ASTROSAT CZTI

Data Quality Report

Orbit 20161216_G06_028T01_9000000890_level2

Creation date: 2025-11-08T14:58:53.075480
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/AS1G06_028T01_9000000890cztM0_level2.fits modeM0/AS1G06_028T01_9000000890cztM0_level2_quad_clean.evt
Size (bytes)323,853,120297,282,240
Size308.9 MB 283.5 MB
Events in quadrant A1,967,7541,754,929
Events in quadrant B1,913,2721,750,666
Events in quadrant C1,941,3501,674,296
Events in quadrant D1,648,4301,485,734

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0699520
B0742910
C0739800
D0922410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06920
B06920
C06920
D06920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A340261650.484923%
B340265081.492976%
C340264281.257862%
D3402610713.147593%

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 41541 34027 0 0 0.00% 0.00%
B 41541 34026 0 0 0.00% 0.00%
C 41541 34026 0 0 0.00% 0.00%
D 41541 34023 0 0 0.00% 0.00%

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 14 188 1996 11.54 510 477 131.6
A 0 29 1952 11.21 510 477 131.6
A 14 204 1755 9.71 510 477 131.6
B 2 9 1606 10.95 502 478 103.0
B 12 226 1337 8.34 502 478 103.0
B 5 128 1291 7.89 502 478 103.0
C 1 81 1562 7.93 512 477 136.8
C 1 80 1524 7.65 512 477 136.8
C 12 241 1394 6.7 512 477 136.8
D 4 246 1364 7.37 469 426 127.2
D 3 14 1260 6.56 469 426 127.2
D 11 82 1209 6.16 469 426 127.2

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