ASTROSAT CZTI

Data Quality Report

Orbit 40315

Creation date: 2024-06-27T22:14:51.163891
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_056T02_9000005538_40315cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40315cztM0_level2_quad_clean.evt
Size (bytes)400,112,64098,095,680
Size381.6 MB 93.6 MB
Events in quadrant A3,644,003684,288
Events in quadrant B2,850,812707,458
Events in quadrant C4,367,415614,679
Events in quadrant D3,551,419605,523

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142143
B0115622
C0160712
D0140172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51121042.034429%
B5112130.254304%
C51124829.428795%
D51121352.640845%

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 7145 5113 67 67 0.94% 1.31%
B 7145 5113 4 4 0.06% 0.08%
C 7145 5113 458 458 6.41% 8.96%
D 7145 5113 124 124 1.74% 2.43%

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 469997 3704.47 630 621 126.7
A 13 248 395681 3117.94 630 621 126.7
A 6 10 278097 2189.93 630 621 126.7
B 0 229 252661 2128.88 630 615 118.4
B 0 230 59190 494.75 630 615 118.4
B 0 218 24910 205.21 630 615 118.4
C 9 187 1455569 10645.66 593 599 136.7
C 14 254 349246 2550.97 593 599 136.7
C 15 214 213412 1557.1 593 599 136.7
D 12 227 550021 3701.85 605 589 148.4
D 12 79 187919 1262.15 605 589 148.4
D 12 233 176583 1185.78 605 589 148.4

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