.883135%
B3613812.241904%
C3613912.518683%
D36121534.235880%

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 4493 3614 4 4 0.09% 0.11%
B 4493 3614 0 0 0.00% 0.00%
C 4493 3614 0 0 0.00% 0.00%
D 4493 3614 94 94 2.09% 2.60%

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 6 240 22501 235.86 459 450 93.5
A 0 226 3963 37.58 459 450 93.5
A 3 137 3816 36.0 459 450 93.5
B 12 111 10723 115.82 455 444 88.8
B 11 111 9335 100.18 455 444 88.8
B 14 111 8222 87.64 455 444 88.8
C 14 238 67526 658.75 432 435 101.8
C 7 247 54212 528.02 432 435 101.8
C 3 233 10011 94.02 432 435 101.8
D 1 52 564319 5297.48 439 427 106.4
D 1 20 162466 1522.27 439 427 106.4
D 2 165 96359 901.23 439 427 106.4

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