ASTROSAT CZTI

Data Quality Report

Orbit 20170709_G07_028T01_9000001370_level2

Creation date: 2025-11-15T09:36:11.796838
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/AS1G07_028T01_9000001370cztM0_level2.fits modeM0/AS1G07_028T01_9000001370cztM0_level2_quad_clean.evt
Size (bytes)149,425,920131,595,840
Size142.5 MB 125.5 MB
Events in quadrant A972,536826,613
Events in quadrant B937,228823,577
Events in quadrant C678,258508,641
Events in quadrant D830,596721,759

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0110
C0130
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0362400
B0362790
C0255410
D0390010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03540
B03600
C03440
D03520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172535102.956008%
B172075873.411402%
C120654493.721508%
D171025002.923635%

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 21655 19231 0 0 0.00% 0.00%
B 21655 19145 0 0 0.00% 0.00%
C 15493 13622 0 0 0.00% 0.00%
D 21655 19039 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 29 944 10.64 252 234 66.7
A 14 188 940 10.58 252 234 66.7
A 14 204 831 8.95 252 234 66.7
B 2 9 833 11.49 246 233 52.2
B 2 8 630 7.6 246 233 52.2
B 3 17 621 7.43 246 233 52.2
C 12 241 536 7.56 179 166 49.0
C 2 191 488 6.58 179 166 49.0
C 9 188 459 5.98 179 166 49.0
D 3 14 616 6.09 236 214 66.0
D 6 231 601 5.86 236 214 66.0
D 6 38 600 5.85 236 214 66.0

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