ASTROSAT CZTI

Data Quality Report

Orbit 20160617_G05_083T02_9000000498_level2

Creation date: 2025-10-30T22:53:26.937573
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/AS1G05_083T02_9000000498cztM0_level2.fits modeM0/AS1G05_083T02_9000000498cztM0_level2_quad_clean.evt
Size (bytes)228,165,120276,675,840
Size217.6 MB 263.9 MB
Events in quadrant A1,370,1301,763,282
Events in quadrant B1,315,4721,726,707
Events in quadrant C1,227,1581,488,223
Events in quadrant D1,159,8761,566,203

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05400
B05400
C05400
D05400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0576070
B0630120
C0842190
D0590050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A266756842.564199%
B266729233.460558%
C26653420115.761828%
D266746162.309365%

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 27427 26670 0 0 0.00% 0.00%
B 27427 26658 0 0 0.00% 0.00%
C 27427 26606 0 0 0.00% 0.00%
D 27427 26668 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 0 29 1372 11.0 355 331 94.7
A 14 188 1370 10.98 355 331 94.7
A 14 204 1205 9.23 355 331 94.7
B 2 9 1111 10.76 348 332 72.4
B 12 226 992 9.12 348 332 72.4
B 14 254 954 8.59 348 332 72.4
C 1 80 944 7.33 323 298 88.2
C 1 81 918 7.03 323 298 88.2
C 12 241 903 6.86 323 298 88.2
D 3 14 926 6.91 331 300 90.5
D 3 31 910 6.74 331 300 90.5
D 3 30 866 6.25 331 300 90.5

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