ASTROSAT CZTI

Data Quality Report

Orbit 14845

Creation date: 2024-06-27T17:00:18.097920
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/AS1C03_005T02_9000002192_14845cztM0_level2.evt modeM0/AS1C03_005T02_9000002192_14845cztM0_level2_quad_clean.evt
Size (bytes)853,453,440189,852,480
Size813.9 MB 181.1 MB
Events in quadrant A5,842,3841,237,146
Events in quadrant B6,251,0271,236,010
Events in quadrant C6,321,5391,227,631
Events in quadrant D6,590,9911,190,824

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257134
B0267033
C0257303
D0283103

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12426380.305810%
B124261160.933526%
C12426310.249477%
D124262221.786577%

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 14192 12430 0 0 0.00% 0.00%
B 14192 12430 26 26 0.18% 0.21%
C 14192 12430 0 0 0.00% 0.00%
D 14192 12430 141 141 0.99% 1.13%

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 12 189 168138 570.93 1448 1414 292.0
A 11 29 86464 291.24 1448 1414 292.0
A 0 226 12625 38.39 1448 1414 292.0
B 3 64 151758 545.19 1446 1409 275.8
B 0 189 106525 381.17 1446 1409 275.8
B 0 229 93573 334.2 1446 1409 275.8
C 3 233 820897 2532.45 1409 1416 323.6
C 13 61 10132 26.94 1409 1416 323.6
C 9 54 5951 14.01 1409 1416 323.6
D 7 254 455757 1359.27 1399 1362 334.3
D 12 110 329358 981.16 1399 1362 334.3
D 10 70 161744 479.76 1399 1362 334.3

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