ASTROSAT CZTI

Data Quality Report

Orbit 46787

Creation date: 2024-06-27T23:27:38.186108
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/AS1A13_053T01_9000006266_46787cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46787cztM0_level2_quad_clean.evt
Size (bytes)1,008,129,600200,917,440
Size961.4 MB 191.6 MB
Events in quadrant A12,080,9461,321,918
Events in quadrant B7,804,3361,366,445
Events in quadrant C5,832,3931,339,349
Events in quadrant D10,582,6971,145,697

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0432532
B0319312
C0274022
D0405522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131605253.989362%
B131603162.401216%
C131611811.375275%
D1316112729.664919%

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 13955 13160 130 130 0.93% 0.99%
B 13955 13161 47 47 0.34% 0.36%
C 13956 13161 41 41 0.29% 0.31%
D 13956 13161 1075 1075 7.70% 8.17%

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 6079551 20727.33 1417 1384 293.2
A 13 248 467770 1590.44 1417 1384 293.2
A 13 254 20807 66.23 1417 1384 293.2
B 3 112 1930421 6875.83 1415 1369 280.6
B 5 172 74662 261.24 1415 1369 280.6
B 0 198 41756 143.95 1415 1369 280.6
C 14 254 237220 715.92 1409 1416 329.4
C 1 241 54966 162.58 1409 1416 329.4
C 3 233 33011 95.92 1409 1416 329.4
D 13 249 2035962 5935.82 1367 1321 342.8
D 1 52 1244172 3625.87 1367 1321 342.8
D 2 37 703112 2047.39 1367 1321 342.8

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